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

Inorganic Chemistry

Volumn 42, Issue 7, 2003, Pages 2185-2187

  Alexiou, Maria ^a   Dendrinou Samara, Catherine ^a   Karagianni, Anastasia ^a   Biswas, Subhashis ^b   Zaleski, Curtis M ^b   Kampf, Jeff ^b   Yoder, Derek ^b   Penner Hahn, James E ^b   Pecoraro, Vincent L ^b   Kessissoglou, Dimitris P ^a  

^a ARISTOTLE UNIVERSITY OF THESSALONIKI   (Greece)

^b UNIVERSITY OF MICHIGAN   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

2,2' BIPYRIDINE DERIVATIVE; 2,2' DIPYRIDYLKETONOXIME; IRON; MANGANESE DERIVATIVE; UNCLASSIFIED DRUG;

ARTICLE; CHEMICAL STRUCTURE; COMPLEX FORMATION; MAGNETISM; PHOTOSYNTHESIS; SPECTROSCOPY; STRUCTURE ANALYSIS; TEMPERATURE DEPENDENCE; X RAY CRYSTALLOGRAPHY;

CRYSTALLOGRAPHY, X-RAY; IRON; MAGNETICS; MANGANESE; MODELS, MOLECULAR; MOLECULAR CONFORMATION; OXIDATION-REDUCTION; OXYGEN; PHOTOSYNTHETIC REACTION CENTER COMPLEX PROTEINS; PHOTOSYSTEM II PROTEIN COMPLEX; SPECTRUM ANALYSIS;

EID: 0037425336     PISSN: 00201669     EISSN: None     Source Type: Journal    
DOI: 10.1021/ic026050h     Document Type: Article

References (23)

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11. Variable-temperature DC SQUID measurements were collected on a Quantum Design MPMS Controller SQUID susceptometer (model 1822) equipped with a 5 T superconducting magnet over the range 5-300 K at a field of 5000 G. Powdered samples were used for data collection. Pascal's constants were used to determine the diamagnetic correction factors (Boudreaux, E. A.; Mulay, L. N. In Theory & Applications of Molecular Paramagnetism; John Wiley & Sons: New York, 1976; p 494. Drago, R. S. In Physical Methods For Chemists, 2nd ed.; Surfside Scientific Publishers: Gainesville, FL, 1992; p 471). The magnetic data were fit with the Van Vleck formula over the range 40-300 K. It was assumed that there was no interaction between the two Mn(II) centers. The g for Mn(II) was fixed at 2.0, and the g value for Mn(IV) was allowed to vary. The Van Vleck formula can be found in the Supporting Information.
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21. IV complexes. Uncertainty in oxidation state composition, based on the observed range of fit values, is approximately 10%.
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