摘要:
Synthesis, spectroscopic (H-1, C-13, P-31, Si-29 NMR) characterisation and X-ray structure of the first nickel(0) pi-complex with vinylcyclosilazane [{Ni(PPh3)}(2){mu-(eta-CH2=CH(Me)Si(mu-NH))(4)}] (1a) have been presented. This is the first report on the structure of a TM complex with a vinylsilazane ligand. Complex la 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. (C) 2002 Elsevier Science Ltd. All rights reserved.