Preparation of isocyanide and mixed dinitrogen–isocyanide complexes of rhenium(I) from reactions of trans-[ReCl(N2)(PMe2Ph)4], mer-[Re(S2PPh2)(N2)(PMe2Ph)3], or mer-[Re(S2CNEt2)(N2)(PMe2Ph)3] with methyl isocyanide; crystal structure of mer-[Re(S2PPh2)(N2)(CNMe)(PMe2Ph)3]

Abstract

Treatment of a tetrahydrofuran solution of trans-[ReCl(N₂)L₄](L = PMe₂Ph) or mer-[Re(S₂PPh₂)(N₂)L₃] with CNMe affords the mixed dinitrogen–isocyanide complexes mer-[ReX(N₂)(CNMe)L₃](X = Cl or S₂PPh₂) or [Re(S₂PPh₂)(N₂)(CNMe)₂L₂], as well as [ReX(CNMe)L₃](X = S₂PPh₂). Dinitrogen evolution occurs in the reaction of CNMe with mer-[Re(S₂CNEt₂)(N₂)L₃] to give [ReX(CNMe)L₃](X = S₂CNEt₂) and [Re(S₂CNEt₂)(CNMe)₂L₂]. The crystal structure of mer-[Re(S₂PPh₂)(N₂)(CNMe)L₃] has been determined.