| ［Cd(CHZ)3］(ClO4)2的制备和分子结构研究 |
| A STUDY OF PREPARATION AND MOLECULAR STRUCTURE OF ［Cd(NH2NHCONHNH2)3］(ClO4)2 |
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| 摘要: 本文报道了高氯酸三碳酰肼合镉(Ⅱ)的制备方法和分子结构。该配合物结构式为［Cd(CHZ)3］(ClO4)2。晶体属单斜晶系，P21/n空间群。晶体学参数为：a=1.0281(1) nm, b=0.8617(1) nm, c=2.1360(1) nm,β=100.53°, V=1.8604(3) nm3; Z=4, Dc=2.076 g·cm-3, μ(Mo, Kα)=15.43 cm-1。经全矩最小二乘法对非氢原子坐标和温度因子进行修正。最终偏离因子R=0.0296。在该配合物中，碳酰肼(CHZ)分子作为双齿配体，由羰基氧原子和1位氮原子与Cd配位，形成五员平面螯合环，配合物分子中共有三个这样的螯合环，中心离子为六配位八面体构型；配合物的外界是两个高氯酸根离子，通过库仑力与内界结合在一起。 |
| 关键词: 高氯酸镉 碳酰肼 制备 分子结构 螯合物 |
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| Abstract: The preparation method and structure analysis results were obtained for the coordinate on compound of Cadmium perchlorate and carbohydrazide. The crystal and molecular structures were determined by the single-crystal X-ray diffraction method with a four-circle diffractometer. The coordinate compounds could be expressed in the formula of ［Cd(NH2NHCONHNH2)3］(ClO4)2. The compound is crystallized in monoclinic with space group P21/n. The unit cell parameters are as follows: a=1.0281(1) nm, b=0.8617(1) nm, c=2.1360(1) nm, β=100.53°, V=1.8604(3) nm3, Z=4, Dc=2.076 g·cm-3. With the method of full-matrix least-squares on F2, the final R is 0.0296. Carbohydrazide serviced as a bidentate, coordinates to cadmium cation with its oxygen atom and the first nitrogen atom, so that they formed a chelating ring of five members. There are three such rings in one molecular. The coordination number is six and its configuration is octahedral. The outer sphere are two perchlorate anions, which combined with inner sphere by hydrogen bond and static electricity. |
| Keywords: cadmium perchlorate carbohydrazide preparation molecular structure chelate |
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| 魏昭荣,张同来,吕春华,郁开北.［Cd(CHZ)3］(ClO4)2的制备和分子结构研究[J].无机化学学报,1999,15(4):482-486. |
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