ELECTRON-PARAMAGNETIC RESONANCE INVESTIGATION OF THE PARAMAGNETIC CENTERS IN POLYCRYSTALLINE MOO3

被引：43

作者：

DYREK, K ^{[1
]}

LABANOWSKA, M ^{[1
]}

机构：

[1] JAGIELLONIAN UNIV, REG LAB PHYSICOCHEM ANAL & STRUCT RES, PL-30060 KRAKOW, POLAND

来源：

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1991年 / 87卷 / 07期

关键词：

D O I：

10.1039/ft9918701003

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 defect MoO3 was obtained by thermal decomposition of hexakisammonium heptamolybdate in vacuo at 630 K. Different signals present in the EPR spectrum of reduced MoO3 and those appearing in the course of oxidation, were attributed to Mo5+ ions in various symmetry, situated in different sites of the MoO3 lattice. The signal of Mo3+ ions with effective spin S = 1/2 was observed in the EPR spectrum of both reduced and reoxidized MoO3. A hole centre (Mo-O)5+ was found in reoxidized MoO3. Various methods of stabilization of reduced molybdenum in the MoO3 lattice were postulated.

引用

页码：1003 / 1009

页数：7

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