SYNTHESIS, CRYSTAL-STRUCTURE, SPECTROSCOPIC AND MAGNETIC-PROPERTIES OF STRONTIUM OXOVANADIUM(IV) TARTRATE - MOLECULAR PRECURSOR FOR SRVO3

被引：11

作者：

GARCIAJACA, J ^{[1
]}

PIZARRO, JL ^{[1
]}

LARRAMENDI, JIR ^{[1
]}

LEZAMA, L ^{[1
]}

ARRIORTUA, MI ^{[1
]}

ROJO, T ^{[1
]}

机构：

[1] UNIV BASQUE COUNTRY, DEPT MINERAL & PETROL, E-48080 BILBAO, SPAIN

来源：

JOURNAL OF MATERIALS CHEMISTRY | 1995年 / 5卷 / 02期

关键词：

D O I：

10.1039/jm9950500277

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 new alkaline-earth-metal oxovanadium(lv) tartrate dimer with formula [Sr(VO)((+/-)-C4H2O6(H2O)(3)](2) has been synthesized and characterized. The crystal structure consists of a three-dimensional (3D) arrangement of [(VO)((+/-)-C4H2O6)(2)(4-)] dimeric anions, strontium cations and water molecules. There are several bonds between the oxygen atoms of the dimeric anions and the strontium cations, including a bond with the oxygen of the vanadyl group. The electron paramagnetic resonance (EPR) measurements show the dimeric nature of this complex. Thermal treatments of the compound, at low temperatures, yield different mixed oxides depending on the atmosphere employed. In air at 500 degrees C only the alpha-pyrovanadate is obtained while a thermal treatment in a hydrogen atmosphere at 900 degrees C is needed in order to obtain the SrVO3 oxide. The magnetic susceptibility of the SrVO3 phase revealed its metallic character.

引用

页码：277 / 283

页数：7

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