Preparation, structure, and redox properties of isocyanide complexes of molybdenum(0) and tungsten(0)

Abstract

The complexes trans-[M(CNR)₂(dppe)₂](A)(M = Mo or W; R = Me, Bu^t, Ph, C₆H₄Me-4, C₆H₄Cl-4, C₆H₃Cl₂-2,6, or C₆H₄OMe-4; dppe = Ph₂PCH₂CH₂PPh₂) have been prepared. They have low ν(NC) values which are discussed in terms of their electronic structure. The electrochemical properties of the complexes are described and correlations are drawn between their redox potentials and the electronic properties of the isocyanide ligands.