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Hire Dr. Deon V.

South Africa

USD 50 /hr

Freelance science editor with 25+ years experience in research and publishing.

Profile Summary

Professor in chemistry with more than 150 peer-reviewed articles in scientific journals. Currently doing research in catalysis, chemotherapy, photodynamic therapy, kinetics and even a little bit of analytical chemistry.

Subject Matter Expertise

• ★ Chemistry
• ☆ STEM
• ☆ Catalysis
• ☆ Inorganic Chemistry
• ☆ Food Chemistry
• ☆ Medicine
• ☆ Formulation

Services

• Writing
• Research
• Consulting
• Product Development

Writing Technical Writing, Newswriting

Research Market Research, Feasibility Study, Fact Checking, Gray Literature Search, Systematic Literature Review

Consulting Scientific and Technical Consulting

Product Development Manufacturing, Concept Development

Work Experience

Professor

University of the Free State

January 1991 - Present

Education

PhD

University of the Free State

January 1995 - January 2000

Certifications

• Certification details not provided.

Publications

JOURNAL ARTICLE

Orbett T. Alexander, Robin E. Kroon, Alice Brink, Hendrik G. Visser(2019). Symmetry correlations between crystallographic and photoluminescence study of ternary $\upbeta$-diketone europium(iii) based complexes using 1,10-phenanthroline as the ancillary ligand . Dalton Transactions. 48. (42). p. 16074--16082. Royal Society of Chemistry ({RSC})

Marietjie Schutte-Smith, Andreas Roodt, Hendrik G. Visser(2019). Ambient and high-pressure kinetic investigation of methanol substitution in fac-[Re(Trop)({CO})3({MeOH})] by different monodentate nucleophiles . Dalton Transactions. 48. (27). p. 9984--9997. Royal Society of Chemistry ({RSC})

Manicum, A.-L.E., Schutte-Smith, M., Alexander, O.T., Twigge, L., Roodt, A., Visser, H.G.(2019). First kinetic data of the CO substitution in fac-[Re(L,L′-Bid)(CO)<inf>3</inf>(X)] complexes (L,L′-Bid = acacetylacetonate or tropolonate) by tertiary phosphines PTA and PPh<inf>3</inf>: Synthesis and crystal structures of water-soluble rhenium(I) tri- and dicarbonyl complexes with 1,3,5-triaza-7-phosphaadamantane (PTA) . Inorganic Chemistry Communications. 101. p. 93-98.

Brink, A., Kroon, R.E., Visser, H.G., Van Rensburg, C.E.J., Roodt, A.(2018). Designing model imino bifunctional chelators for radiopharmaceuticals- in vitro antitumor activity, photoluminescence and structural analysis . New Journal of Chemistry. 42. (7). p. 5193-5203.

Mokolokolo, P.P., Frei, A., Tsosane, M.S., Kama, D.V., Schutte-Smith, M., Brink, A., Visser, H.G., Meola, G., Alberto, R., Roodt, A.(2018). Nuclearity manipulation in Schiff-base fac-tricarbonyl complexes of Mn(I) and Re(I) . Inorganica Chimica Acta. 471. p. 249-256.

Manicum, A.-L., Alexander, O., Schutte-Smith, M., Visser, H.G.(2018). Crystal structure of fac-(acetylacetonato-κ²O,O′)tricarbonyl(tri-m-tolyl phosphane-κP)rhenium(I), C<inf>29</inf>H<inf>28</inf>O<inf>5</inf>PRe . Zeitschrift fur Kristallographie - New Crystal Structures. 233. (1). p. 23-25.

Alexander, O.T., Donka, R., Tonder, J.H.V., Bezuidenhoudt, B.C.B., Visser, H.G.(2018). The crystal structure of 6-(4-bromobenzyl)-1,3,5-trimethyl-7-phenyl-1,5-dihydro-2H-pyrrolo[3,2-d]pyrimidine-2,4(3H)-dione, C<inf>22</inf>H<inf>20</inf>BrN<inf>3</inf>O<inf>2</inf> . Zeitschrift fur Kristallographie - New Crystal Structures. 233. (3). p. 395-397.

Nkoe, P.I., Visser, H.G., Swart, C., Brinka, A., Schutte-Smith, M.(2018). Synthesis of re¹tricarbonyl complexes with various sulfur-and oxygen-donating ligands: Crystal structures of two re¹dinuclear structures bridged by S atoms . Acta Crystallographica Section C: Structural Chemistry. 74. (10). p. 1116-1122.

Manicum, A.-L.E., Schutte-Smith, M., Visser, H.G.(2018). The synthesis and structural comparison of fac-[Re(CO)<inf>3</inf>]⁺containing complexes with altered β-diketone and phosphine ligands . Polyhedron. 145. p. 80-87.

Alexander, O.T., Duvenhage, M.M., Brink, A., Swart, H.C., M&#252;ller, P., Kroon, R.E., Visser, H.G.(2017). Synthesis, structures and luminescence properties of two gallium(III) complexes with 5,7-dimethyl-8-hydroxyquinoline . Journal of Coordination Chemistry. 70. (8). p. 1316-1326.

Manicum, A.-L., Alexander, O., Schutte-Smith, M., Visser, H.G., Roodt, A.(2017). Crystal structure of fac-(acetylacetonato-κ²O,O')tricarbonyl(benzyldiphenylphosphine-κP)rhenium(I), C<inf>27</inf>H<inf>24</inf>O<inf>5</inf>PRe . Zeitschrift fur Kristallographie - New Crystal Structures. 232. (6). p. 957-959.

Manicum, A.-L., Schutte-Smith, M., Visser, H.G.(2017). Crystal structure of fac-(acetylacetonato-κ²O,O')tricarbonyl(tri(p-tolyl)phosphine-κP)rhenium(I), C<inf>29</inf>H<inf>28</inf>O<inf>5</inf>PRe . Zeitschrift fur Kristallographie - New Crystal Structures. 232. (6). p. 951-955.

