Abstract

Synthesis, spectroscopic ( 1H, 13C, 31P, 29Si NMR) characterisation and X-ray structure of the first nickel(0) π-complex with vinylcyclosilazane [{Ni(PPh 3)} 2{μ-(η-CH 2CH(Me)Si(μ-NH)) 4}] ( 1a) have been presented. This is the first report on the structure of a TM complex with a vinylsilazane ligand. Complex 1a is synthesised by the reaction of [Ni(cod) 2] with cyclotetra (vinylmethylsilazane). The complex occupies a special position of the space group P2 1/ c on the centre of symmetry that lies in the middle of the cyclotetrasilazane ring. The coordination of nickel is close to triangular one.

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