Reaction of metal carbonyls with 2-hydroxy-1-naphthaldeyde methanesulfonylhydrazone and characterization of the substitution products

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