Planar tetracoordinate carbon—a novel environment in a pentaruthenium cluster
Abstract
Addition of ButNC to [Ru5(µ5-C2)(µ-SMe)2(µ-PPh2)2(CO)10] 1 results in expansion of the Ru5 polygon and flattening of the C2Ru5 cluster so that in the product 2 one carbon atom acquires a planar tetracoordinate configuration; reversible loss of CO from 2 affords a CNBut derivative of 1.