| 二乙三胺五乙酸锑异构体的晶体结构 |
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| 引用本文： | 周衡南,卢云锦.二乙三胺五乙酸锑异构体的晶体结构[J].结构化学,1993,12(3):233-236. |
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| 作者姓名： | 周衡南 卢云锦 |
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| 作者单位： | 南京大学物理系，南京大学现代分析中心 南京 210008，南京 210008 |
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| 摘 要： | 由氨三乙酸与亚锑酸直接制得的二乙三胺五乙酸锑异构体晶体结构,属正交晶系,空间群P2_12_12_1,a=6.889(2),b=14.105(1),c=20.239(3),V=1966.6,Z=4,D_c=1.851g/cm~3,M_r=548.1,F(000)=1104,μ(MoKα)=14.8cm~(-1)。2573个可观察衍射参与最小二乘修正,最终偏差因子R=0.047,R_w=(ω=σ~(-2))=0.056。 结构测定结果表明:锑离子与二乙三胺五乙酸同侧的两个羧基和中间的羧基上的三个氧原子及两个氮原子配位,它们与Sb的孤对电子构成变形的四方双锥。
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| 关 键 词： | 锑有机化合物 晶体结构 异构体 |
The Crystal Structure of Isomer of Antimonous Diethylene-triaminopentaacetate |
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| Abstract: | The crystal of isomer of antimonous diethylene-triaminopentaacetate (C14H20O10N3Sb·2H2O) is the orthorhombic, space group P212121, with cell parameters, a=6. 889 (2), b = 14-105(1), c-=20. 239(3) A. and Z=4.The structure has been solved and refined to R=0. 047. The result of structure determination indicated that the antimonous ions coordinated by three O atoms and two N atoms of diethy-lene-triaminopantaacetate ligand. Those oxygen atoms the nitrigen atoms and lone pair valence electrons of the Sb atom form a distorted tetragonal-dipyramid. |
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