| A Cu(II) Complex with IM-MeImz-κ~2 N,O Mode in [Cu(IM-MeImz)_2]·(SCN)_2: Synthesis, Crystal Structure and Magnetic Properties |
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| 引用本文： | 王玉芳,王利亚.A Cu(II) Complex with IM-MeImz-κ~2 N,O Mode in [Cu(IM-MeImz)_2]·(SCN)_2: Synthesis, Crystal Structure and Magnetic Properties[J].结构化学,2007(12). |
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| 作者姓名： | 王玉芳 王利亚 |
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| 作者单位： | College of Chemistry and Chemical Engineering Luoyang Normal University，College of Chemistry and Chemical Engineering Luoyang Normal University，Luoyang 471022 China Luoyang 471022 China New Materials and Function Coordination Chemistry laboratory Qingdao University of Science and Technology，Qingdao 266042，China |
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| 基金项目： | This work was supported by the N N S F of China (No. 20471026)，the Natural Science Foundation of Henan Province (No. 0311021200) |
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| 摘 要： | A new copper(II) compound with imino nitroxide radicals Cu(IM-MeImz)2]?(SCN)2 (IM-meImz =2-(5-methylimidazol-4-yl)-4,4,5,5-tetramethyl-2-imidazoline-1-oxyl) has been synthesized and characterized structurally and magnetically. It crystallizes in monoclinic, space group P21/c with a = 9.3604(7), b = 10.3012(7), c = 16.6684(12) , β = 105.0290(10)o, V = 1552.25(19) 3, C24H34CuN10O2S2, Mr = 622.27, Z = 2, Dc = 1.331 g/cm3, μ(MoKα) = 0.876 mm-1, F(000) = 650, the final R = 0.0374 and wR = 0.1079. X-ray analysis demonstrates that the IM-MeImz ligand is coordinated to the copper(II) ion as an unusual didentate chelate with a κ2 N(MeImz),O(IM) mode in the complex. The square-planar coordination sites at Cu(II) are occupied by two O and two N atoms from the imino nitroxide radicals. The complex molecules are connected as a onedimensional polymer structure by intermolecular interactions. Magnetic measurements show that there are intramolecular antiferromagnetic interactions between the Cu(II) ion and radicals.
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| 关 键 词： | copper(II) complex nitronyl nitroxide radical κ~2-N O unusual mode antiferromagnetic interactions |
A Cu(II) Complex with IM-MeImz-κ~2 N,O Mode in [Cu(IM-MeImz)_2]·(SCN)_2: Synthesis,Crystal Structure and Magnetic Properties |
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| Abstract: | A new copper(II) compound with imino nitroxide radicals Cu(IM-MeImz)2]?(SCN)2 (IM-meImz =2-(5-methylimidazol-4-yl)-4,4,5,5-tetramethyl-2-imidazoline-1-oxyl) has been synthesized and characterized structurally and magnetically. It crystallizes in monoclinic, space group P21/c with a = 9.3604(7), b = 10.3012(7), c = 16.6684(12) , β = 105.0290(10)o, V = 1552.25(19) 3, C24H34CuN10O2S2, Mr = 622.27, Z = 2, Dc = 1.331 g/cm3, μ(MoKα) = 0.876 mm-1, F(000) = 650, the final R = 0.0374 and wR = 0.1079. X-ray analysis demonstrates that the IM-MeImz ligand is coordinated to the copper(II) ion as an unusual didentate chelate with a κ2 N(MeImz),O(IM) mode in the complex. The square-planar coordination sites at Cu(II) are occupied by two O and two N atoms from the imino nitroxide radicals. The complex molecules are connected as a onedimensional polymer structure by intermolecular interactions. Magnetic measurements show that there are intramolecular antiferromagnetic interactions between the Cu(II) ion and radicals. |
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| Keywords: | copper(II) complex nitronyl nitroxide radical κ~2-N O unusual mode antiferromagnetic interactions |
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