Dutta, S., Som, S., Kunti, A.K., Kumar, V., Sharma, S.K., Swart, H.C., Visser, H.G.(2017). Structural and luminescence responses of CaMoO<inf>4</inf> nano phosphors synthesized by hydrothermal route to swift heavy ion irradiation: Elemental and spectral stability . Acta Materialia. 124. p. 109-119.

Malaza, S., Govender, P., Schutte-Smith, M., Visser, H.G., Smith, G.S.(2017). Synthesis and Substitution Kinetics of Tricarbonylrhenium(I) Dendritic Complexes . European Journal of Inorganic Chemistry. 2017. (33). p. 3919-3927.

Som, S., Das, S., Dutta, S., Pandey, M.K., Dubey, R.K., Visser, H.G., Sharma, S.K., Lochab, S.P.(2016). A comparative study on the influence of 150 MeV Ni⁷⁺, 120 MeV Ag⁹⁺, and 110 MeV Au⁸⁺swift heavy ions on the structural and thermoluminescence properties of Y<inf>2</inf>O<inf>3</inf>: Eu³⁺/Tb³⁺nanophosphor for dosimetric applications . Journal of Materials Science. 51. (3). p. 1278-1291.

Dutta, S., Som, S., Kunti, A.K., Sharma, S.K., Kumar, V., Swart, H.C., Visser, H.G.(2016). Ag⁷⁺ion induced modification of morphology, optical and luminescence behaviour of charge compensated CaMoO<inf>4</inf>nanophosphor . Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms. 384. p. 76-85.

Tsosane, M.S., Visser, H.G., Brink, A.(2016). Crystal structure of (E)-2-(((1,10-phenanthrolin-5-yl)imino)methyl)-5-methylphenol monohydrate, C<inf>20</inf>H<inf>15</inf>N<inf>3</inf>O·H<inf>2</inf>O . Zeitschrift fur Kristallographie - New Crystal Structures. 231. (1). p. 237-239.

Schutte-Smith, M., Visser, H.G., Roodt, A.(2016). Crystal structure of fac-hexacarbonylbisμ<inf>2</inf>-(3-carboxy-3'-carboxylato-2,2'-bipyridine)-κ³N,N':O-dirhenium(I) tetrahydrate, C<inf>30</inf>H<inf>22</inf>N<inf>4</inf>O<inf>18</inf>Re<inf>2</inf> . Zeitschrift fur Kristallographie - New Crystal Structures. 231. (2). p. 335-338.

Schutte-Smith, M., Visser, H.G., Roodt, A.(2016). Crystal structure of tetraethylammonium 3,5-dinitrosalicylate, C<inf>15</inf>H<inf>23</inf>N<inf>3</inf>O<inf>7</inf> . Zeitschrift fur Kristallographie - New Crystal Structures. 231. (1). p. 77-79.

Manicum, A.-L., Schutte-Smith, M., Visser, H.G., Pretorius, C., Roodt, A.(2016). Crystal structure of tetraethylammonium fac-tricarbonyl(hexafluoroacetylacetonato-κ²O,O')-(nitrato-κO)rhenium(I), C<inf>16</inf>H<inf>21</inf>O<inf>8</inf>N<inf>2</inf>F<inf>6</inf>Re . Zeitschrift fur Kristallographie - New Crystal Structures. 231. (1). p. 263-266.

Koen, R., Visser, H.G., Roodt, A.(2016). Crystal structure of tetraethylammonium hexachloridotantalate(V), C<inf>8</inf>H<inf>20</inf>Cl<inf>6</inf>NTa . Zeitschrift fur Kristallographie - New Crystal Structures. 231. (1). p. 227-229.

Mokolokolo, P.P., Brink, A., Visser, H.G.(2016). Crystal structure of bis(μ<inf>2</inf>-2-((3-methylphenyl)imino)methylphenolato-κ²N,O:O)hexacarbonyldimanganese(I), C<inf>34</inf>H<inf>24</inf>Mn<inf>2</inf>N<inf>2</inf>O<inf>8</inf> . Zeitschrift fur Kristallographie - New Crystal Structures. 231. (2). p. 613-615.

Dubey, V., Tiwari, R., Tamrakar, R.K., Kaur, J., Dutta, S., Das, S., Visser, H.G., Som, S.(2016). Estimation of spectroscopic parameters and colour purity of the red-light-emitting YBa<inf>3</inf>B<inf>9</inf>O<inf>18</inf> phosphor: Judd–Ofelt approach . Journal of Luminescence. 180. p. 169-176.

Purcell, W., Visser, H.G.(2016). Evidence of Unusually Long Metal-Aqua Interaction: The Crystal Structure of Tetraphenylphosponium Rhenium(V)aquatetracyanonitrido Monohydrate Tri-terpyridine . Journal of Chemical Crystallography. 46. (1). p. 15-20.

Kama, D.V., Brink, A., Visser, H.G.(2016). Crystal structure of bis(μ<inf>2</inf>-chlorido)-bis(di-p-tolylhydroxyphosphine-κP)-bis(di-p-tolylphosphite-κP)dipalladium(II), C<inf>56</inf>H<inf>58</inf>Cl<inf>2</inf>O<inf>4</inf>P<inf>4</inf>Pd<inf>2</inf> . Zeitschrift fur Kristallographie - New Crystal Structures. 231. (4). p. 1081-1083.

Koen, R., Roodt, A., Visser, H.G.(2016). Exploring differences in various Nb(V)-and Ta(V) tropolonato complexes by a solid-state structural comparison study . Journal of the Southern African Institute of Mining and Metallurgy. 116. (10). p. 895-899.

