| Synthesis, characterization and magnetism of μ-chloranilato bi-nuclear chromium (III) complexes |
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| 引用本文： | 李延团,焉翠蔚,陈勇,曾宪诚,廖代正.Synthesis, characterization and magnetism of μ-chloranilato bi-nuclear chromium (III) complexes[J].中国化学,2000,18(4):555-560. |
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| 作者姓名： | 李延团 焉翠蔚 陈勇 曾宪诚 廖代正 |
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| 作者单位： | Department of Chemistry，Qufu Normal University，Qufu，Shandong 273165，China Department of Chemistry，Sichuan University，Chengdu，Sichuan 610064，China，Department of Chemistry，Qufu Normal University，Qufu，Shandong 273165，China，Department of Chemistry，Sichuan University，Chengdu，Sichuan 610064，China，Department of Chemistry，Sichuan University，Chengdu，Sichuan 610064，China，Department of Chemistry，Nankai University，Tianjin 300071，China |
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| 基金项目： | Project supported by the Natural Science Foundation of Shandong Province (No. Q99B12) and the National Natural Science Foundation of China (No. 29873031). |
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| 摘 要： | Five new chloranilato-bridged binuclear chromium (III) complexes have been synthesized and identified as Cr2(CA)L4]-(ClO4)4L denotes 5-methyl-1,10-phenanthroline (Me-phen); 2,9-dimethyl-1, 10-phenanthroline ( Me2-phen); 5-chloro-1,10-phenanthroline(Cl-phen); diaminoethane (en) or 1,3-diaminopropane (pn)], where CA represents the dianion of chloranilic acid. Based on elemental analyses, molar conductivity and magnetic moment of room-temperature measurements, and IR and electronic spectral studies, it is proposed that these complexes have CA-bridged structures and consist of two chromium (III) ions, each in an octahedral environment. The complexes Cr2(CA)(Me-phen)4](ClO4)4(1) and Cr2(CA)(Me2-phen)4](ClO4)4(2) were further characterized by variable temperature (4.2-300 K) magnetic susceptibility measurements and the observed data were successfully simulated by the equation based on the spin Hamiltonian operator, , giving the exchange parameter J = -7.8 cm-1 for (1) and J= -6.5 cm*1 for (2). This result
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| 关 键 词： | Chloranilato-bridge binuclear chromium(Ⅲ) complexes magnetism |
Synthesis,characterization and magnetism of μ‐chloranilato binuclear chromium (III) complexes |
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| LI,Yan-Tuan VAN,Cui-Wei CHEN,YongZENG,Xian-Cheng LIAO,Dai-Zheng.Synthesis,characterization and magnetism of μ‐chloranilato binuclear chromium (III) complexes[J].Chinese Journal of Chemistry,2000,18(4):555-560. |
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| Authors: | LI Yan-Tuan VAN Cui-Wei CHEN YongZENG Xian-Cheng LIAO Dai-Zheng |
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| Institution: | LI,Yan-Tuan VAN,Cui-Wei CHEN,YongZENG,Xian-Cheng LIAO,Dai-Zheng Department of Chemistry,Qufu Normal University,Qufu,Shandong 273165,China Department of Chemistry,Sichuan University,Chengdu,Sichuan 610064,China Department of Chemistry,Nankai University,Tianjin 300071,China |
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| Abstract: | Five new chloranilato-bridged binuclear chromium (III) complexes have been synthesized and identified as Cr2(CA)L4]-(ClO4)4L denotes 5-methyl-1,10-phenanthroline (Me-phen); 2,9-dimethyl-1, 10-phenanthroline ( Me2-phen); 5-chloro-1,10-phenanthroline(Cl-phen); diaminoethane (en) or 1,3-diaminopropane (pn)], where CA represents the dianion of chloranilic acid. Based on elemental analyses, molar conductivity and magnetic moment of room-temperature measurements, and IR and electronic spectral studies, it is proposed that these complexes have CA-bridged structures and consist of two chromium (III) ions, each in an octahedral environment. The complexes Cr2(CA)(Me-phen)4](ClO4)4(1) and Cr2(CA)(Me2-phen)4](ClO4)4(2) were further characterized by variable temperature (4.2-300 K) magnetic susceptibility measurements and the observed data were successfully simulated by the equation based on the spin Hamiltonian operator, , giving the exchange parameter J = -7.8 cm-1 for (1) and J= -6.5 cm*1 for (2). This result indicates that there is weak antiferromagnetic spin-exchange interaction between the two chromium (III) ions within each molecule. |
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| Keywords: | Chloranilato‐bridge binuclear chromium (III) complexes magnetism |
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