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Issue 1, 2016
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Exploring potential cooperative effects in dicopper(i)-di-mesoionic carbene complexes: applications in click catalysis

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Abstract

Triazolylidenes are an emerging class of mesoionic carbenes with potential as ligands in homogeneous catalysis. In this contribution we present well-defined dicopper(I) complexes with di-mesoionic carbenes where the copper centers are held at a distance of about 2.8 Å. All complexes display excellent activity as pre-catalysts for the azide–alkyne cycloaddition (click) reaction. Comparisons with analogous mononuclear complexes show the dinuclear pre-catalysts to be twice as active for the same amount of copper used. These results thus point to potentially strong cooperative effects in these dinuclear complexes, and further support the recently established dinuclear reaction pathway for the click reaction. The results presented here provide a synthetic route for generating dinuclear complexes with di-mesoionic carbenes with relatively short metal–metal distances, and opens a general platform for investigating potential cooperative effects in catalysis.

Graphical abstract: Exploring potential cooperative effects in dicopper(i)-di-mesoionic carbene complexes: applications in click catalysis

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Supplementary files

Article information


Submitted
27 Aug 2015
Accepted
01 Dec 2015
First published
02 Dec 2015

Inorg. Chem. Front., 2016,3, 67-77
Article type
Research Article

Exploring potential cooperative effects in dicopper(I)-di-mesoionic carbene complexes: applications in click catalysis

S. Hohloch, L. Suntrup and B. Sarkar, Inorg. Chem. Front., 2016, 3, 67
DOI: 10.1039/C5QI00163C

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