(L sub 2 Mn sub 2 (. mu. -O) sub 2 (. mu. -O sub 2 ))(ClO sub 4 ) sub 2 : The first binuclear (. mu. -peroxo)dimanganese(IV) complex (L = 1,4,7-trimethyl-1,4,7-triazacyclononane). A model for the S sub 4 yields S sub 0 transformation in the oxygen-evolving complex in photosynthesis
Journal Article
·
· Journal of the American Chemical Society; (USA)
- Ruhr-Universitaet, Bochum (West Germany)
- Anorganisch-Chemisches Institute der Universitaet, Heidelberg (West Germany)
Light-driven oxidation of water to molecular oxygen in photosystem II (PS II) has been shown to occur at an active site comprising four manganese ions. There are five kinetically resolved intermediates in the catalytic cycle which have been designated S{sub 0} to S{sub 4}. S{sub 0} represents the most reduced and S{sub 4} the most oxidized level. Here the authors report the synthesis and x-ray structure of the first ({mu}-peroxo)dimanganese(IV) complex, (L{sub 2}Mn{sub 2}({mu}-O){sub 2}({mu}-O{sub 2}))(ClO{sub 4}){sub 2} (1) (L = 1,4,7-trimethyl-1,4,7-triazacyclononane), as a model for part of the S{sub 4} {yields} S{sub 0} transformation in PS II.
- OSTI ID:
- 6437231
- Journal Information:
- Journal of the American Chemical Society; (USA), Journal Name: Journal of the American Chemical Society; (USA) Vol. 112:17; ISSN 0002-7863; ISSN JACSA
- Country of Publication:
- United States
- Language:
- English
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·
OSTI ID:6046394
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Journal Article
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Wed Sep 29 00:00:00 EDT 1993
· Inorganic Chemistry; (United States)
·
OSTI ID:5078746
Synthesis of the hexaamine ligand 1,4,7-tris(3-aminopropyl)-1,4,7-triazacyclononane: Reactivity and x-ray crystal structures of the nickel(II) and cobalt(III) complexes
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Related Subjects
14 SOLAR ENERGY
140505* -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
CHEMICAL REACTIONS
COMPLEXES
CRYSTAL STRUCTURE
ELEMENTS
HYDROGEN COMPOUNDS
MANGANESE COMPLEXES
MEASURING INSTRUMENTS
MEASURING METHODS
NONMETALS
OXYGEN
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
TRANSITION ELEMENT COMPLEXES
WATER
140505* -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
CHEMICAL REACTIONS
COMPLEXES
CRYSTAL STRUCTURE
ELEMENTS
HYDROGEN COMPOUNDS
MANGANESE COMPLEXES
MEASURING INSTRUMENTS
MEASURING METHODS
NONMETALS
OXYGEN
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
TRANSITION ELEMENT COMPLEXES
WATER