| [M(phen)3][Ni(mnt)2](M2+=Ni2+，Fe2+；phen=1，10-菲咯啉，mnt2-=马来二腈二硫烯)离子对配合物的合成、晶体结构、电子光谱和磁性质 |
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| 引用本文： | 陈选荣,盛小利,袁国军,任小明. [M(phen)3][Ni(mnt)2](M2+=Ni2+，Fe2+；phen=1，10-菲咯啉，mnt2-=马来二腈二硫烯)离子对配合物的合成、晶体结构、电子光谱和磁性质[J]. 无机化学学报, 2012, 28(9): 1919-1925 |
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| 作者姓名： | 陈选荣 盛小利 袁国军 任小明 |
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| 作者单位： | 1. 南京工业大学应用化学系,南京,210009
2. 南京工业大学应用化学系,南京210009;南京大学配位化学研究所,配位化学国家重点实验室,南京210093 |
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| 基金项目： | 国家自然科学基金(No.21071080)资助项目 |
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| 摘 要： | 本文制备了2种新的离子对配合物[M(phen)3][Ni(mnt)2](phen=1,10-菲咯啉,mnt2-=马来二腈二硫烯;M2+=Ni2+,1;Fe2+,2),并进行了结构表征。2种离子对配合物晶体的空间群都为P21/n,具有类似的晶胞参数和堆积结构。紫外可见-近红外光谱显示在近红外区域没有出现明显的吸收峰。在2到400 K的温度范围内,化合物1表现居里-外斯型的顺磁性行为,并在磁性[Ni(phen)3]2+离子之间存在弱的反铁磁作用,而且在八面体配位环境下Ni2+离子自旋基态S=1。化合物2在40 K向上显示抗磁性,意味[Fe(phen)3]2+离子处于低自旋态。低于40 K时,弱居里尾巴可能是由于小部分顺磁性[Ni(mnt)2]-杂质导致的。
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| 关 键 词： | 双-(马来二腈二硫烯)镍配合物 晶体结构 电子光谱 磁性质 |
Syntheses, Crystal Structures, Electronic Spectra and Magnetic Properties for New Ion-Pair Complexes of [M(phen)3][Ni(mnt)2] (M2+=Ni2+, Fe2+; phen=1,10-phenathroline, mnt2-=maleonitriledithiolate) |
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| CHEN Xuan-Rong,SHENG Xiao-Li,YUAN Guo-Jun and REN Xiao-Ming. Syntheses, Crystal Structures, Electronic Spectra and Magnetic Properties for New Ion-Pair Complexes of [M(phen)3][Ni(mnt)2] (M2+=Ni2+, Fe2+; phen=1,10-phenathroline, mnt2-=maleonitriledithiolate)[J]. Chinese Journal of Inorganic Chemistry, 2012, 28(9): 1919-1925 |
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| Authors: | CHEN Xuan-Rong SHENG Xiao-Li YUAN Guo-Jun REN Xiao-Ming |
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| Affiliation: | Department of Applied Chemistry, College of Science, Nanjing University of Technology, Nanjing 210009, China,Department of Applied Chemistry, College of Science, Nanjing University of Technology, Nanjing 210009, China,Department of Applied Chemistry, College of Science, Nanjing University of Technology, Nanjing 210009, China and Department of Applied Chemistry, College of Science, Nanjing University of Technology, Nanjing 210009, China; Coordination Chemistry Institute & State Key Laboratory, Nanjing University, Nanjing 210093, China |
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| Abstract: | Two new bimetallic ion-pair compounds, [M(phen)3][Ni(mnt)2] (phen=1,10-phenanthroline, mnt2-=maleonitriledithiolate; M=Ni2+, 1; Fe2+, 2), have been prepared and characterized structurally. Two ion-pair crystals, crystallizing in monoclinic space group P21/n, have quite similar cell parameters and packing structures, and two compounds do not show the absorption in the near-IR region. Compound 1 exhibits the Curie-Weiss-type paramagnetic behavior in the temperature range 2~400 K and the existence of weakly antiferromagnetic coupling between magnetic [Ni(phen)3]2+ ions and the Ni2+ ion in the octahedral coordination sphere has an S=1 ground state. While 2 displays the diamagnetic behavior above ~40 K with a weak Curie-Weiss type paramagnetic tail below 40 K, indicated the Fe2+ center in the [Fe(phen)3]2+ ion having a low-spin state. The weak paramagnetic behavior in the low-temperature region results from a trace amount of [Ni(mnt)2]- species. CCDC: 860552, 1; 860551, 2. |
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| Keywords: | bis(maleonitriledithiolate)nickelate crystal structure electronic spectra magnetic property |
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