Abstract
A number of oxomolybdenum (VI) and (IV) complexes with potentially tridentate ONS donor Schiff bases of S-benzyl and S-methyl dithiocarbazates with salicylaldehyde have been synthesized. The Mo(VI) complexes are cis-dioxo, MoO 2L (where L= H 2L 1 and H 2L 2) with one coordination site available for substrate binding. The Mo(IV) complexes, MoOL, are derived from the corresponding Mo(VI)-dioxo complexes by oxo abstraction with PPh 3. The complexes were characterized by elemental analysis, UV, IR and 1H NMR spectroscopy, magnetic susceptibility measurement, molar conductivities in solution and by cyclic voltammetry. Two of the complexes MoO 2L 1 and MoO 2L 2 were crystallographically characterized. The structures reveal that the molybdenum acceptor center is present in a distorted octahedral NO 4S donor environment.
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