Synthesis and characterization of the bimetallic series [S2WS2Fe(NCS) (X)](2-) (X = Cl-, NCS-, N-3(-))

摘要

A series of thioheterobimetallic anions have been synthesized: [S2WS2Fe(NCS)X](2-) (X = Cl- (1); X = NCS- (2); X = N-3(-) (3)). The molecular dianions were isolated by substitution in [S2WS2FeCl2](2-) of the labile terminal chloro ligands by NCS- and/or N-3(-). Anions (1) and (3) are the first iron tris-heteroleptic complexes of the well-known [S2WS2FeX2](2-) (M = Mo, W) family. The structures of the three molecular anions, isolated as tetraphenylphosphonium salts, are reported, as well as characterization by IR, electronic and electrospray mass spectroscopies. (C) 2004 Elsevier B.V. All rights reserved.