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Synthesis of a Bis(N-heterocyclic carbene)palladium Complex via Oxidative Addition of a C−C Bond in a Biimidazolium Ion

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journal contribution
posted on 15.01.2007, 00:00 by Murray V. Baker, David H. Brown, Valerie J. Hesler, Brian W. Skelton, Allan H. White
The formation of a cyclophane−NHC complex of Pd(II) via oxidative addition of a C−C bond in a bridged biimidazolium ion to Pd(0) is described. The active Pd(0) species appears to be [Pd(PPh3)2Br]-. Simple (unbridged) biimidazolium ions do not form NHC complexes under similar conditions.