Crystal structure determinations of Cs2NaCr(CN)6 and further compounds A2BM(CN)6 (A = Rb, Cs; B=Na, K, Rb, NH4; M = Cr, Mn, Fe, Co):: Tilting of octahedra and tolerance factor of cyano cryolites

被引：0
作者：
Peschel, S
Ziegler, B
Schwarten, M
Babel, D [1 ]
机构：
[1] Univ Marburg, Fachbereich Chem, D-35032 Marburg, Germany
[2] Univ Marburg, Wissensch Zentrum Mat Wissensch, D-35032 Marburg, Germany
来源：
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 2000年 / 626卷 / 07期
关键词：
chromium; manganese; iron; cobalt; hexacyanometallates(III); cyano cryolites;
D O I：
暂无
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The crystal structures of Cs2NaCr(CN)(6) (space group P2(1)/n, Z = 2; a = 763.2(1), b = 789.8(1), c = 1102.4(1) pm. beta = 90.09(1)degrees) and of 9 isostructural cyano cryolites A(2)BM(CN)(6) of the elements M = Cr, Mn, Fe, Co were determined by X-rays at single crystals. The results, including data from the literature, were studied with respect to the interdependence of radii resp, bond lengths and cyano bridge angles M-CN-B resp. tilting of [M(CN)(6)] and [BN6] octahedra: The average tilt angles kappa of the latter are within the range 13 degrees less than or equal to kappa less than or equal to 23 degrees and increase linearly if the modified tolerance factor t (of range 0,87 greater than or equal to t greater than or equal to 0,78) decreases.
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页码：1561 / 1566
页数：6
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