Dutta, S., Sharma, S.K., Kumar, V., Som, S., Swart, H.C., Visser, H.G.(2016). Ion-induced modification of structural, optical and luminescence behaviour of Gd<inf>2</inf>MoO<inf>6</inf> nanomaterials: A comparative approach . Vacuum. 128. p. 146-157.

Van Tonder, J., Visser, H.G., Koen, R.(2016). The crystal structure of 6-chloro-2,4-diphenylquinoline . Zeitschrift fur Kristallographie - New Crystal Structures. 231. (1). p. 233-235.

Twala, T.N., Schutte-Smith, M., Roodt, A., Visser, H.G.(2015). Activation of the manganese(i) tricarbonyl core by selective variation of bidentate ligands (L,L′-Bid = N,N′ and N,O donor atom sets) in fac-[Mn(CO)<inf>3</inf>(L,L′-Bid)(CH<inf>3</inf>OH)]ⁿcomplexes . Dalton Transactions. 44. (7). p. 3278-3288.

Herbst, L., Visser, H.G., Roodt, A., Steyn, M., Loganathan, N.(2015). Crystal structure of (2-(benzoyl)phenolato-κ² O,O′)-trans-dichlorido-cis-bis(methoxido) niobium(V), C<inf>15</inf>H<inf>15</inf>Cl<inf>2</inf>NbO<inf>4</inf> . Zeitschrift fur Kristallographie - New Crystal Structures. 230. (4). p. 345-347.

Mphure, L.T., Visser, H.G., Roodt, A., Brink, A.(2015). Crystal structure of dichloro-N,N-bis(pyridine-2-ylmethyl)cyclohexamino copper(II), C&lt;inf&gt;18&lt;/inf&gt;H&lt;inf&gt;23&lt;/inf&gt;Cl&lt;inf&gt;2&lt;/inf&gt;CuN&lt;inf&gt;3&lt;/inf&gt; . Zeitschrift fur Kristallographie - New Crystal Structures. 230. (2). p. 156-158.

Manicum, A.-L., Visser, H.G., Engelbrecht, I., Roodt, A.(2015). Crystal structure of fac-(acetylacetonato-κ&lt;sup&gt;2&lt;/sup&gt;O,O')tricarbonyl(cyclohexyldiphenylphosphine-κP) rhenium(I), C&lt;inf&gt;26&lt;/inf&gt;H&lt;inf&gt;28&lt;/inf&gt;O&lt;inf&gt;5&lt;/inf&gt;PRe . Zeitschrift fur Kristallographie - New Crystal Structures. 230. (2). p. 150-152.

Muller, K.A., Venter, J.A., Visser, H.G.(2015). Crystal structure of potassium diaqua dihydroxy(methylenediphosphonato-κ²-O,O′)cobaltate(III), CH<inf>10</inf>CoKO<inf>10</inf>P<inf>2</inf> . Zeitschrift fur Kristallographie - New Crystal Structures. 230. (4). p. 349-351.

Duvenhage, M.-M., Ntwaeaborwa, M., Visser, H.G., Swarts, P.J., Swarts, J.C., Swart, H.C.(2015). Determination of the optical band gap of Alq<inf>3</inf> and its derivatives for the use in two-layer OLEDs . Optical Materials. 42. p. 193-198.

Manicum, A., Schutte-Smith, M., Kemp, G., Visser, H.G.(2015). Illustration of the electronic influence of coordinated β-diketone type ligands: A kinetic and structural study . Polyhedron. 85. p. 190-195.

Koen, R., Roodt, A., Visser, H.(2015). A redetermination of the structure of tetraethylammonium meroxidotrichlorido(thenoyltrifluoroacetyl acetonato-κ²-O, O′)niobate(V) . Journal of the Southern African Institute of Mining and Metallurgy. 115. (10). p. 957-960.

Purcell, W., Visser, H.G.(2015). Rhenium(V)-nitrido complexes with different nitrogen donor bidentate ligands . Transition Metal Chemistry. 40. (8). p. 899-906.

Marake, D.T., Mokolokolo, P.P., Visser, H.G., Brink, A.(2015). Structural comparison of group 7 tricarbonyl complexes of 2-{[2-(1H-imidazol-4-yl)ethyl]iminomethyl}-5-methylphenolate . Acta Crystallographica Section C: Structural Chemistry. 71. p. 423-429.

Som, S., Das, S., Dutta, S., Visser, H.G., Pandey, M.K., Kumar, P., Dubey, R.K., Sharma, S.K.(2015). Synthesis of strong red emitting Y&lt;inf&gt;2&lt;/inf&gt;O&lt;inf&gt;3&lt;/inf&gt;:Eu&lt;sup&gt;3+&lt;/sup&gt; phosphor by potential chemical routes: Comparative investigations on the structural evolutions, photometric properties and Judd-Ofelt analysis . RSC Advances. 5. (87). p. 70887-70898.

Schutte-Smith, M., Visser, H.G.(2015). The versatility of pyridine-2,5-dicarboxylic acid in the synthesis of fac-M(CO)<inf>3</inf> complexes (M = Re, ^99mTc): Reactivity towards substitution reactions and derivatization after coordination to a metal . Polyhedron. 89. p. 122-128.

Steyn, M., Visser, H.G., Roodt, A., Engelbrecht, I.(2014). Crystal structure of mono-μ-oxo-bis[di(5-chloro-7-iodoquinolin-8-olato- κ²N,O)-chloro-(dimethylformamido-κO)zirconium(IV)] dimethylformamide solvate, C<inf>45</inf>H<inf>37</inf>Cl<inf>6</inf>I <inf>4</inf>N<inf>7</inf>O<inf>8</inf>Zr<inf>2</inf> . Zeitschrift fur Kristallographie - New Crystal Structures. 229. (1). p. 67-69.

