Tuning of electron delocalization in polynuclear mixed-valence clusters by super-exchange and double exchange

被引：24

作者：

Krockel, M

Grodzicki, M

Papaefthymiou, V

Trautwein, AX

Kostikas, A

机构：

[1] NATL CTR SCI RES DEMOKRITOS, GR-15310 ATHENS, GREECE

[2] UNIV JOANNINA, DEPT PHYS, GR-45110 IOANNINA, GREECE

来源：

JOURNAL OF BIOLOGICAL INORGANIC CHEMISTRY | 1996年 / 1卷 / 02期

关键词：

D O I：

10.1007/s007750050038

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Values for the exchange-coupling constant J and the double-exchange parameter B have been estimated for dimeric and hexameric mixed-valence iron clusters. For sulfur-bridged species the range of J values is 300-450 cm(-1), and B values vary between 320 and 400 cm(-1). For an OH-bridged diiron cluster B is as large as 1300 cm(-1).

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页码：173 / 176

页数：4

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