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化学学报
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化学学报 ›› 1989, Vol. 47 ›› Issue (3): 270-275. 上一篇    下一篇

研究论文

堆积模型及其应用 I: 三氯化镧尿素配合物[LaCl2(urea)6].Cl分子结构的推测与测定

朱占洋;张大川;林政炯;李朴;钟爱珍;王今今;张承曾;魏毅;徐英庭;沈天骥;郭敖凌;李醒夫   

  1. 中国科学院生物物理研究所;北京化工学院应用化学系;中国科学院高能物理研究所
  • 发布日期:1989-03-15

Cone packing model and its applications I: Molecular structure of dichlorohexaurealanthanium chloride [LaCl2(urea)6].Cl prediction and structural characterization

ZHU ZHANYANG;ZHANG DACHUAN;LIN ZHENGJIONG;LI PU;ZHONG AIZHEN;WANG JINJIN;ZHANG CHENGZENG;WEI YI;XU YINGTING;SHEN TIANJI;GUO AOLING;LI XINGFU   

  • Published:1989-03-15

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本根据堆积模型推测LaCl3(urea)6的实际结构为[LaCl2(urea)6]^+Cl^-, 培养了这一化合物单晶, 进行了结构测定. 本文报道了有关结果.

关键词: 氯化物, 分子结构, 尿素, 堆积, 结构分析, 镧络合物

The crystal and mol. structure of the title compound was determine The crystals are orthorhombic with space group Pna21; a 1.524(1), b 0.922(1), c 1.611(1), d.(obsd.) = 1.79 and d.(calcd.) = 1.83 for Z = 4. The structure was solved by heavy atom method and refined by least squares to R = 0.0333 and Rw = 0.0282 for 2136 reflections. A structure is a distorted antiprism with 2 Cl- and 6 urea coordinated to La. The core packing model was used to explain its mol. structure.

Key words: CHLORIDE, MOLECULAR STRUCTURE, UREA, ACCUMULATION, STRUCTURAL ANALYSIS, LANTHANUM COMPLEX

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