Crystal structure of SrZn(OH)(4)center dot H2O

被引：6
|
作者：
Stahl, R [1 ]
Jacobs, H [1 ]
机构：
[1] UNIV DORTMUND,FACHBEREICH CHEM,LEHRSTUHL ANORGAN CHEM 1,D-44221 DORTMUND,GERMANY
来源：
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 1997年 / 623卷 / 08期
关键词：
strontium tetrahydroxozincate monohydrate; crystal structure refinement;
D O I：
10.1002/zaac.19976230816
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Colorless crystals of SrZn(OH)(4) . H2O are obtained by electrochemical oxidation of Zn in a zinc/iron pair in an aqueous ammonia solution saturated with strontium hydroxide. The X-ray crystal structure determination was now successful including all hydrogen positions: P (1) over bar, Z = 2, a = 6.244(1) Angstrom, b = 6.3000(8) Angstrom, c = 7.701(1) Angstrom, alpha = 90.59(1)degrees, beta = 112.56(2)degrees, gamma = 108.66(2)degrees, N(F-o(2) greater than or equal to 3 sigma F-o(2)) = 1967, N(Var.) = 84, R/R-w = 0.020/0.024. In SrZn(OH)(4) . H2O Zn2+ is tetrahedrally coordinated by four OH--ions while Sr2+ has 6 OH- and one H2O as neighbours. The polyhedra around Sr2+ are connected to chains which are linked three-dimensionally by isolated tetrahedra [Zn(OH)(4)]. Hydrogen bonds between H2O as donor and OH- are characterized by raman spectroscopy.
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收藏
页码：1273 / 1276
页数：4
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