P. Cox, P. Aslanidis, P. Karagiannidis
Jul 1, 2000
Citations
1
Influential Citations
30
Citations
Journal
Polyhedron
Abstract
Abstract Treatment of copper(I) bromide with one equivalent of 1,2-bis(diphenylphosphino)ethane (dppe), followed by the addition of one equivalent of heterocyclic thione L {L=pyridine-2-thione (py2SH), pyrimidine-2-thione (pymtH), imidazole-2-thione (imtH), benz-1,3-imidazoline-2-thione (bzimtH2), benz-1,3-thiazoline-2-thione (bztztH), 2-mercapto-1-methylimidazole (meimtH), 4,6-dimethylpyrimidine-2-thione (dmpymtH), and 6-ethoxybenz-1,3-thiazoline-2-thione (etObztztH) in dry acetone affords the dinuclear complexes [CuBr(dppe)(L)]2 in ca. 60–80% yield. These compounds have been characterized by their IR, far-IR, UV–Vis and 1H NMR spectroscopic data. The crystal structure of [CuBr(dppe)(py2SH)]2 has been determined by single-crystal X-ray diffraction methods. In the dinuclear complex in which the two monomers are related by inversion, each Cu(I) centre exhibits a tetrahedral coordination sphere involving, besides the bromine, the exocyclic sulfur of one thione molecule and two phosphor atoms from two different diphosphine units. Vibrational, electronic and 1H NMR spectral data of the complexes are discussed in relation to the structure.