Remarkable structural transformation of [Zn(tza)2] during recrystallization, syntheses and crystal structures of [M(tza)2] (M = Zn, Cd, Mn, Co; Htza = tetrazole-1-acetic acid)

被引:77
作者
Dong, Wen-Wen [1 ,2 ]
Zhao, Jun [1 ,2 ]
Xu, Li [1 ]
机构
[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Fujian, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
关键词
D O I
10.1021/cg7012182
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The substitution reactions of M(CH3CH2CO2)(2) and Htza afford the crystalline precipitates-of [Cd(tza)(2)] (1), [Mn(tza)(2)] (2), [Co(tza)(2)] (3), and beta-[Zn(tza)(2)] (5). The recrystallization of 5 leads to the formation of alpha-[Zn(tza)(2)] (4). X-ray powder diffraction of 1-5 reveal that 1, 2, 3, and 5 are allomers, but 4 and 5 are isomers, revealing the unprecedented structural transformation during the process of recrystallization. Compounds 1-4 have been characterized by X-ray single-crystal crystallography, IR, and magnetism analysis. Structural analyses and comparison of 1-4 detail the structural evolution of from beta-[Zn(tza)(2)] (5) to alpha-[Zn(tza)(2)] (4) and possible driving force has been proposed. The interactions between the Mn-II ions of 2 have been observed as weakly antiferromagnetic.
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页码:2882 / 2886
页数:5
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