Reaction of [Et3NH][(μ-RE)(μ-CO)Fe2(CO)6] (E=S, Se) with azides. Synthesis of (μ-RE)(μ-p-R1C6H4N3H)Fe2(CO)6 and crystal structure of (μ-ButS)(μ-PhN3H)Fe2(CO)6

The reaction of [Et3NH][(μ-RE)(μ-CO)Fe2(CO)6] (E=S, Se) (1) with aryl azides gives bridging triazenido complexes (μ-RE)(μ-p-R1C6H4N3H)Fe2(CO)6 (2–8) (2, RE=ButS, R1=H; 3, RE=PhS, R1=H; 4, RE=ButS, R1=Cl; 5, RE=ButS, R1=MeO; 6, RE=PhS, R1=MeO; 7, RE=PhSe, R1=H; 8, RE=PhSe, R1=Cl). These complexes were characterized by elemental analyses and 1H-NMR and IR spectroscopy. The structure of complex 2, established by single-crystal X-ray diffraction analysis, shows that the triazenido ligand binds to two iron centers in a bridging bidentate fashion.