Models for the lower S states of photosystem II:: A trinuclear mixed-valent MnII/MnIV/MnII complex

被引：53

作者：

Alexiou, M

Dendrinou-Samara, C

Karagianni, A

Biswas, S

Zaleski, CM

Kampf, J

Yoder, D

Penner-Hahn, JE

Pecoraro, VL ^{[1
]}

Kessissoglou, DP

机构：

[1] Aristotle Univ Thessaloniki, Dept Chem, Thessaloniki 54124, Greece

[2] Univ Michigan, Dept Chem, Ann Arbor, MI 48109 USA

来源：

INORGANIC CHEMISTRY | 2003年 / 42卷 / 07期

关键词：

D O I：

10.1021/ic026050h

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The trinuclear complex Mn-3(pko)(4)(CH3O)(2)(SCN)(2).CH3OH, 1, where Hpko is 2,2'-dipyridylketonoxime, is a rare example of a complex simultaneously containing Mn-II and Mn-IV. X-ray crystallography and XANES spectroscopy clearly distinguish the (Mn2MnIV)-Mn-II valence isomer from the more commonly observed (Mn2MnIV)-Mn-III formulation. Fits to variable-temperature magnetic susceptibility data indicate that the Mn-II and Mn-IV are ferromagnetically coupled (J = +6.13 cm(-1)) and that 1 has an S = 13/2 ground state.

引用

页码：2185 / 2187

页数：3

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