Unexpected Reactions of Anionic Intermediates [(μ-RE)(μ-SCS)Fe 2 (CO) 6 ] - with SO 2 Cl 2 . Synthesis and Characterization of Novel Dithioformato-Bridged Double Clusters [(μ-RE)Fe 2 (CO) 6 ] 2 (μ-SCS-μ) (E = S, Se)

The dithioformato-bridged anionic salts [Et 3 NH][(μ-RE)(μ-S CS)Fe 2 (CO) 6 ], generated from CO-bridged anionic complexes [Et 3 NH][μ-RE)(μ-CO)Fe 2 (CO) 6 ] and carbon disulfide, reacted in situ with SO 2 Cl 2 in THF to afford a series of novel dithioformato-bridged double clusters [(μ-RE)Fe 2 (CO) 6 ] 2 (μ-S CS-μ) (3 a−e ) (3 a, RE = EtS; 3 b, n-PrS; 3 c, t-BuS; 3 d, PhSe; 3 e, p-MeC 6 H 4 Se). A single-crystal diffraction analysis of 3 c was undertaken and has confirmed the proposed structure.