C. Matthew Bates, Pawan K. Khanna, Christopher P. Morley and Massimo Di Vaira
The reaction of cyclohepteno-1,4-diselenin 1 with [PtCl2(PhCN)2] proceeds via unprecedented oxidative addition of a C–Se bond to yield a platinum(IV) product, whose novel dimeric structure has been determined by X-ray crystallography; by contrast, 1 reacts with [PdCl2(PhCN)2] to form trans-[PdCl2L2] (L = 1).