A Chelate-Stabilized Tungsten-Imido-Monoalkyl Complex, [WCl(PhN)(CH₂CMe₃){o-C₆H₄(NSiMe₃)₂}]

The title compound, [N,N'-bis(trimethylsilyl)-o-phenylenediamido-N,N'] (chloro)(neopentyl)(phenylimido-N) tungsten(VI), [WCl(C₅H₁₁(C₆H₅N)(C₁₂H₂₂N₂Si₂)], has been synthesized and its crystal structure determined. The geometry around the W atom, imposed by the bidentate o-phenylenediamido ligand and the bulky neopentyl ligand, is that of a distorted trigonal bipyramid. A relatively short W-N(imido) bond length of 1.741 (4) Å, is interpreted as arising from the interaction of the lone pair of electrons on the imido N and the W metal center.

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