Novel metal framework rearrangements in mercury-bridged cluster complexes: X-ray crystal structures of[Hg{Fe2M(µ3-COMe)(CO)7(η-C5H5)}2](M Co and Rh)

Abstract

Differing metal connectivities are found for [Hg{Fe₂M(µ₃-COMe)(CO)₇(η-C₅H₅)}₂](M = Co and Rh) in the solid state, whilst in solution ¹³C and ¹⁹⁹Hg n.m.r. data suggest a novel polytopal rearrangement in the Rh compound with the Hg atom migrating around the Fe₂Rh triangles.