Highly self-organized electron transfer from an iridium complex to p-benzoquinone due to formation of a pi-dimer radical anion complex triply bridged by scandium ions

Junpei Yuasa; Tomoyoshi Suenobu; Shunichi Fukuzumi

doi:10.1021/ja037098c

Highly self-organized electron transfer from an iridium complex to p-benzoquinone due to formation of a pi-dimer radical anion complex triply bridged by scandium ions

J Am Chem Soc. 2003 Oct 8;125(40):12090-1. doi: 10.1021/ja037098c.

Authors

Junpei Yuasa¹, Tomoyoshi Suenobu, Shunichi Fukuzumi

Affiliation

¹ Department of Material and Life Science, Graduate School of Engineering, Osaka University, CREST, Japan Science and Technology Corporation, 2-1, Yamada-oka, Suita, Osaka 565-0871, Japan.

PMID: 14518984
DOI: 10.1021/ja037098c

Abstract

Unusually high kinetic order was observed in self-organized Sc3+-promoted electron transfer from tris(2-phenylpyridine)iridium(III) [Ir(ppy)3] to p-benzoquinone (Q) in propionitrile, third-order with respect to the concentration of Sc3+ and second-order with respect to the concentration of Q, to produce a pi-dimer semiquinone radical anion complex that is triply bridged by three Sc3+ ions (Q*--3Sc3+-Q).

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Benzoquinones / chemistry*
Electron Spin Resonance Spectroscopy
Iridium / chemistry*
Kinetics
Nitriles / chemistry
Organometallic Compounds / chemistry
Oxidation-Reduction
Pyridines / chemistry
Scandium / chemistry*
Thermodynamics

Substances

Benzoquinones
Nitriles
Organometallic Compounds
Pyridines
2-phenylpyridine
quinone
Iridium
propionitrile
Scandium