“…Prompted by our interest in a systematic investigation of tripodal thioethers of general formula MeSi(CH 2 SR) 3 , we recently reported the preparation of MeSi(CH 2 SMe) 3 and the synthesis and structural characterization of its group 6 metal tricarbonyl derivatives {MeSi(CH 2 SMe) 3 }M(CO) 3 (M = Cr, Mo, W) (Yim, Tran, Dobbin et al, 1999). In contrast to the mononuclear nature of these complexes, the reactions of MeSi(CH 2 SMe) 3 with the copper(I) halides CuX (X = Cl, Br) yielded one-dimensional coordination polymers of stoichiometry Cu 3 {MeSi(CH 2 SMe) 3 }X 3 (Yim, Tran, Pullen et al, 1999). Unexpectedly, the corresponding reaction of CuI, under similar conditions, produced a 1:1:1 species of composition {MeSi(CH 2 SMe) 3 }CuI, which we initially assumed to be analogous to the mononuclear crown thioether derivative (9S3)CuI (Ku È ppers et al, 1987).…”