Acta Cryst. (2012). E68, m1167-m1168
[ doi:10.1107/S1600536812032321 ]

Bis[-N-(tert-butyldimethylsilyl)-N-(pyridin-2-ylmethyl)amido]bis[methylcobalt(II)]

A. Malassa, C. Agthe, H. Görls and M. Westerhausen

Abstract: The green title complex, [Co₂(CH₃)₂(C₁₂H₂₁N₂Si)₂], was obtained from bis{[-N-tert-butyldimethylsilyl-N-(pyridin-2-ylmethyl)amido]chloridocobalt(II)} and methyllithium in diethyl ether at 195 K via a metathesis reaction. The dimeric cobalt(II) complex exhibits a crystallographic center of inversion in the middle of the Co₂N₂ ring (average Co-N = 2.050 Å). The Co^II atom shows a distorted tetrahedral coordination sphere. The exocyclic Co-N bond length to the pyridyl group shows a similar value of 2.045 (4) Å. The exocyclic methyl group has a rather long Co-C bond length of 2.019 (5) Å.

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