Abstract
The study of coordination compounds of tetracyanoethylene (TCNE) and related redox-active molecules has been the subject of much interest recently in relation to the development of materials with unusual electronic and magnetic properties [1–5]. The chemistry of copper tetracyanoethylene compounds is rather poor and only very limited data are available in the literature. The reaction of TCNE with copper powder was claimed to give [Cu +(TCNE −)] in good yield [6]. We have found that in the reaction of Cu 0 with TCNE in pyridine C-CN bond rupture occurs and [CuCN(py) 2] n could be isolated and characterized by X-ray analysis along with a polymeric organic material [7]. In the course of our studies of metallic copper with TCNE we reinvestigated the reaction of Cu 0 with TCNE, also in the presence of different ligands.
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