| Synthesis,Crystal Structure and Magnetic Properties of an Oxalato-bridged Dinickel(Ⅱ) Complex with Nitronyl Nitroxide Radicals |
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| 作者姓名： | 王玉芳 鞠丰阳 王利亚 |
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| 作者单位： | Department;Chemistry;College;Chemical;Engineering;Luoyang;Normal;university; |
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| 基金项目： | supported by the National Natural Science Foundation of China (Nos 20471026 and 20771054);;the Natural Science Foundation of Henan Province (No 0311021200) |
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| 摘 要： | A new oxalato-bridged dinickel(Ⅱ) complex [Ni2(NIT-MeImz)4(C2O4)](Ac)2·8H2O has been synthesized and characterized structurally as well as magnetically.It crystallizes in monoclinic,space group C2/c with a=24.608(4),b=21.399(3),c=17.992(3),β=131.680(2)°,V=7076(2)3,C50H86N16Ni2O24,Mr=1412.77,Z=4,Dc=1.326 g/cm3,μ(MoKα)=0.614 mm-1,F(000)=2984,R=0.0751 and wR=0.1791 for 2956 observed reflections with Ⅰ2σ(Ⅰ).X-ray analysis reveals that the crystal structure consists of [Ni2(NIT-MeImz)4(C2O4)]2+ moiety and two Ac-anions.Each nickel(Ⅱ) ion is six-coordinated with a distorted octahedral geometry:two nitrogen atoms and two oxygen atoms from NIT-MeImz together with two other oxygen atoms from the oxalato ion.The 2-D net structure is formed and arranged through intermolecular H-bonding interactions.Magnetic measurements show antiferromagnetic interactions for this complex.
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| 关 键 词： | 草酸根桥 晶体结构 配合物 氮氧自由基 合成 磁性质 单斜晶系 H2O |
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