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Title: 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

Abstract

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.

Authors:
;  [1]
  1. Univ. of California, Berkeley (USA)
Publication Date:
OSTI Identifier:
7155512
Resource Type:
Journal Article
Journal Name:
Journal of the American Chemical Society; (USA)
Additional Journal Information:
Journal Volume: 111:25; Journal ID: ISSN 0002-7863
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, 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

Citation Formats

Chan, M K, and Armstrong, W H. 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. United States: N. p., 1989. Web. doi:10.1021/ja00207a030.
Chan, M K, & Armstrong, W H. 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. United States. doi:10.1021/ja00207a030.
Chan, M K, and Armstrong, W H. Wed . "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". United States. doi:10.1021/ja00207a030.
@article{osti_7155512,
title = {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},
author = {Chan, M K and Armstrong, W H},
abstractNote = {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.},
doi = {10.1021/ja00207a030},
journal = {Journal of the American Chemical Society; (USA)},
issn = {0002-7863},
number = ,
volume = 111:25,
place = {United States},
year = {1989},
month = {12}
}