MIXED-VALENCE TRINUCLEAR MANGANESE CLUSTERS - INFLUENCE OF THE ELECTRONIC TRANSFER ON THE MAGNETIC-PROPERTIES

被引:26
作者
GOMEZGARCIA, CJ [1 ]
CORONADO, E [1 ]
POURROY, G [1 ]
机构
[1] EHICS,GMI,IPCMS,F-67008 STRASBOURG,FRANCE
关键词
D O I
10.1063/1.346041
中图分类号
O59 [应用物理学];
学科分类号
摘要
The magnetic behavior of mixed-valence trinuclear clusters d 4-d4-d5 is discussed on the basis of a model which takes into account valence delocalization and Heisenberg exchange. This model considers the competing effect between the electronic transfer and the localization of the extra electron due to an asymmetry of the triangular entity. The magnetic properties of the mixed-valence oxo-centered Mn(II)-Mn(III)- Mn(III) complexes formulated as Mn3O(O2CR) 6L3 (R=Me, L=pyridine) are discussed on the basis of the developed model, supporting a significant intramolecular electron transfer. A comparison of these results to those previously reported by assuming a valence-trapped model is given.
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页码:5992 / 5994
页数:3
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