Crystal structure of AgPF6 and AgAsF6 at ambient temperatures

被引：11

作者：

Hagiwara, R ^{[1
]}

Kitashita, K

Ito, Y

Tamada, O

机构：

[1] Kyoto Univ, Dept Fundamental Energy Sci, Sakyo Ku, Kyoto 6068501, Japan

[2] Kyoto Univ, Grad Sch Human & Environm Study, Sakyo Ku, Kyoto 6068501, Japan

来源：

SOLID STATE SCIENCES | 2000年 / 2卷 / 02期

关键词：

silver hexafluorophosphate; silver hexafluoroarsenate; AgPF6; AgAsF6; structure; disorder;

D O I：

10.1016/S1293-2558(00)00124-2

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

AgPF6 dissolved in anhydrous HF crystallizes in space group Fm (3) over bar m with a(0) = 755.08(7) pm, V = 4.3051(12) x 10(8) pm(3) at 25 degrees C, z = 4. The structure was determined with the aid of Fourier map and refined to conventional R and Rw values of 0.0812 and 0.0644, respectively. The Ag+ and PF6- ions form a rock salt structure with a threefold orientational disorder of the anion. The distortion of PF6- was scarcely observed. The P-F(1) and P-F(2) bond lengths are 156 and 159 pm, respectively. AgAsF6 prepared in the same manner is isostructural with AgPF6; a(0) = 775.48(21) pm, V = 4.6634(37) x 10(8) pm(3) at 25 degrees C, z = 4, R = 0.0707, Rw = 0.0495. (C) 2001 Editions scientifiques et medicales Elsevier SAS. All rights reserved.

引用

页码：237 / 241

页数：5

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