| Studies on the synthesis and magnetic property of binuclear oxovanadium(Ⅳ) complexes ridged by chloranilato group |
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| 引用本文： | 李延团,焉翠蔚,廖代正.Studies on the synthesis and magnetic property of binuclear oxovanadium(Ⅳ) complexes ridged by chloranilato group[J].中国化学,1998(2). |
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| 作者姓名： | 李延团 焉翠蔚 廖代正 |
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| 作者单位： | Department of Chemistry，Qufu Normal University，Qufu，Shandong 213165，China，Department of Biology，Qufu Normal University，Qufu，Shandong 273165，China，Department of Chemistry，Nankai University，Tianjm 300071，China |
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| 基金项目： | Project supported by the Natural Science Foundation of Shandong Province，the National Natural Science Foundation of China |
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| 摘 要： | Six novel oxovanadium(IV) binuclear complexes have been synthesized and characterized,namely,(VO)2(CA)La]SO4 L denotes 5-methyl-l,10-phenanthroline (Me-phen);2,9-dimethyl-1,10-phenanthroline (Me2-phen); 5-chloro-l,10-phenanthroline (Cl-phen); diaminoethane (en); 1,3-diaminopropane (pn) and 1,2-diaminopropane (ap) respectively.],where CA represents the dianion of chloranilic acid.Based on elemental analyses,molar conductivity and room temperature magnetic moment measurements,IR and electronic spectral studies,it is proposed that these complexes have CA-bridged structures and consist of two vanadium(IV) ions in a square-pyramidal environment.The complexes (VO)2(CA)(Me-phen)2]SO4 (1) and (VO)2(CA)(Me2-phen)2]SO4 (2) were characterized by variable temperature magnetic susceptibility measurements (4~300 K) and the observed data were fitted to the modified Bleaney-Bowers equation by the least-squares method,giving the exchange integral J=-15.8 cm-1 for 1 and J=-10.6 cm-1 for 2.This result indicates that t
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| 关 键 词： | μ-Chloranilato-bridge oxovanadium(Ⅳ) binuclear complex magnetic property |
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