Brink, A., Visser, H.G., Roodt, A.(2014). Solid state isostructural behavior and quantified limiting substitution kinetics in schiff-base bidentate ligand complexes fac -[Re(O,N -Bid)(CO)<inf>3</inf>(MeOH)]ⁿ . Inorganic Chemistry. 53. (23). p. 12480-12488.

Duvenhage, M.M., Visser, H.G., Ntwaeaborwa, O.M., Swart, H.C.(2014). The effect of electron donating and withdrawing groups on the morphology and optical properties of Alq3 . Physica B: Condensed Matter. 439. p. 46-49.

Steyn, M., Visser, H.G., Roodt, A.(2014). Synthesis and crystal structure of tetrakis(1,3-diphenyl-1,3- propanedionato) zirconium(IV) . Journal of the Southern African Institute of Mining and Metallurgy. 114. (2). p. 183-188.

Herbst, L., Visser, H.G., Roodt, A.(2013). Crystal structure of (benzoylacetonato- 2O,O')dichloridodimethoxido niobium(V), C<inf>12</inf>H<inf>15</inf>Cl<inf>2</inf>NbO<inf>4</inf> . Zeitschrift fur Kristallographie - New Crystal Structures. 228. (4). p. 451-452.

Herbst, L., Visser, H.G., Roodt, A.(2013). Crystal structure of (benzoylacetonato-κ2O,O') dichloridodimethoxidotantalum(V), C12H15Cl 2O4Ta . Zeitschrift fur Kristallographie - New Crystal Structures. 228. (3). p. 397-398.

Steyn, M., Visser, H.G., Roodt, A.(2013). Crystal structure of tetrakis(5,7-dichloroquinolin-8-olato- κ²N,O) zirconium(IV) dimethylformamide disolvate, C <inf>42</inf>H<inf>30</inf>Cl<inf>8</inf>N<inf>6</inf>O<inf>6</inf>Zr . Zeitschrift fur Kristallographie - New Crystal Structures. 228. (3). p. 413-415.

Schutte-Smith, M., Muller, T.J., Visser, H.G., Roodt, A.(2013). Distorted octahedral environments in tricarbonylrhenium(I) complexes of 5-[2-(2,4,6-trimethylphenyl)diazen-1-yl]quinolin-8-olate and 5,7-bis[2-(2-methylphenyl)diazen-1-yl]quinolin-8-olate . Acta Crystallographica Section C: Crystal Structure Communications. 69. (12). p. 1467-1471.

Purcell, W., Conradie, J., Chiweshe, T.T., Venter, J.A., Visser, H.G., Coetzee, M.P.(2013). Characterization of acetylacetonato carbonyl diphenyl-2-pyridylphosphine rhodium(I): Comparison with other carbonyl complexes . Journal of Molecular Structure. 1038. p. 220-229.

Brink, A., Visser, H.G., Roodt, A.(2013). Novel imino rhenium(I) tricarbonyl complexes of salicylidene-derived ligands: Synthesis, X-ray crystallographic studies, spectroscopic characterization and DFT calculations . Polyhedron. 52. p. 416-423.

Duvenhage, M.-M., Swart, H.C., Ntwaeaborwa, O.M., Visser, H.G.(2013). Synthesis, crystal structure, luminescent properties and photo degradation of mer-tris(8-Hydroxy-quinolinato-N, O)-indium(iii) hydrate 0.5 methanol solvate . Optical Materials. 35. (12). p. 2366-2371.

Brink, A., Visser, H.G., Roodt, A.(2013). Activation of rhenium(I) toward substitution in fac -[Re(N,O′ -Bid)(CO)<inf>3</inf>(HOCH<inf>3</inf>)] by Schiff-base bidentate ligands (N,O′ -Bid) . Inorganic Chemistry. 52. (15). p. 8950-8961.

Vijoen, J.A., Visser, H.G., Roodt, A., Engelbrecht, I.(2013). Crys tal struc ture of tetrakis(5,7-dibromoquinolin-8-olato- κ²N,O)- haf nium(IV) dimethylformamide trisolvate, C <inf>45</inf>H<inf>37</inf>Br<inf>8</inf>HfN<inf>7</inf>O<inf>7</inf> . Zeitschrift fur Kristallographie - New Crystal Structures. 228. (4). p. 485-487.

Cloete, N., Visser, H.G., Engelbrecht, I., Overett, M.J., Gabrielli, W.F., Roodt, A.(2013). Ethylene tri- and tetramerization: A steric parameter selectivity switch from X-ray crystallography and computational analysis . Inorganic Chemistry. 52. (5). p. 2268-2270.

Steyn, M., Visser, H.G., Roodt, A.(2013). Evaluation of oxine-type ligand coordination to zirconium (IV) . Journal of the Southern African Institute of Mining and Metallurgy. 113. (2). p. 105-108.

Schutte, M., Visser, H.G., Roodt, A.(2012). 2-(Ammoniomethyl)pyridinium sulfate monohydrate . Acta Crystallographica Section E: Structure Reports Online. 68. (3).

Van Der Berg, P.C.W., Visser, H.G., Roodt, A.(2012). 2-Amino-6-(quinoline-2-carboxamido)-pyridinium nitrate . Acta Crystallographica Section E: Structure Reports Online. 68. (9).

Brink, A., Visser, H.G., Roodt, A.(2012). 4-Fluoro-2-[(3-methyl-phen-yl)imino-meth-yl]phenol . Acta Crystallographica Section E: Structure Reports Online. 68. (4).

Schutte, M., Pretorius, C., Visser, H.G., Roodt, A.(2012). 5-(Trifluoromethoxy)isatin . Acta Crystallographica Section E: Structure Reports Online. 68. (12).

Engelbrecht, I., Visser, H.G., Roodt, A.(2012). Bis[N,N-bis(diphenylphosphanyl)cyclopentanamine-κ2P, P′]platinum(II) bis(trifluoromethanesulfonate) . Acta Crystallographica Section E: Structure Reports Online. 68. (7).

