DOUBLE-EXCHANGE INTERACTIONS IN THE MIXED-VALENCE HEXANUCLEAR OCTAHEDRAL CLUSTERS [FE-6(MU(3)-X)(8)(PET(3))(6)](+) (X=S,SE)

被引：16

作者：

BENCINI, A ^{[1
]}

PALII, AV ^{[1
]}

OSTROVSKY, SM ^{[1
]}

TSUKERBLAT, BS ^{[1
]}

UYTTERHOEVEN, MG ^{[1
]}

机构：

[1] MOLDAVIAN ACAD SCI, KISHINEV, MOLDOVA

来源：

MOLECULAR PHYSICS | 1995年 / 86卷 / 05期

关键词：

D O I：

10.1080/00268979500102601

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 model that considers the double exchange and isotropic exchange is developed to account for the magnetic properties of the hexanuclear octahedral clusters [Fe-6(mu(3) - X(8))(PEt(3))(6)](+) (X = S, Se), in which one extra electron added to the [Fe-6(mu(3) - X(8))(PEt(3))(6)](2+) is delocalized over six structurally equivalent iron centres. The ground state of the complexes is S = 7/2 and, in our model, it can arise from either a ferromagnetic or an antiferromagnetic exchange interaction between the unpaired spins on Fe, provided that the sign of the transfer integral p is negative.

引用

页码：1085 / 1097

页数：13

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