Synthesis and structures of two cobalt complexes [NaCoI(NTA)(H2O)]n and NH4[CoIII(IDA)2]•2H2O

被引：6
|
作者：
Zhang, Quan-Zheng [1 ]
Lu, Can-Zhong [1 ]
Yang, Wen-Bin [1 ]
机构：
[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Peoples R China
来源：
JOURNAL OF COORDINATION CHEMISTRY | 2006年 / 59卷 / 08期
基金：
中国国家自然科学基金;
关键词：
cobalt; nitrilotriacetic acid; iminodiacetic acid; crystal structure;
D O I：
10.1080/00958970500412081
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Two cobalt complexes [NaCoII(nta)(H2O)(])n (H(3)nta nitrilotriacetic acid) (1) and NH4[Co-III(ida)(2)] center dot 2H(2)O (H(2)ida iminodiacetic acid) (2) have been synthesized and characterized by single-crystal X-ray diffraction analysis. Compound 1 crystallizes in the orthorhombic system, space group P2(1)2(1)2(1) with a=7.9770(12) angstrom, b=9.7613(15) angstrom, c=12.1945(18) angstrom, V=949.5(2) angstrom(3), Z=4, and R-1 0.0705 for 1597 observed reflections. Compound 2 crystallizes in the monoclinic system, space group P2(1)/c with a=5.1801(3) angstrom, b=11.2073(6) angstrom, c=12.2891(7) angstrom, V=707.09(7) angstrom(3), Z=2, and R-1=0.0349 for 1143 observed reflections. In compound 1, the Co is coordinated by a nitrogen and five oxygen atoms in a distorted octahedral geometry {CoNO5}, and the Na is coordinated by one water molecule and four carboxyl oxygen atoms in slightly distorted square pyramidal geometry. The entire structure shows a three-dimensional network. In compound 2, Co atom is equatorially coordinated by two ida ligands in a distorted octahedral geometry {CoN2O4}. The discrete [Co(ida)(2)](2-) anions are linked by hydrogen bonding to a three-dimensional supramolecular network.
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收藏
页码：837 / 844
页数：8
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