The structure of a nickel–1,3-diene complex
Abstract
When (dcpe)Ni(cod)[dcpe =(C6H11)2PCH2CH2P(C6H11)2, cod = cyclo-octa-1,5-diene] reacts with penta-2,4-dienoic acid methyl ester (1) at 0 °C, the cod ligand is displaced by the substituted diene to give a new nickel-1,3-diene complex; a crystal structure determination of this compound reveals unexpected structure features that might be important in understanding the nickel(0) catalysed reactions of (1).