摘要:
Reactions of the higher molybdenum and tungsten chlorides with phenyl isothiocyanate or with N,N'-dicyclohexylcarbodiimide and carbon dioxide in dichloroethane are the first to demonstrate the possibility of insertion of carbon dioxide in combination with other heterocumulenes into transition metal-halogen bonds. IR spectroscopy and elemental analysis data show that the reactions result in the attachment of the ligands at the same metal-chlorine bond and the formation of heteromolecular insertion products with the compositions[MoOCl3{N(Ph)C(S)}(2)NC(Me)Cl]andMClx{OC(O)[(Hex)NCN(Hex)](2)}Cl,where x = 4 and 5 for the Mo and W derivatives, respectively.