Van Der Berg, P.C.W., Visser, H.G., Roodt, A., Muller, T.J.(2012). N,N′-(4,5-Dimethyl-1,2-phenylene)bis-(pyridine-2-carboxamide) . Acta Crystallographica Section E: Structure Reports Online. 68. (9).

Schutte, M., Visser, H.G., Roodt, A., Braband, H.(2012). N-Benzylisatin . Acta Crystallographica Section E: Structure Reports Online. 68. (3).

Barnard, N.I., Visser, H.G.(2012). Novel synthetic method for cobalt complexes: Structural and kinetic study of [Co(nta)(py)(H<inf>2</inf>O)] . Inorganic Chemistry Communications. 15. p. 40-42.

Schutte, M., Brink, A., Visser, H.G., Roodt, A.(2012). Tetra-μ3-hydroxido-tetrakis[tricarbonylrhenium(I)] pyridine tetrasolvate . Acta Crystallographica Section E: Structure Reports Online. 68. (9).

Steyn, M., Visser, H.G., Roodt, A.(2012). Tetrakis(5,7-dimethylquinolin-8-olato-κ²N,O)zirconium(IV) dimethylformamide disolvate . Acta Crystallographica Section E: Structure Reports Online. 68. (11).

Schutte, M., Roodt, A., Visser, H.G.(2012). Coordinated aqua vs methanol substitution kinetics in fac -Re(I) tricarbonyl tropolonato complexes . Inorganic Chemistry. 51. (21). p. 11996-12006.

Engelbrecht, I., Visser, H.G., Roodt, A.(2012). Tricarbonylbis(triphenylphosphane-κP)iridium(I) hexafluoridophosphate methanol monosolvate . Acta Crystallographica Section E: Structure Reports Online. 68. (9).

Schutte, M., Muller, T.J., Visser, H.G., Roodt, A.(2012). [Bis(pyridin-2-ylmethyl)aminej-k3N,N′,N″] tricarbonylrhenium(I) bromide hemihydrate . Acta Crystallographica Section E: Structure Reports Online. 68. (6).

Herbst, L., Visser, H.G., Roodt, A., Pretorius, C.(2012). (Acetylacetonato-κ²O,O')dichloridobis(methanolato- κO)niobium(V) . Acta Crystallographica Section E: Structure Reports Online. 68. (11).

Schutte, M., Visser, H.G., Roodt, A.(2012). (μ1-Methanolato-κ1 O)-μ1- methoxo-κ1 O-(μ2-2-amino-1-methyl-5H-imidazol-4- one-κ2 N:N')-hexacarbonyldirhenium(I) . Acta Crystallographica Section E: Structure Reports Online. 68. (11).

Brink, A., Visser, H.G., Roodt, A.(2011). Tetraethylammonium dibromidotricarbonyl(o-toluidine)rhenate(I) . Acta Crystallographica Section E: Structure Reports Online. 67. (1).

Koen, R., Roodt, A., Visser, H.G., Muller, T.J.(2011). 1,1,1,5,5,5-Hexafluoro-2,4-dimethoxypentane-2,4-diol . Acta Crystallographica Section E: Structure Reports Online. 67. (12).

Van Der Berg, P.C.W., Visser, H.G., Roodt, A.(2011). 6,6′-(Pyridine-2,6-diyl)bis(pyrrolo[3,4-b]-pyridine-5,7-dione) . Acta Crystallographica Section E: Structure Reports Online. 67. (11).

Muller, T.J., Visser, H.G., Roodt, A.(2011). Acetonitriletrichloridobis(cyclohexyldiphenylphosphane)rhodium(III) acetonitrile disolvate . Acta Crystallographica Section E: Structure Reports Online. 67. (12).

Herbst, L., Visser, H.G., Roodt, A., Muller, T.J.(2011). Cyclo-Tetra -μ- oxido-tetrakis[(acetyl-acetonato-κ² O,O′)bis-(ethanolato-κO)niobium(V)] . Acta Crystallographica Section E: Structure Reports Online. 67. (12).

Viljoen, J.A., Visser, H.G., Roodt, A.(2011). Di-μ-hydroxido-bis-[tris-(4,4,4-trifluoro-1-phenylacetylacetonato- κ2 O,O′)hafnium(IV)] dimethylformamide disolvate . Acta Crystallographica Section E: Structure Reports Online. 67. (12).

Merwe, K.V.D., Visser, H.G., Venter, J.A.(2011). Dicaesium diaquabis-(methylenediphosphonato-k ² O,O′)cobaltate(II) . Acta Crystallographica Section E: Structure Reports Online. 67. (10).

Merwe, K.V.D., Visser, H.G., Venter, J.A.(2011). Disodium diaquabis(methylenediphosphonato-κ ² O,O′)cobaltate(II) dihydrate . Acta Crystallographica Section E: Structure Reports Online. 67. (10).

Visser, H.G., Roodt, A., Volmink, A.-L., Kemp, G.(2011). Fac-Tricarbonyl(pyridine-κN)(1,1,1-trifluoroacetylacetonato- κ2 O,O′)rhenium(I) . Acta Crystallographica Section E: Structure Reports Online. 67. (11).

Engelbrecht, I., Visser, H.G., Roodt, A.(2011). N,N-Bis(diphenylphosphan-yl)cyclobutanamine . Acta Crystallographica Section E: Structure Reports Online. 67. (8).

Roodt, A., Visser, H.G., Brink, A.(2011). Structure/reactivity relationships and mechanism from X-ray data and spectroscopic kinetic analysis . Crystallography Reviews. 17. (4). p. 241-280.

Brink, A., Visser, H.G., Roodt, A.(2011). Synthesis, crystallographic, and theoretical investigation of fac-[Re ^I(salen)(CO)<inf>3</inf>(S)] complexes, salen = monocharged bidentate Schiff-base and S = pyridine, CH<inf>3</inf>OH . Journal of Coordination Chemistry. 64. (1). p. 122-133.

