Talk given by

Prof. John F. Corrigan

Department of Chemistry

University of Western Ontario

London, Ontario

Canada

Abstract:

As a part of our efforts to prepare thermally stable, Group 11 “metallachalcogenolate”, ME, precursors and develop their chemistry for the formation of luminescent, mixed-metal chalcogenide clusters MM’E, N-heterocyclic carbene metal–chalcogenolate complexes of the general formula [(NHC)M-ESiMe₃] (NHC = N-heterocyclic carbene; M = Cu, Ag, Au; E = S, Se, Te) have been prepared. Both larger NHCs such as IPr (IPr = 1,3-bis(2,6-diisopropylphenyl)imidazolin-2-ylidene) and smaller ones such as (ⁱPr₂-bimy = 1,3-diisopropylbenzimidazolin-2-ylidene) can be used; reagents are generally prepared from the reaction between the corresponding carbene metal acetate, [(NHC)MOAc] and E(SiMe₃)₂. The reaction of [(IPr)M-ESiMe₃] with a second type of metal salt (M’X) allows for the formation of ternary clusters MM’E, often in a stepwise fashion due to the strong bonding interaction between metals and the surface NHC ligands.

References

M. Azizpoor Fard, F. Weigend, J. F. Corrigan, Chem. Commun., 2015, 51, 8361-8364.

M. Azizpoor Fard, T. I. Levchenko, C. Cadogan, William J. Humenny,  J.  F. Corrigan, Chem. Eur. J., 2016, 22, 4543-4550.