The crystal structures of (R3P)2Ni-anthracene (R = Et, Bu).
The title complexes I (R = Et, Bu) have solid state structures in which the Ni atom is bound h2 to the anthracene. Crystal packing forces and interactions between an alkyl group of one mol. and the anthracene ring system of a second mol. may favor the h2 structure over the h4 structure obsd. in soln.
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