Viljoen, J.A., Visser, H.G., Roodt, A.(2011). Tetra-kis(5,7-dimethylquinolin-8-olato-k ² N,O)hafnium(IV) dimethylformamide disolvate . Acta Crystallographica Section E: Structure Reports Online. 67. (10).

Brink, A., Visser, H.-G., Roodt, A.(2011). Tetraethylammonium (acetylacetonato)-bromidotricarbonylrhenate(I) . Acta Crystallographica Section E: Structure Reports Online. 67. (1).

Steyn, M., Visser, H.G., Roodt, A., Muller, T.J.(2011). Tetrakis(picolinato-κ ² N,O)zirconium(IV) dihydrate . Acta Crystallographica Section E: Structure Reports Online. 67. (9).

Schutte, M., Kemp, G., Visser, H.G., Roodt, A.(2011). Tuning the reactivity in classic low-spin d ⁶ Rhenium(I) Tricarbonyl radiopharmaceutical synthon by selective bidentate ligand variation (L,L′-Bid; L,L′= N,N′, N,O, and O,O′ Donor Atom Sets) in fac-[Re(CO) <inf>3</inf>(L,L′-Bid)(MeOH)] ⁿ Complexes . Inorganic Chemistry. 50. (24). p. 12486-12498.

Herbst, L., Koen, R., Roodt, A., Visser, H.G.(2010). (Acetyl-acetonato-κ² O,O′)chlorido-trimethano- latoniobium(V) . Acta Crystallographica Section E: Structure Reports Online. 66. (7).

Visser, H.G., Clegg, J.K.(2010). Bis(tetra-phenyl-arsonium) di μ- Hy-droxido-bis-[(nitrilo-triacetato)- cobalt(III)] octa-hydrate . Acta Crystallographica Section E: Structure Reports Online. 66. (11).

Engelbrecht, I., Visser, H.G., Roodt, A.(2010). Bis[N,N-bis(diphenylphosphan-yl)cyclohexylamine-κ2 P,P′]platinum(II) bis(hexafluoridophosphate) dichloromethane disolvate . Acta Crystallographica Section E: Structure Reports Online. 66. (8).

Engelbrecht, I., Visser, H.G., Roodt, A.(2010). Bis[N,N-bis-(diphenylphosphanyl)pentylamine-κ² P,P′]platinum(II) bis(hexafluoridophosphate) dichloromethane disolvate . Acta Crystallographica Section E: Structure Reports Online. 66. (8).

Visser, H.G., Venter, J.A., Van Der Merwe, K.A.(2010). Dipotassium diaqua-bis(methyl-enedi-phospho-nato-² O,O')cobaltate(II) . Acta Crystallographica Section E: Structure Reports Online. 66. (2).

Engelbrecht, I., Visser, H.G., Roodt, A.(2010). N,N-Bis(diphenyl-phosphanyl)cyclo-propyl-amine . Acta Crystallographica Section E: Structure Reports Online. 66. (11).

Engelbrecht, I., Visser, H.G., Roodt, A.(2010). N,N-Bis(diphenylphosphanyl)cyclopentanamine . Acta Crystallographica Section E: Structure Reports Online. 66. (12).

Van Der Merwe, K., Visser, H.G., Venter, J.A.(2010). Pyridinium diaquabis(methylenediphosphonato-κ² O,O′)chromate(III) tetra-hydrate . Acta Crystallographica Section E: Structure Reports Online. 66. (8).

Brink, A., Roodt, A., Steyl, G., Visser, H.G.(2010). Steric vs. electronic anomaly observed from iodomethane oxidative addition to tertiary phosphine modified rhodium(i) acetylacetonato complexes following progressive phenyl replacement by cyclohexyl [PR<inf>3</inf>= PPh<inf>3</inf>, PPh<inf>2</inf>Cy, PPhCy<inf>2</inf>and PCy<inf>3</inf>] . Dalton Transactions. 39. (23). p. 5572-5578.

Schutte, M., Visser, H.G., Roodt, A.(2010). Tetra-ethyl-ammonium bromidotricarbonyl(tropolonato)rhenate(I) . Acta Crystallographica Section E: Structure Reports Online. 66. (7).

Viljoen, J.A., Visser, H.G., Roodt, A.(2010). Tetra-kis(8-quinolinolato-κ² N,O)hafnium(IV) dimethylformamide solvate monohydrate . Acta Crystallographica Section E: Structure Reports Online. 66. (5).

Viljoen, J.A., Visser, H.G., Roodt, A.(2010). Tetrakis(1,3-diphenylpropane-1,3-dionato)hafnium(IV) . Acta Crystallographica Section E: Structure Reports Online. 66. (9).

Cloete, N., Visser, H.G., Roodt, A.(2010). [N,N-Bis(diphenylphosphino)propylamine-κ2P,P'] dichloridoplatinum(II) . Acta Crystallographica Section E: Structure Reports Online. 66. (1).

Suthiram, J., Zeevaart, J.R., Visser, H.G., Roodt, A.(2010). Tetraethylammonium tricarbonylchlorido(quinoxaline-2-carboxylato- κ²N¹,O)rhenate(I) . Acta Crystallographica Section E: Structure Reports Online. 66. (8).

Venter, J.A., Purcell, W., Visser, H.G.(2009). Di -μ- iodido-bis[acet-yl(4-methyl-2,6,7-trioxa-1-phosphabicyclo[2.2.2] octa-ne)(N-nitroso-N-oxidoaniline-κ2 O,O′)rhodium(III)] . Acta Crystallographica Section E: Structure Reports Online. 65. (12).

