| 离子对电荷转移配合物[NO2Py]x[Co（mnt）2]的合成、光谱和磁性表征 |
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| 作者单位： | 张群（安庆师范学院化学系,安庆,246011）;任小明（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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| 摘 要： | 合成了两种新的离子对电荷转移配合物NO2Py]xCo(mnt)2],(NO2Py=1-(4-ritrobenzyl)pyridinium;mnt=maleonitriledithiolate;x=1or2时分别对应配合物2和1),并用元素分析和红外光谱、电喷雾质谱和固体反射电子光谱等谱学方法对两种配合物进行了表征.两种配合物在77K到300K范围内的变温磁化率结果表明,配合物2是抗磁性物质,经Pascal′s常数校正后的配合物1的磁化率遵循改进的Bleaney-Bowers方程,实验值和理论计算值能很好的吻合,非线性最小平方二乘法拟合所得的最佳拟合参数为g=2.392,2J/k=5.9K和θ=-4.9K,一致性因子R=7.20×10-9(R=∑(χobsi-χcalcdi)2/∑(χobsi
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| 关 键 词： | 合成 光谱表征 磁性 离子 转移配合物 钴 [NO2Py]x[Co（mnt）2] |
| 修稿时间： | 2001年2月12日 |
Synthesis ,Spectra and Magnetic Properties of Ion-Pair Charge Transfer Complexes
Bis ( 1- (4-Nitrobenzyl) Pyridinium)Bis (Maleonitriledithiolato) Cobaltate ( |
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| Authors: | Q Zhang X Ren |
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| Institution: | Department of Chemistry, Anqing Normal College, 246011 Anqing. |
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| Abstract: | Two new ion-pair charge transfer complexes, NO2Py]xCo(mnt)2](NO2Py = 1-(4-nitrobenzyl)pyridinium; mnt = male-onitriledithiolate; x = 1 or 2 for complex 2 or 1), were synthesized and characterized by element analysis(EA), electronic spray mass spactrum(ES-MS), infrared spectrum (IR) and reflection electrolic spectra. Variable temperature magnetic susceptibilities of the complexes in range of 77-300 K indicate that complex 2 exhibits diamagnetivity complex 2, and the magnetic behavior for complex 1 obeys modification Bleaney-Bowers equation, that is, chi m = Ng2 mu B2/3k(T-theta)]1 + (1/3)exp(-2J/kT)]-1. The best fitting gives a good results: g = 2.392, 2J/k = 5.9 K, theta = -4.9 K and agreement factor R = 7.20 x 10(-9) (R = sigma (chi (i)obs-chi (i)calcd)2/sigma (chi (i)obs)2). |
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