THE ALTERNATE KEGGIN ION - A THEORETICAL-STUDY OF THE STABILITY FACTORS FOR THE BETA-KEGGIN ION IN COMPARISON WITH THE CORRESPONDING ALPHA-KEGGIN ION

被引：16

作者：

WANG, SH ^{[1
]}

JANSEN, SA ^{[1
]}

机构：

[1] TEMPLE UNIV,DEPT CHEM,PHILADELPHIA,PA 19122

来源：

CHEMISTRY OF MATERIALS | 1994年 / 6卷 / 11期

关键词：

D O I：

10.1021/cm00047a038

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：

The syntheses and chemical properties of geometrical isomers of 12 tungstopolyoxyanions have been studied for several decades. These materials are utilized in multiple commercial catalytic processes and many experimental and theoretical initiatives have been directed at understanding and enhancing their stability. In our previous work, we have discovered that competing bonding interactions help to establish limits in stability. These effects include substitution of the metal ion in the oxide shell and coordination effects with the central tetrahedral oxyanion. Here, we focus on the central oxyanion effect and the electronic stability of the beta-Keggin ion in comparison with its alpha-isomer. It is obvious that the beta-Keggin ion is less thermally stable than its alpha-isomer. Electronic indicators help to establish the stability limits and characterize spectral and physical properties.

引用

页码：2130 / 2137

页数：8

共 27 条

[1] DESCRIPTION OF DIATOMIC-MOLECULES USING ONE ELECTRON CONFIGURATION ENERGIES WITH 2-BODY INTERACTIONS [J].