Generation of a triplet diradical from a donor–acceptor cross conjugate upon acid-induced electron transfer

Mats O. Sandberg; Osami Nagao; Zhikun Wu; Michio M. Matsushita; Tadashi Sugawara

doi:10.1039/B804999H

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Generation of a triplet diradical from a donor–acceptor cross conjugate upon acid-induced electron transfer†

Mats O. Sandberg,^a Osami Nagao,^a Zhikun Wu,^a Michio M. Matsushita^a and Tadashi Sugawara*^a

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* Corresponding authors

^a Department of Basic Science, Graduate School of Arts & Sciences, The University of Tokyo, Komaba, Meguro-Ku, Japan
E-mail: suga@pentacle.c.u-tokyo.ac.jp
Fax: +81-3-5454-6997
Tel: +81-3-5454-6742

Abstract

Enhancement of the electron acceptor ability of a para-quinodiimine unit by double protonation leads to the proton-induced intramolecular electron transfer from the donor unit to the cross-conjugated acceptor, giving rise to ground state triplet diradical reversibly.

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Supplementary files

Preparation methods for compounds QA, the details of the UV-vis spectral change upon titration of QA with TFA, ESR spectrum of QA·H 2 2+ in a PVC matrix, calculated spin distribution of QA·H 2 2+, IR spectrum of QA and QA·H 2·(ClO 4) 2 with the theoretical simulations PDF (1146K)

Article information

DOI: https://doi.org/10.1039/B804999H
Article type: Communication
Submitted: 25 Mar 2008
Accepted: 06 May 2008
First published: 18 Jun 2008

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Chem. Commun., 2008, 3738-3740

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Generation of a triplet diradical from a donor–acceptor cross conjugate upon acid-induced electron transfer

M. O. Sandberg, O. Nagao, Z. Wu, M. M. Matsushita and T. Sugawara, Chem. Commun., 2008, 3738 DOI: 10.1039/B804999H

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Chemical Communications

Generation of a triplet diradical from a donor–acceptor cross conjugate upon acid-induced electron transfer†

Abstract

Supplementary files

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Generation of a triplet diradical from a donor–acceptor cross conjugate upon acid-induced electron transfer

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