| 4-羟基吡啶-2，6-二羧酸配体构筑的环状四核镉配合物的水热合成、晶体结构及性质研究(英文) |
| Hydrothermally Synthesis, Crystal Structure and Properties of a Cyclic Tetranuclear Cadmium Complex Based on 4-Hydroxypyridine-2,6-dicarboxylic Acid |
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| 摘要: 在水热条件下合成了一个金属镉配合物[Cd4(cam)4(phen)4]·4H2O(H2cam=4-羟基吡啶-2，6-二羧酸，phen=1，10-邻菲咯啉)，并用元素分析、红外光谱、X-射线单晶衍射、热重分析和荧光分析对其进行了表征。晶体结构表明：该配合物属于单斜晶系，P21/c空间群，晶胞参数为：a=1.421 61(10) nm，b=1.946 42(13) nm，c=1.439 66(10) nm，β=115.385 0(10)°。每个CdⅡ离子七配位呈变形五角双锥几何构型，两对CdⅡ离子与4个(cam)2-离子相连形成了环状四核结构。相邻的四核单元通过氢键的识别作用形成二维超分子网；氢键和π…π堆积作用进一步将其扩展为三维超分子结构。 |
| 关键词: 镉配合物 晶体结构 水热合成 荧光 |
| 基金项目: |
| Abstract: A cadmium complex [Cd4(cam)4(phen)4]·4H2O (H2cam=4-hydroxypyridine-2,6-dicarboxylic acid hydrate, phen=1,10-phenanthroline) has been hydrothermal synthesized and structurally characterized by elemental analyses, thermal stability analysis, IR and single-crystal X-ray diffraction analyses. Crystal structural analysis reveals that it crystallizes in monoclinic system, space group P21/c, a=1.421 61(10) nm, b=1.946 42(13) nm, c=1.439 66(10) nm, β=115.385 0(10)°. The CdⅡ ion is seven-coordinate with a slightly distorted pentagonal bipyramid geometry. Two pairs CdⅡ ions joined with four (cam)2- ions to form a cyclic tetranuclear structure. The neighboring tetranuclear units are linked into 2D supramolecular network through hydrogen bonding interaction. Hydrogen bonding and π…π stacking interactions contact the 2D network to form 3D supramolecular structures. CCDC: 820965. |
| Keywords: cadmium complex crystal structure hydrothermal synthesis luminescence |
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| 陈小利,乔亚莉,崔华莉,霍涌前.4-羟基吡啶-2，6-二羧酸配体构筑的环状四核镉配合物的水热合成、晶体结构及性质研究(英文)[J].无机化学学报,2012,28(10):2257-2263. |
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