Department of Chemistry


Senior Lecturer

1 South 1.47


Tel: +44 (0) 1225 383305 

Personal website


Dr Randolf Kohn


A large variety of N-substituted 1,3,5-triazacyclohexanes (R3TAC) can be easily prepared from formaldehyde and primary amines. We are investigating the general coordination chemistry with transition metal ranging from the lanthanides to zinc. We are examining the complexes mainly by X-ray crystallography, UV/visible, IR, Raman, and NMR spectroscopy.
R3TAC occupies three coordination sites of the metal with unusually small N-metal-N angles of 60-65°. This leads to low steric demand of the ligand and allows the preparation of unusual complexes and increased catalytic activity in general.

Research Interests

  • Catalysis of Polymerisation and Trimerisation of Olefin
  • Bio-Analogous Copper Complexes for Oxygen Activation
  • Transition Metal Clusters


Coxon, A. G. N. and Kohn, R. D., 2016. Efficient 1-hexene trimerization with triazacyclohexane chromium catalysts and detailed product analysis by 13C NMR. ACS Catalysis, 6 (5), pp. 3008-3016.

Kohn, R., Coxon, A. G. N., Hawkins, C. R., Smith, D., Mihan, S., Schuhen, K., Schiendorfer, M. and Kociok-Köhn, G., 2014. Selective trimerisation and polymerisation of ethylene:Halogenated chromium triazacyclohexane complexes as probes for an internal 'halogen effect'. Polyhedron, 84, pp. 3-13.

Kohn, R., 2013. Oligo- and Polymerization of Olefins. In: Comprehensive Inorganic Chemistry II.Vol. 6. 2 ed. Elsevier, pp. 127-154.

Latreche, S., Mousser, A., Kociok-Kohn, G., Kohn, R. D. and Schaper, F., 2010. Unsymmetrically substituted triazacyclohexanes and their chromium complexes. Polyhedron, 29 (5), pp. 1399-1404.

Kohn, R. D., Laudo, L. T., Pan, Z., Speiser, F. and Kociok-Kohn, G., 2009. Triangular tricopper(I) clusters supported by donor-substituted triazacyclohexanes. Dalton Transactions, 2009 (23), pp. 4556-4568.

This list was generated on Fri Oct 20 10:37:33 2017 IST.

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