Molybdenum(￥μ), -(￥′), and -(￥3) Oxo Complexes with S-methyl 3-(2-hydroxypheny)methylenedithiocarbazate and Its Derivatives

摘要

A number of molybdenum(サ), -(ゴ), and -(コ) oxo complexes with S-methyl 3-(2-hydroxyphenyl)methylenedithiocarbazate and its derivatives as the ONS-donor metal-binding substrate are synthesized. The Mo(サ)-dioxo complexes are cis-dioxo MoO2L(D), where D is solvent molecules such as MeOH, DMF, Py(pyridine), DMSO, and ャ-Pic(ャ-picoline). The Mo(ゴ)-oxo complexes are of the type (PyH)[MoO(NCS)2L] with an octahedral geometry. The Mo(コ)-oxo complexes, MoOL are derived from corresponding Mo(サ)-dioxo complexes by oxo abstraction with PPh3. The complexes are characterized by IR, 1H-NMR, UV-Vis spectroscopy and cyclic voltammetry. On the basis of ligand displacement reaction, the qualitative order of D binding for MoO2L(D) complexes is also discussed.