Viljoen, J.A., Visser, H.G., Roodt, A., Steyn, M.(2009). Di-μ-hydroxido-bis[tris(1,1,1,5,5,5-hexa-fluoro-acetyl-acetonato- κ2 O,O′)hafnium(IV)] acetone solvate . Acta Crystallographica Section E: Structure Reports Online. 65. (11).

Van Der Merwe, K.A., Visser, H.G., Venter, J.A.(2009). Diammonium diaqua-bis(methyl-enediphospho-nato-κ² O,O′)cobaltate(II) . Acta Crystallographica Section E: Structure Reports Online. 65. (11).

Grobbelaar, E., L&#246;tter, S., Visser, H.G., Conradie, J., Purcell, W.(2009). Investigation of the electron density of iridium(I) Vaska-type complexes using DFT calculations and structural results: Structure of trans-carbonyl-chloro-bis(tricyclohexylphosphine)-iridium(I) . Inorganica Chimica Acta. 362. (11). p. 3949-3954.

Cloete, N., Visser, H.G., Roodt, A., Gabrielli, W.F.(2009). N,N-Bis(diphenylphosphino)ethyl-amine . Acta Crystallographica Section E: Structure Reports Online. 65. (12).

Suthiram, J., Mhlaba, K., Zeevaart, J.R., Visser, H.G., Roodt, A.(2009). Tetra-ethyl-ammonium tricarbonyl-chlorido-(pyrazine-2-carboxyl-ato-N¹,O)rhenate(I) . Acta Crystallographica Section E: Structure Reports Online. 65. (11).

Viljoen, J.A., Visser, H.G., Roodt, A., Steyn, M.(2009). Tetrakis(quinolin-8-olato-κ² N,O)hafnium(IV) toluene disolvate . Acta Crystallographica Section E: Structure Reports Online. 65. (12).

Brink, A., Roodt, A., Visser, H.G.(2009). 2-(m-Tolyliminomethyl)phenol . Acta Crystallographica Section E: Structure Reports Online. 65. (12).

Schutte, M., Visser, H.G., Brink, A.(2009). Bromidotricarbonylrhenium(I) . Acta Crystallographica Section E: Structure Reports Online. 65. (12).

Venter, J.A., Purcell, W., Visser, H.G., Muller, T.J.(2009). Carbonyl(NnitrosoN-oxido-1-naphtylamine-κ2 O,O′)(triphenylphosphineP)rhodium(I) acetone solvate . Acta Crystallographica Section E: Structure Reports Online. 65. (12).

Mtshali, T.N., Purcell, W., Visser, H.G., Basson, S.S.(2008). A novel rhenium-aqua structure: The synthesis and structural characterization of (PPh<inf>4</inf>)<inf>4</inf>[ReN(H<inf>2</inf>O)(CN) <inf>3</inf>-μ-CN-ReN(CN)<inf>4</inf>]·5H<inf>2</inf>O . Transition Metal Chemistry. 33. (6). p. 711-716.

Schutte, M., Visser, H.G., Roodt, A.(2008). Aqua-tricarbon-yl(3,5,7-tribromo-tropolonato)rhenium(I) methanol solvate . Acta Crystallographica Section E: Structure Reports Online. 64. (12).

Visser, H.G., Purcell, W.(2008). Hexaamminecobalt(III) hexa-cyanido-manganate(III) . Acta Crystallographica Section E: Structure Reports Online. 64. (11).

Mtshali, T.N., Purcell, W., Visser, H.G., Basson, S.S.(2008). Kinetic study of reaction of [ReN(H<inf>2</inf>O)(CN)<inf>4</inf>] ^2- with quinoline-2-carboxylate and pyridine-2,3-dicarboxylate anions . Transition Metal Chemistry. 33. (4). p. 481-491.

Purcell, W., Visser, H.G.(2008). Tris(ethane-1,2-diamine-κ² N,N′)cobalt(II) cis-aqua-2κO - cyanido-1:2κ² C:N-hepta-cyanido- 1κ⁷ C-bis-(ethane-1,2-diamine-2² N,N′)cobalt(II)molybdenum(IV) dihydrate . Acta Crystallographica Section E: Structure Reports Online. 64. (11).

Schutte, M., Visser, H.G.(2008). Aqua-tricarbon-yl(4-carboxy-pyridine-2-carboxyl-ato-κ2 N,O 2)rhenium(I) . Acta Crystallographica Section E: Structure Reports Online. 64. (10).

Cloete, N., Visser, H.G., Roodt, A., Dixon, J.T., Blann, K.(2008). N,N-bis(diphenylphosphino)-1,2-dimethylpropylamine . Acta Crystallographica Section E: Structure Reports Online. 64. (2).

Brink, A., Roodt, A., Visser, H.G.(2007). Acetylacetonatocarbonyl(dicyclohexylphenylphosphine)rhodium(I) . Acta Crystallographica Section E: Structure Reports Online. 63. (1).

Mtshali, T.N., Purcell, W., Visser, H.G., Basson, S.S.(2007). Bis(tetra-phenyl-arsonium) tricyanidonitrido(quinoline-2-carboxyl-ato- 2 N,O)rhenate(V) dihydrate . Acta Crystallographica Section E: Structure Reports Online. 63. (4).

Visser, H.G.(2007). Caesium bis[N-(carboxymethyl)imino-diacetato]chromate(III) dihydrate . Acta Crystallographica Section E: Structure Reports Online. 63. (1).

Cloete, N., Visser, H.G., Roodt, A.(2007). Mer-Trichloro(2,2′2″-terpyridine)chromium(III) dimethyl sulfoxide solvate . Acta Crystallographica Section E: Structure Reports Online. 63. (1).

Visser, H.G., Purcell, W., Muller, A., Janse Van Rensburg, J.M., Molosia, P.(2007). Racemic dipotassium di-μ2-hydroxido-bis-{[N,N-bis-(carboxyl-atometh-yl) leucin-ato-4 N,O,O′,O′′]cobaltate(III)} tetra-hydrate . Acta Crystallographica Section E: Structure Reports Online. 63. (12).

