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O-O Bond Cleavage in Dinuclear Peroxo Complexes of Iron Porphyrins: a Quantum Chemical Study.
Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum.
Ansvarlig organisasjon
2006 Inngår i: Inorganic Chemistry (American Chemical Society), ISSN 0020-1669, Vol. 46, nr 19, s. 7992-7997Artikkel i tidsskrift (Fagfellevurdert) Published
sted, utgiver, år, opplag, sider
2006. Vol. 46, nr 19, s. 7992-7997
Identifikatorer
URN: urn:nbn:se:su:diva-25471OAI: oai:DiVA.org:su-25471DiVA, id: diva2:199788
Merknad
Part of urn:nbn:se:su:diva-8197Tilgjengelig fra: 2008-09-15 Laget: 2008-09-15bibliografisk kontrollert
Inngår i avhandling
1. Biomimetic Transition Metal Catalysts: Insights from Theoretical Modeling
Åpne denne publikasjonen i ny fane eller vindu >>Biomimetic Transition Metal Catalysts: Insights from Theoretical Modeling
2008 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

The scientific interest in the chemistry of synthetic transition metal complexes is motivated by at least two arguments:

1.These can be regarded as models of biological transition metal complexes, e.g. metalloenzymes, whose functions can be difficult to reveal in detail due to their complexity.

2.Transition metal complexes are used for catalytic purposes in the industrial synthesis of chemicals. There is a large potential for further development of this technology, which can be motivated both by economic and environmental arguments.

In the present thesis, density functional theory (a quantum mechanical method) has been applied to model reactions involving synthetic iron and copper complexes in solution. The complexity of the solvent environment is a challenging problem for theoretical investigations and a significant part of the theses has been to investigate the mechanistic effects of metal-coordinating solvent molecules, Lewis bases and counter ions. For example, it is explained why the cleavage of the O-O bond in heme-diiron-peroxides is faster in the presence of a coordinating Lewis base. Furthermore, the experimentally observed structure-activity relationship between the Fe(III)(µ-O)2Fe(IV) and (H2O)Fe(III)(µ-O)Fe(IV)O motifs is given an explanation. In addition, the present thesis presents a systematic investigation of how the self-interaction error in density functional theory (DFT) affects the modeling of transition metal catalysis.

sted, utgiver, år, opplag, sider
Stockholm: Fysikum, 2008. s. 150
Emneord
Catalysis, biomimetic, copper, non-heme iron, heme iron, O2 cleavage, H-atom transfer, radical chemistry, redox chemistry, thermo chemistry, entropy calculations, quantum chemistry, spin states, density functional theory (DFT), self-interaction error (SIE).
HSV kategori
Forskningsprogram
kemisk fysik
Identifikatorer
urn:nbn:se:su:diva-8197 (URN)9789171557223 (ISBN)
Disputas
2008-09-19, Magnélisalen, Kemiska övningslaboratoriet, Svante Arrhenius väg 12 A, Stockholm, 10:00
Opponent
Veileder
Tilgjengelig fra: 2008-09-15 Laget: 2008-09-15bibliografisk kontrollert

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