Thermodynamic Properties of the Gaseous Gallium Molybdates and Tungstates

被引：8

作者：

Lopatin, S. I. ^{[1
]}

Shugurov, S. M. ^{[1
]}

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

机构：

[1] St Petersburg State Univ, Dept Chem, St Petersburg 198504, Russia

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 2009年 / 113卷 / 48期

关键词：

MOLECULAR-ORBITAL METHODS; BASIS-SETS; INFRARED-SPECTRA; TERNARY OXIDES; POTENTIALS; DENSITY; INDIUM; M2XO4; ATOMS;

D O I：

10.1021/jp903619g

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A number of gaseous oxyacid salts have been identified by Knudsen effusion mass spectrometry by vaporizing Ga2O3 from molybdenum and tungsten cells. The stability of gaseous molecules Ga2MoO4, Ga2WO4, Ga2Mo2O7, and Ga2W2O7 was deduced from the measurements. The structures and molecular parameters of all salts investigated were obtained using quantum chemical calculations. On the basis of equilibrium constants measured for gas-phase reactions, the standard formation enthalpies were determined to be -827 +/- 26, -843 +/- 26, -1578 +/- 32, and -1525 +/- 34 kJ.mol(-1) for Ga2MoO4, Ga2WO4, Ga2MO2O7, and Ga2W2O7, respectively.

引用

页码：13469 / 13474

页数：6

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