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][(mu-RE)(mu-CO)Fe-2(CO)(6)] (E = S, Se) (1) with aryl azides gives bridging triazenido complexes (mu-RE)(mu-p-(RC6H4N3H)-C-1)Fe-2(CO)(6) (2-8) (2, RE = (BuS)-S-t, R-1 = H; 3, RE = PhS, R-1 = H; 4, RE = (BuS)-S-t, R-1 = Cl; 5, RE = (BuS)-S-t, R-1 = MeO; 6, RE = PhS, R-1 = MeO; 7, RE = PhSe, R-1 = H; 8, RE = PhSe, R-1 = Cl). These complexes were characterized by elemental analyses and H-1-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. (C) 2000 Elsevier Science S.A. All rights reserved.