Synthesis, spectral and X-ray structural characterization of [cis-MoO2(L)(solv)] (L=salicylidene salicyloyl hydrazine) and its use as catalytic oxidant
摘要:
The synthesis and characterization of cis-[MoO2(L) (solv)] [L = salicylidene salicyloyl hydrazine and solvent=H2O/MeOH) is described. The tridentate Schiff base ligand was obtained by the condensation of salicylaldehyde and salicylic acid hydrazide in 1:1 ratio. The dioxomolybdenum complex was isolated from 1:1 reaction mixture containing the Schiff base ligand and MoO2(acac)(2). The orange colored, non-electrolytic and diamagnetic compound was characterized by elemental analyses, spectroscopic techniques (IR,H-1 NMR and UV-Vis), and cyclic voltammetry. The molecular structure was determined using crystals obtained from methanol, confirmed the formula cis-MoO2(L)(CH3OH) with triclinic P-1 space group. The Mo is coordinated by two cis terminal Os, ONO from the ligand and O of methanol. The oxo-transfer reaction from cis-[MoO2(L)(solv)] to PPh3, is reported. (C) 1999 Elsevier Science Ltd. All rights reserved.