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Associate Professor Daniela Bezuidenhout

Associate Professor Daniela Bezuidenhout
Position:
Associate Professor
Qualifications: BSc(Hons), MSc, PhD (UP)
Department: Chemistry
Phone: 011 717 6786
Email: daniela.bezuidenhout@wits.ac.za
Room: Humphrey Raikes C505

Research Interests

Research in my group focuses on two core areas:

(i) Synthesis of carbenes for application in homogeneous catalysis and small molecule activation.

Projects in this area focus on the design of a diverse range of heteroatom-stabilised carbenes [Fischer, N-heterocyclic and mesoionic] to modulate the behaviour of metal complexes for the activation of small molecules and enthalpically strong bonds, in the design of active and selective homogeneous catalysts. Targeted transformations include hydroelementation of C-C multiple bonds, transfer (de)hydrogenation, C-C coupling reactions, and hydroformylation.

(ii) Synthesis of carbenes for optoelectronic applications.

Projects in this area are related to the design and synthesis of push-pull systems entailing a tuneable metal-carbon (double) bond, with the possibility of reversible electronic poles around a metal-carbene.  The aim of these studies is to study the electron movement in the charge transfer processes and to investigate the role and viability of incorporating metal-carbene fragments in the design of potential smart materials (optoelectronic applications, voltaic cells for solar energy devices).

Publications

Examples of selected recent publications:

I. Strydom, G. Guisado-Barrios, I. Fernández, D. C. Liles, E. Peris, and D. I. Bezuidenhout. A Hemilabile and Cooperative N-Donor-Functionalized 1,2,3-Triazol-5-Ylidene Ligand for Alkyne Hydrothiolation Reactions. Chem.– Eur. J. 23 (2017) 1393-1401  (cited as a “Hot article”).

G. Kleinhans, M. M. Hansmann, G. Guisado-Barrios, D. C. Liles, G. Bertrand and D. I. Bezuidenhout. Nucleophilic T-shaped (LXL)Au(I)-Pincer Complexes: Protonation and Alkylation. J. Am. Chem. Soc. 138 (2016) 15873-15876 (featured as a “Spotlight article”in J. Am. Chem. Soc. 138, 16567 ).

G. Kleinhans, G.Guisado-Barrios, D. C. Liles, G. Bertrand and D. I. Bezuidenhout. Rhodium(I) Oxygen Adduct as a Selective Catalyst for One-Pot Sequential Alkyne Dimerization-Hydrothiolation Tandem Reactions.  Chem. Commun. 52 (2016) 3504-3507.

G. K. Ramollo, M.J. López-Gómez, D. C. Liles, L. C. Matsinha, G. S. Smith and D. I. Bezuidenhout. Rhodium(I) ferrocenylcarbene complexes: Synthesis, structural determination, electrochemistry and application as hydroformylation catalyst precursors.  Organometallics 34 (2015) 5745-5753.

Z. Lamprecht, N. A. van Jaarsveld, D. I. Bezuidenhout, D. C. Liles and S. Lotz. Synthesis and properties of mono– and dimetal Fischer multicarbene complexes derived from thiophene and thieno[2,3–b]thiophene.  Dalton Trans. 44 (2015) 19218-19231

B. van der Westhuizen, J. M. Speck, M. Korb, D. I. Bezuidenhout and H. Lang. (Spectro)electrochemical investigations on (ferrocenyl)thiophenes modified by tungsten Fischer carbenes.  J. Organomet. Chem. 772-773 (2014) 18-26.

D. I. Bezuidenhout, B. van der Westhuizen, P.J. Swarts, T. Chatturgoon O. Q. Munro, I. Fernández, and J. C. Swarts. Redox behaviour of cymantrene Fischer carbene complexes in designing organometallic multi-tags. Chem. Eur. J. 20 (17) (2014) 4974-4985.

D. I. Bezuidenhout, G. Kleinhans, G. Guisado-Barrios, D. C. Liles, G. Ung and G. Bertrand. Isolation of a potassium bis(1,2,3-triazol-5-ylidene)carbazolide: A stabilizing pincer ligand for reactive late transition metal complexes. Chem. Comm. 50 ( 2014) 2431-2433.

D.I. Bezuidenhout, B. van der Westhuizen, N.A. van Jaarsveld, S. Lotz. Trends in the chemistry of mono- to multimetal π-arene complexes of chromium and manganese. Journal of Inorganic and Organometallic Polymers and Materials, 24 (2014) 39-57.

D. I. Bezuidenhout, B. van der Westhuizen, A. J. Rosenthal, M. Wörle, D. C. Liles and I. Fernández. Fischer-type gold(I) carbene complexes stabilized by aurophilic interactions. Dalton Trans. 43 (2014) 398-401. (Cited as a “Hot topic article”)

D. I. Bezuidenhout, I. Fernández, B. van der Westhuizen, P. J. Swarts, and J. C. Swarts. Electrochemical and computational study of tungsten(0) ferrocene complexes: observation of the mono-oxidized tungsten(0) ferrocenium species and intramolecular electronic interactions. Organometallics 32 (2013) 7334-7344.

B. van der Westhuizen, J. M. Speck, M. Korb, J. Friedrich, D. I. Bezuidenhout and H. Lang. Metal-Metal Interaction in Fischer Carbene Complexes: A Study of Ferrocenyl and Biferrocenyl Tungsten Alkylidene Complexes.  Inorg. Chem. 52 (2013) 14253-14264.

B. van der Westhuizen, P.J. Swarts, L.M. van Jaarsveld, D.C. Liles, U. Siegert, J.C. Swarts, I. Fernandez, D.I. Bezuidenhout. Substituent effects on the electrochemical, spectroscopic, and structural properties of Fischer mono- and biscarbene complexes of chromium(0).  Inorg. Chem. 52 (2013) 6674-6684.

B. van der Westhuizen, P.J. Swarts, I. Strydom, D.C. Liles, I. Fernandez, J.C. Swarts, D.I. Bezuidenhout. Electrochemical illumination of thienyl and ferrocenyl chromium(0) Fischer carbene complexes. Dalton Trans. 42 (2013) 5367-5378.

Invited paper: D.I. Bezuidenhout, S. Lotz, D.C. Liles, B. van der Westhuizen, Recent advances in the field of multicarbene and multimetal carbene complexes of the Fischer-type.  Coord. Chem. Rev. 256 (2012) 479-524.

D.I. Bezuidenhout, W. Barnard, B. van der Westhuizen and D.C. Liles. Multimetal Fischer carbene complexes of Group VI transition metals: synthesis, structure and substituent effect investigation.  Dalton Trans. 40 (2011) 6711-6721. (Cited in Science 342 (2013) 351-352).

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