| 自旋交叉配合物[Fe(dpq)2(NCS)2]·1.5H2O的合成和磁性研究 |
| Syntheses and Magnetic Properties of a Spin Crossover Complex [Fe(dpq)2(NCS)2]·1.5H2O |
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| 摘要: 自旋交叉配合物的研究是分子磁化学中的一个重要领域,并已引起人们的普遍关注。近期我们合成了一个新的配体dpq(dpq=dipyrazine[2,3f:2,3h]quinoxaline )和新的自旋交叉配合物[Fe(dpq)2(NCS)2]·1.5H2O。通过元素分析、红外光谱、质谱、核磁共振、紫外光谱等方法对其结构进行了表征。变温磁化率和穆斯堡尔谱学的研究表明标题化合物是一个新颖的自旋交叉配合物,而且显示出不常见的15K回滞宽度,在降温时伴有一小台阶。通过对比发现,配体的共轭性在自旋交叉配合物中的影响是非常重要的。 |
| 关键词: 自旋交叉 磁化率 配体dpq M?ssbauer谱 |
| 基金项目: |
| Abstract: The study of the spin crossover complexes is an important field of magnetochemistry and such compounds have at-tracted much attention. A new ligand dpq(dpq=dipyrazine[3,2-f][2′,3′-h]quinoxaline) and a new spin crossover complex [Fe(dpq)2(NCS)2]·1.5H2O were synthesized newly, and characterized by elemental analysis, IR, MS, 1H NMR and UV-vis spectroscopy. The studies of magnetic properties and M?ssbauer spectroscopy indicate that [Fe(dpq)2(NCS)2]·1.5H2O is a novel spin crossover complex, showing 15K hysteresis loop and a step transition on temperature cooling. The discussions concerning the behavior state that the conjugation of ligand plays an im-portant role in the spin crossover. |
| Keywords: spin crossover magnetic susceptibilities ligand dpq M?ssbauer spectroscopy |
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| 陶建清,施卫忠,庄晓,余智,游效曾.自旋交叉配合物[Fe(dpq)2(NCS)2]·1.5H2O的合成和磁性研究[J].无机化学学报,2002,18(3):255-258. |
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