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Two tetranuclear Mn-complexes as biomimetic models of the oxygen evolving complex in Photosystem II - A synthesis, characterisation and reactivity study
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi.
2009 (engelsk)Inngår i: Dalton Transactions, ISSN 1477-9226, E-ISSN 1477-9234, Vol. 45, s. 10044-10054Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

In this work we report the preparation of two metallamacrocyclic tetranuclear manganese(II) complexes, [L1(4)Mn(4)](ClO4)(4) and [L2(4)Mn(4)](ClO4)(4) where L1 and L2 are the anions of the heptadentate ligands 2-((2-(bis(pyridin-2-ylmethyl) amino) ethyl)(methyl) amino) acetic acid and 2-(benzyl(2-(bis(pyridin-2-ylmethyl) amino) ethyl) amino) acetic acid), respectively. The complexes have been fully characterized by ESI-MS, elemental analysis, single-crystal X-ray diffraction, magnetic susceptibility, and EPR spectroscopy. Electrochemical reactions as well as reactions with different chemical redox reagents have been performed and a reversible two electron oxidation per manganese ion has been identified. The reaction of [L1(4)Mn(4)](ClO4)(4) with oxone or cerium(IV) results in the evolution of oxygen which makes this system interesting for future studies in the search for a functional mimic of the oxygen evolving complex in Photosystem II.

sted, utgiver, år, opplag, sider
2009. Vol. 45, s. 10044-10054
Emneord [en]
DINUCLEAR MANGANESE COMPLEX; WATER-OXIDATION; FUNCTIONAL-MODEL; EVOLUTION; SPECTROSCOPY, LIGANDS, CHEMISTRY, MECHANISM, EXCHANGE, CLUSTER
HSV kategori
Forskningsprogram
materialkemi
Identifikatorer
URN: urn:nbn:se:su:diva-34864DOI: 10.1039/b906175dISI: 000271714800014OAI: oai:DiVA.org:su-34864DiVA, id: diva2:286726
Merknad
övriga författare 3st.Tilgjengelig fra: 2010-01-15 Laget: 2010-01-13 Sist oppdatert: 2017-12-12bibliografisk kontrollert

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