A new family of nitrido carbonyl clusters. Synthesis and structural characterization of the anions [Rh6MN(CO)15]2–(MCo, Rh, or Ir), and evidence for metal atom migration in the cluster

Abstract

The anions [Rh₆MN(CO)₁₅]^2–(M Co,Rh, or Ir), obtained by condensation of [Rh₆N(CO)₁₅]^– and [M(CO)₄]^–, contain a metallic array consisting of a trigonal prism capped on a square face, with the nitride inside the prismatic hole; the mixed-metal species show an unexpected migration of the entering metal from the capping position to the vertices of the prism.