Acta Cryst. (2009). E65, m1307  [ doi:10.1107/S1600536809039804 ]

Dichloridobis{N-[(dimethylamino)dimethylsilyl]-2,6-dimethylanilido-²N,N'}zirconium(IV)

J. Chen

Abstract: The monomeric title zirconium(IV) compound, [Zr(C₁₂H₂₁N₂Si)₂Cl₂], was prepared by the metathetical reaction of [LiN(SiMe₂NMe₂)(2,6-Me₂C₆H₃)]₂ with zirconium tetrachloride. The Zr^IV atom is N,N'-chelated by the N-silylated anilido ligand. Along with two Cl atoms, the six-coordinated Zr^IV atom demonstrates a highly distorted octahedral geometry. The two ligands around the Zr^IV atom are arranged cis to each other and obey the C₂ symmetry operation. That means the asymmetric unit consists of only half of the molecular compound and the complete molecule is generated by a twofold axis. The two ends of the N-Si-N chelating unit exhibit different affinities for the metal center. The Zr-N_amino bond is longer than the Zr-N_anilido bond.

Online 7 October 2009

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