Study of acid pyridine-3-carboxylic acid dodecatungstenphosphate of the composition (C6NO2H5)2H[PW12O40]•2H2O

被引：1

作者：

Kaziev, G. Z. ^{[1
]}

Kirichenko, O. A. ^{[1
]}

Stash, A. I. ^{[2
]}

Quinones, Saul H. ^{[3
]}

Solov'eva, E. A. ^{[1
]}

Chen, Y. S. ^{[4
]}

机构：

[1] Moscow State Pedag Univ, Moscow 119435, Russia

[2] Karpov Inst Phys Chem, Moscow, Russia

[3] UAM, Ascapotzalco, Mexico

[4] Univ Chicago, Chicago, IL 60637 USA

来源：

JOURNAL OF STRUCTURAL CHEMISTRY | 2014年 / 55卷 / 04期

基金：

美国国家科学基金会;

关键词：

heteropolycompounds; X-ray crystallography; physicochemical properties;

D O I：

10.1134/S002247661404012X

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Acid pyridine-3-carboxylic acid dodecatungstenphosphate (C6NO2H5)(2)H[PW12O40]center dot 2H(2)O is synthesized. The compound is studied by chemical analysis, IR spectroscopy, X-ray crystallography, and thermogravimetry. The compound is found to crystallize at 290 K in a hexagonal crystal system (space group ) (I) with the unit cell parameters: a = 33.015(6) , c = 12.010(2) , gamma = 120A degrees, V = 11337(4) (3), Z = 9. When the temperature decreases to 100 K, a phase transition is observed leading to an increase in symmetry to (II), with the unit cell parameters: a = 33.072(1) , c = 24.234(1) , gamma = 120A degrees, V = 22955(2) (3), Z = 18.

引用

页码：674 / 681

页数：8

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