A novel tetranuclear manganese complex that displays multiple high-potential redox processes. Synthesis, structure, and properties of ((Mn sub 2 (TPHPN)(O sub 2 CCH sub 3 )(H sub 2 O)) sub 2 O)(ClO sub 4 ) sub 4 ter dot 2CH sub 3 OH
- Univ. of California, Berkeley (USA)
As the primary source of atmospheric dioxygen, photosynthetic water oxidation is an essential process for aerobic organisms. This four-electron, four-proton reaction occurs at the photosystem II oxygen-evolving complex (PSII OEC) in green plants and algae. While it is known that four manganese atoms per PSII OEC are required for optimal oxygen evolution activity, there is no consensus as to the precise arrangement of the Mn atoms, nor is the mechanism of water oxidation well understood. In this report we describe the synthesis and structure of a novel mixed-valence (Mn{sup II}{sub 2}Mn{sup III}{sub 2}) tetranuclear complex. ((Mn{sub 2}(TPHPN)(O{sub 2}CC-H{sub 2})(H{sub 2}O)){sub 2}O)(ClO{sub 4}){sub 4}. (1), which does indeed display several quasireversible oxidations between 0.8 and 1.4 V vs SSCE.
- OSTI ID:
- 7155512
- Journal Information:
- Journal of the American Chemical Society; (USA), Vol. 111:25; ISSN 0002-7863
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
59 BASIC BIOLOGICAL SCIENCES
MANGANESE COMPLEXES
SYNTHESIS
ALGAE
DATA ANALYSIS
EXPERIMENTAL DATA
MEASURING INSTRUMENTS
MEASURING METHODS
PHOTOSYNTHESIS
PLANT TISSUES
BODY
CHEMICAL REACTIONS
COMPLEXES
DATA
INFORMATION
NUMERICAL DATA
PHOTOCHEMICAL REACTIONS
PLANTS
TISSUES
TRANSITION ELEMENT COMPLEXES
400500* - Photochemistry
550000 - Biomedical Sciences
Basic Studies
400000 - Chemistry