Thermochromism of the disproportionation equilibrium of π-dimer radical anion complexes bridged by scandium ions

Junpei Yuasa; Shunichi Fukuzumi

doi:10.1039/b316234f

Thermochromism of the disproportionation equilibrium of π-dimer radical anion complexes bridged by scandium ions

Junpei Yuasa, Shunichi Fukuzumi

Department of Chemistry & Nanoscience

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

Semiquinone radical anion (Q^·-) forms a stable π-dimer with neutral p-benzoquinone (Q), bridged by two or three scandium ions (Sc³⁺) to afford Q^·--nSc³⁺-Q (n = 2,3), which is in disproportionation equilibrium with Q and hydroquinone (QH₂). The number of binding scandium ions changes depending on temperature, causing a remarkable color change associated with the change in the ESR spectra.

Original language	English
Pages (from-to)	642-644
Number of pages	3
Journal	Organic and Biomolecular Chemistry
Volume	2
Issue number	5
DOIs	https://doi.org/10.1039/b316234f
State	Published - 7 Mar 2004

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title = "Thermochromism of the disproportionation equilibrium of π-dimer radical anion complexes bridged by scandium ions",

abstract = "Semiquinone radical anion (Q·-) forms a stable π-dimer with neutral p-benzoquinone (Q), bridged by two or three scandium ions (Sc3+) to afford Q·--nSc3+-Q (n = 2,3), which is in disproportionation equilibrium with Q and hydroquinone (QH2). The number of binding scandium ions changes depending on temperature, causing a remarkable color change associated with the change in the ESR spectra.",

author = "Junpei Yuasa and Shunichi Fukuzumi",

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N2 - Semiquinone radical anion (Q·-) forms a stable π-dimer with neutral p-benzoquinone (Q), bridged by two or three scandium ions (Sc3+) to afford Q·--nSc3+-Q (n = 2,3), which is in disproportionation equilibrium with Q and hydroquinone (QH2). The number of binding scandium ions changes depending on temperature, causing a remarkable color change associated with the change in the ESR spectra.

AB - Semiquinone radical anion (Q·-) forms a stable π-dimer with neutral p-benzoquinone (Q), bridged by two or three scandium ions (Sc3+) to afford Q·--nSc3+-Q (n = 2,3), which is in disproportionation equilibrium with Q and hydroquinone (QH2). The number of binding scandium ions changes depending on temperature, causing a remarkable color change associated with the change in the ESR spectra.

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Thermochromism of the disproportionation equilibrium of π-dimer radical anion complexes bridged by scandium ions

Abstract

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