Abstract
Mixed ligand oxidovanadium(IV) complexes VO(ox)(im)3·H2O (1), VO(ox)(4-mim)3 (2), K2[VO(ox)2(2-mim)]·2H2O (3) and [V2O2(edta)(phen)2]·11H2O (4) (H2ox = oxalic acid, H4edta = ethylenediaminetetraacetic acid, im = imidazole, 2-mim = 2-methylimidazole, 4-mim = 4-methylimidazole, and phen = 1,10-phenanthroline) have been obtained at room temperature and under hydrothermal condition respectively. 1–3 feature bidentate oxalate with two carboxy oxygen atoms, and the dimeric complex 4 contains hexadentate edta as bridging ligand. 1–4 have been fully characterized by elemental, thermogravimetric and single crystal X-ray structural analyses, as well as IR, UV–vis and EPR spectroscopies. Moreover, 1, 2 and 4 were tested for the catalytic degradations of methyl orange (MO) with H2O2.
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