Reversible Cleavage and Formation of the Dioxygen O-O Bond Within a Dicopper Complex
A key step in dioxygen evolution during photosynthesis is the oxidative generation of the O-O bond from water by a manganese cluster consisting of M$_2$(μ-O)$_2$ units (where M is manganese). The reverse reaction, reductive cleavage of the dioxygen O-O bond, is performed at a variety of dicoipper an...
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Published in | Science (American Association for the Advancement of Science) Vol. 271; no. 5254; pp. 1397 - 1400 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Washington, DC
American Society for the Advancement of Science
08.03.1996
American Association for the Advancement of Science The American Association for the Advancement of Science |
Subjects | |
Online Access | Get full text |
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Summary: | A key step in dioxygen evolution during photosynthesis is the oxidative generation of the O-O bond from water by a manganese cluster consisting of M$_2$(μ-O)$_2$ units (where M is manganese). The reverse reaction, reductive cleavage of the dioxygen O-O bond, is performed at a variety of dicoipper and di-iron active sites in enzymes that catalyze important organic oxidations. Both processes can be envisioned to involve the interconversion of dimetal-dioxygen adducts, M$_2$(O$_2$), and isomers having M$_2$(μ-O)$_2$ cores. The viability of this notion has been demonstrated by the identification of an equilibrium between synthetic complexes having [Cu$_2$($\mu - \eta^2$: $\eta^2 -O_2$)]$^{2+}$ and [cu$_2$(μ-O)$_2$]$^{2+}$ cores through kinetic, spectroscopic, and crystallographic studies. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2 |
ISSN: | 0036-8075 1095-9203 |
DOI: | 10.1126/science.271.5254.1397 |