Synthesis and Characterization of Metal Carbonyls [M(CO)₆(M =Cr, Mo, W), Re(CO)₅Br, Mn(CO)₃Cp] with 2-Hydroxy-1-napthaldehyde Ethanesulfonylhydrazone (nafesh)

Abstract

Abstract Five new complexes, M(CO) 5 (nafesh) (M = Cr (1), Mo (2), W (3)), Re(CO) 4 Br(nafesh) (4) and Mn(CO) 3 (nafesh) (5) have been synthesized by the photochemical reaction of metal carbonyls M(CO) 6 (M = Cr, Mo, W), Re(CO) 5 Br, and Mn(CO) 3 Cp with 2-hydroxy-1-napthaldehyde ethanesulfonylhydrazone (nafesh). The complexes have been characterized by elemental analysis, EI mass spectrometry, FT-IR, 1 H NMR spectroscopy. The spectroscopic studies show that nafesh behaves as a monodentate ligand coordinating via imine N donor atom in M(CO) 5 (nafesh) (M = Cr, Mo, W) and Re(CO) 4 Br(nafesh) and as tridentate ligand in Mn(CO) 3 (nafesh).