M. Semmelmann et al., COPPER-CHALCOGENIDE CLUSTERS STABILIZED WITH LINEAR BIDENTATE PHOSPHINE-LIGANDS, Journal of the Chemical Society. Dalton transactions, (15), 1998, pp. 2541-2545
The bidentate phosphine ligands bis(diphenylphosphino)acetylene and 1,
4-bis(diphenylphosphino)benzene have been found effectively to stabili
se polynuclear copper/chalcogenide/chalcogenolate cores, acting as int
ramolecular bridges between copper centres. The clusters [Cu16Se4(SePh
)(8)(mu-1,4-Ph2PC6H4PPh2)(4)] 1 and [Cu25Te6(TeBun)(13)(mu-Ph2PC=CPPh2
)(6)] 2 and the related binuclear complexes [((BuTe)-Te-n)Cu(mu-Ph2PC=
CPPh2)(3)Cu(TeBun)] 3 and [(PhSe)-Cu(mu-Ph2PC=CC=CPPh2)(3)Cu(SePh)] 4
have been prepared and their molecular structures determined.