두 개 산소 가교형 몰리브덴(V)착물의 합성과 그 성질에 관한 연구

Synthesis and Characterization of a Di-μ-oxo-bridged Molybdeum(V) Complexes

The Mo(V) di-μ-oxo type [Mo₂O₄(H₂O)₂L]Cl₂ complexes(L: 4,4 -Diphenyl-2,2 -dipyridyl, 4,4 -Dimethyl-2,2 -dipyridyl, 4,7-Diphenyl-1,10-phenanthroline) have been prepared by the reaction of [Mo₂O₄(H₂O)₆]₂+ with a series of chelate ligands. These complexes are completed by two terminal oxygens arranged trans to one another and each ligand forms a chelate types. In Mo₂O₄(H₂O)₂L two H₂O coordinated at trans site of terminal oxgens. The prepared complexes have been characterized by elemental analysis, infrared spectra, electronic spectra, 1H nuclear magnetic resonance spectra, and thermal analysis(TG-DTA). In the potential range -0.00V to -1.00V at scan rate of 50mVs⁻¹, a cathodic peak at -0.83V ~ -0.88V (vs SCE) and an anodic peak at -0.54V ~ -0.88V (vs SCE) have been observed in aquous solution. The ratio of the cathodic to anodic current(Ipc/Ipa) is almost 2, we infer that redox is irreversible as dimer forms broken.