Syntheses, spectra and crystal structures of a series of Mo/S(O) complexes containing oxalate ligand

Abstract

Two Mo/S complexes: K₆[Mo₂O₂S₂(C₂O₄)₂-(ClPO₃)₂]°H₂O (1) and K₆[Mo₂O₃S(C₂O₄)₂(ClPO₃)₂]°3H₂O (2) containing oxalate ligand were prepared by the reaction of (NH₄)₂MoS₄ and potassium oxalate by adding a small amount of H₃PO₄ to adjust the value of pH in the system of methanol and water under an atmosphere of pure nitrogen at ambient temperature and characterized by means of elemental analysis, IR, and UV-Vis. Results of the analysis reveal that crystals of the complex 1 are orthorhombic, space group Pbcn, a=4.6370(2) nm, b=0.7549(2) nm, c=1.3888(4) nm, V=4.861(2) nm³, Z=8, M=945.49, Dc=2.58 g/cm³, μ=2.625 cm^-1, R=0.063, and wR=0.075. In addition, their spectral properties were also discussed.

Keywords

oxalate ligand, Mo/S(O) complex, spectral properties, crystal structure