The photochemical generation of heterobimetallic complexes containing carbon disulfide

Photochemistry has been used to generate a number of heterobimetallic complexes containing pi + sigma CS2 bridging groups. Broad-band UV photolysis of tetrahydrofuran (thf) solutions of [M(CO)(6)] (M = Cr, Mo or W) with [Fe(Co)(2)(PR3)(2)(eta(2)-CS2)] (R = Et or Ph) leads to the formation of the bimetallic complexes [(PR3)(2)(CO)(2)Fe(mu-eta(2):eta(1)-CS2)M(CO)(5)]. Photolysis of acetonitrile solutions of [Os-3(CO)(12)] with [Fe(CO)(2)(PR3)(2)(eta(2)-CS2)] leads to [(PR3)(2)(CO)(2)Fe(mu-eta(2):eta(1)-CS2)Os-3(CO)(11)]. Photolysis of a thf solution of (PEt3)(2)(CO)(2)Fe(mu-eta(2):eta(1)-CS2)M(CO)(5)] with PEt3 results in the formation of the phosphine-substituted Complex [(PPh3)(2)(CO)(2)Fe(mu-eta(2):eta(1)-CS2)M(CO)(4)(PEt3)]. Single-crystal X-ray diffraction has been used to determine the molecular structures of [(PPh3)(2)(CO)(2)Fe(mu-eta(2):eta(1)-CS2)W(CO)(5)], [(Pet(3))(2)(CO)(2)Fe(mu-eta(2):eta(1)-CS2)Os-3(CO)(11)] and [(PPh3)(2)(CO)(2)Fe(mu-eta(2):eta(1)-CS2)Cr(CO)(4)(PEt3)].