PREPARATION AND X-RAY CRYSTAL-STRUCTURE OF THE TRIPLY HYDRAZIDE-BRIDGED COMPLEX [NH2ME2]2[(VCL3)2(MU-NNME2)3] - A SPECIES DERIVED FROM THE DISPROPORTIONATION OF SIME3NHNME2

The reaction of [VCl3(PMePh2)2] or [VCl3(thf)3] (thf = tetrahydrofuran) with SiMe3NHNMe2 produces the first triply hydrazide-bridged complex, identified by X-ray crystallography as [NH2Me2]2[{VCl3}2(mu-NNMe2)3] in which the cations are formed by cleavage of the hydrazine and the bridge in the anion comprises two hydrazide(2-) residues and one isodiazene residue.