Synthesis and molecular geometry of novel di- and tri-nuclear iron complexes resulting from the interaction of [Fe2(CO)9] with R–NSN–R (R = t-butyl or p-tolyl); X-ray crystal structures of [Fe2(CO)6{RNC(O)S}] and [Fe3(CO)9(RNS)S]

Abstract

The reaction of [Fe₂(CO)₉] with RNSNR (R = Bu^t or p-tolyl) leads to a breakdown of the diimidosulphur ligand resulting in the formation of [Fe₂(CO)₆(RNS)](R = Bu^t), [Fe₃(CO)₉S₂], [Fe₃(CO)₉(RNS)S](R =p-tolyl), and [Fe₂(CO)₆{RNC(O)S}](R =p-tolyl or Bu^t) which involves the as yet unknown insertion of CO into a N–S bond, and [Fe₃(CO)₉(RNS)S](R = Bu^t) which has the novel prismane type structure.