摘要:
Pentamethylcyclopentadienylrhodium dication, [Cp*Rh(AN)3]2+ (AN = acetonitrile), reacts with hydrogen hexachloroplatinate(IV), H2PtCl6, in acetonitrile to give quantitatively, [Cp*RhPtCl6] (1). The reaction of 1 with [Cp*Rh(AN)3]2+ in acetonitrile provides [(Cp*Rh)2(mu-Cl)3][PtCl5(CH3CONH2)] (2). Recrystallization of 1 from hot water gives a different salt, [(Cp*Rh)2(mu-Cl)3]2[PtCl6] (3). Single-crystal X-ray diffraction analyses have revealed that 2 and 3 are salts of the tri-mu-chloro dirhodium cation and pentachloroplatinate with acetamide or hexachloroplatinate. The acetamide molecule in 2 takes an iminol configuration and coordinates to the platinum atom through the nitrogen atom. Crystal data: [(Cp*Rh)2(mu-Cl)3][PtCl5(CH3CONH2)].2CHCl3, monoclinic, space group P2(1)/n, a = 27.456(2), b = 13.131(1), c = 11.706(1) angstrom, beta = 91.27(1)degrees, Z = 4; [(Cp*Rh)2(mu-Cl)3]2[PtCl6], monoclinic, space group C2/m, a = 27.068(3), b = 11.104(1), c = 8.968(2) angstrom, beta = 101.15(2)degrees, Z = 2.