Crystal structure of CaZn2(OH)(6)center dot 2 H2O

被引：15
|
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：
calcium hexahydroxodizincate dihydrate; synthesis; crystal structure;
D O I：
10.1002/zaac.19976230819
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The electrochemical oxidation of zinc in a zinc/ iron-pair leads in an aqueous NH3 solution of calciumhydroxide at room temperature to colourless crystals of CaZn2(OH)(6) . 2 H2O. The X-ray structure determination was now successful including all hydrogen positions. P2(1)/c, Z = 2, a = 6.372(1) Angstrom, b = 10.940(2) Angstrom, c = 5.749(2) Angstrom, beta = 101.94(2)degrees. N(F-o(2) greater than or equal to 3 sigma F-o(2)) = 809, N(Var.) = 69, R/R-w = 0.011/0.012 The compound CaZn2(OH)(6) . 2 H2O contains Zn2+ in tetrahedral coordination by OH- and Ca2+ in octahedral coordination by four OH- and two H2O. The tetrahedra around Zn2+ form corner sharing chains, three-dimensionally linked by isolated polyhedra around Ca2+. Weak hydrogen bridge bonds result between H2O as donor and OH-.
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页码：1287 / 1289
页数：3
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