Schutte, M., Visser, H.G., Steyl, G.(2007). Tetra-ethyl-ammonium bromidotricar-bonyl-[3,5,7-tribromo-tropolonato(1-)- k² O,O′]rhenate(I) . Acta Crystallographica Section E: Structure Reports Online. 63. (12).

Mtshali, T.N., Pureell, W., Visser, H.G.(2007). Tetraphenylphosphonium aquatetracyanonitridorhenate(V) pentahydrate . Acta Crystallographica Section E: Structure Reports Online. 63. (1).

Brink, A., Roodt, A., Visser, H.G.(2007). (Acetyl-acetonato-κ² O,O′)carbon-yl(cyclohexyl- diphenyl-phosphine-κP)rhodium(I) . Acta Crystallographica Section E: Structure Reports Online. 63. (11).

Cloete, N., Visser, H.G.(2007). (Acetylacetonato)aqua-(2,2′,2′′-terpyridine)chromium(III) bis(perchlorate) dihydrate hexamethylphosphoramide solvate . Acta Crystallographica Section E: Structure Reports Online. 63. (12).

Coetzee, M., Purcell, W., Visser, H.G., Venter, J.A.(2007). (Acetyl-acetonato-k2 O,O′)carbon-yl[2-(diphenyl-phosphino) pyridine-kP]rhodium(I) . Acta Crystallographica Section E: Structure Reports Online. 63. (12).

Visser, H.G., Purcell, W., Basson, S.S., Cloete, N.(2006). Di-μ-hydroxo bridge cleavage reactions between [Co(nta)(μ-OH)] <inf>2</inf>^2- and various N,N-bidentate ligands . South African Journal of Chemistry. 59. p. 55-59.

Mtshali, T.N., Purcell, W., Visser, H.G., Basson, S.S.(2006). A crystallographic and kinetic study of the formation of the tricyanonitrido(pyridine-2-carboxylato-κN,κO)rhenate(V) ion, [ReN(η²-pic)(CN)<inf>3</inf>]^2- . Polyhedron. 25. (12). p. 2415-2425.

Visser, H.G.(2006). Barium di-μ-hydroxo-bis[(nitrilotriacetato)-chromium(III)] hexahydrate . Acta Crystallographica Section E: Structure Reports Online. 62. (12).

Visser, H.G., Purcell, W., Cloete, N., Muller, A.(2005). Caesium bis[N-(carbamoylmethyl)iminodiacetato]chromate(III) dihydrate . Acta Crystallographica Section E: Structure Reports Online. 61. (8).

Potgieter, H., Purcell, W., Visser, H.G., Nicl&#243;s-Guti&#233;rrez, J.(2005). Identification of different Co(III) apda complexes: Crystallisation of [Co(H<inf>2</inf>O)<inf>6</inf>]·[Co(Hapda)<inf>2</inf>]<inf>2</inf>·H<inf>2</inf>O . Polyhedron. 24. (15). p. 1968-1974.

Visser, H.G., Purcell, W., Basson, S.S.(2003). Di-μ-hydroxo bridge-cleavage reactions between [Co(nta)(μ-OH)]<inf>2</inf>^2-and different monodentate ligands . Transition Metal Chemistry. 28. (2). p. 235-240.

Visser, H.G., Purcell, W., Basson, S.S.(2002). Kinetic study of the protonations and substitutions of different cobalt(III)-nta complexes . Transition Metal Chemistry. 27. (5). p. 461-468.

Visser, H.G., Purcell, W., Basson, S.S.(2001). A new reaction route for the synthesis of different cobalt(III)-nitrilotriacetato complexes. The crystal structure of Cs<inf>2</inf>[Co(nta)(Co<inf>3</inf>)]·H<inf>2</inf>O . Polyhedron. 20. (3-4). p. 185-190.

Visser, H.G., Purcell, W., Basson, S.S.(2001). Isolation and characterisation of products from the reactions between [Co<inf>2</inf>(nta)<inf>2</inf>(μ-OH)<inf>2</inf>]^2-and different ligands. The crystal structure of [Co(nta)(N,N-Et<inf>2</inf>en)] . Transition Metal Chemistry. 26. (1-2). p. 175-179.

Visser, H.G., Purcell, W., Basson, S.S.(1999). Identification of different Cr(III) nta complexes: Crystallisation of Cs<inf>2</inf>[Cr<inf>2</inf>(nta)<inf>2</inf>(μ-OH)<inf>2</inf>]·4H<inf>2</inf>O in two space groups . Polyhedron. 18. (21). p. 2795-2801.

Visser, H.G., Purcell, W., Basson, S.S., Claassen, Q.(1997). The syntheses and crystal structures of Cs<inf>2</inf>[Co<inf>2</inf>(nta)<inf>2</inf>(μ-OH)<inf>2</inf>] · 4H<inf>2</inf>O and (C<inf>10</inf>H<inf>10</inf>N<inf>3</inf>)<inf>2</inf>[CoCl<inf>4</inf>] . Polyhedron. 16. (16). p. 2851-2856.

Visser, H.G., Leipoldt, J.G., Purcell, W., Mostert, D.(1994). Substitution and protonation reactions of nitrilotriacetatochromium(III) ions . Polyhedron. 13. (6-7). p. 1051-1055.

BOOK

Herbst, L., Visser, H.G., Roodt, A.(2014). Redetermination of the niobium(V) precursor, [NbCl&lt;inf&gt;5&lt;/inf&gt;(NCCH&lt;inf&gt;3&lt;/inf&gt;)] . Advanced Materials Research. 1019. p. 412-418.

Koen, R., Roodt, A., Visser, H.(2014). The coordination of novel, hard ligand systems to tantalum(V) and niobium(V) metal centres . Advanced Materials Research. 1019. p. 426-432.