The crystal and molecular structure of copper(I) trifluoromethanesulphonate cyclohexene complex

Abstract

The first crystal structure of a copper(I) trifluoromethanesulphonate (cyclo)olefin complex, viz. copper(I) triflate-cyclohexene, CuOSO2CF3 · C6H10, is presented. The compound crystallises in the space group P with a 10.288(1), b 10.412(1), c 11.059(1) Å, α 65.81(1), β 81.25(1), γ 70.45(1)° and Z = 4. The structure has been solved by Patterson and Fourier methods and refined to a final R = 0.062. The compound consists of tetrameric units which are interconnected by Cu---O---Cu bridges to give an infinite chain. The tetramer has Si symmetry. Both Cu ions are four-coordinated with a geometry that is intermediate between trigonal pyramidal and tetrahedral. The copper ions in the tetramer are joined together by oxygen—sulphur—oxygen bridges of the triflate anion.