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A square planar silylene nickel four-membered ring.

Sebastian KaufmannRalf KöppePeter W Roesky
Published in: Dalton transactions (Cambridge, England : 2003) (2021)
Herein the new nickel silylene [PhC(NtBu)2SiNi(C5Me5)]2, which features a square planar central ring motif consisting of two silicon and two nickel atoms is presented. The title compound was obtained by an insertion of the Ni(0) precursor [Ni(cod)2] (cod = 1,5-cyclooctadiene) in the Si-C bond of the silylene [PhC(NtBu)2Si(C5Me5)]. Analytic characterisation including mass spectrometry as well as IR and Raman spectroscopies was combined with quantum chemical calculations to get an insight on the bonding situation within the four-membered Si-Ni-ring.
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