Publication Date:
1996-03-08
Description:
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 M2(mu-O)2 units (where M is manganese). The reverse reaction, reductive cleavage of the dioxygen O-O bond, is performed at a variety of dicopper 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, M2(O2), and isomers having M2(mu-O)2 cores. The viability of this notion has been demonstrated by the identification of an equilibrium between synthetic complexes having [Cu2(mu-eta2:eta2-O2)]2+ and [Cu2(mu-O)2]2+ cores through kinetic, spectroscopic, and crystallographic studies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Halfen, J A -- Mahapatra, S -- Wilkinson, E C -- Kaderli, S -- Young, V G Jr -- Que, L Jr -- Zuberbuhler, A D -- Tolman, W B -- GM33162/GM/NIGMS NIH HHS/ -- GM47365/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1996 Mar 8;271(5254):1397-400.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, University of Minnesota, Minneapolis, MN 55455, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8596910" target="_blank"〉PubMed〈/a〉
Keywords:
Chemistry, Physical
;
Copper/*chemistry
;
Crystallography, X-Ray
;
Heterocyclic Compounds/chemistry
;
Organometallic Compounds/chemistry
;
Oxidation-Reduction
;
Oxygen/*chemistry
;
Physicochemical Phenomena
;
Spectrophotometry, Ultraviolet
;
Spectrum Analysis, Raman
;
Temperature
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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