Coppper(I) ethylenediamine carbonyl complexes: ‘models’ for carbon monoxide activation. X-Ray structure of the ion-pair carbonylethylenediaminetetraphenylboratocopper

Abstract

Copper (I) iodide absorbs carbon monoxide in methanol in the presence of ethylenediamine (en), giving solutions from which [Cu₂(en)₃(CO)₂]I₂, [Cu₂(en)₃(CO)₂](BPh₄)₂, and [Cu(en)₂CO]I have been obtained as thermally stable compounds; the reaction of CuCOCl with en allowed the isolation of [Cu(en)(CO)PhBPh₃], an X-ray structure determination of which shows the presence of a three-co-ordinate copper(I) interacting with the BPh₄^– anion.