title: Highly polar solvent-induced disproportionation of a cationic Pt(II)-diimine complex containing an o-semiquinonato.
abstract: Chemical one-electron oxidation of [Pt(II)(3,5-DTBCat)(DTBbpy)] (1) (3,5-DTBCat = 3,5-di-tert-butyl catecholato, DTBbpy = 4,4'-di-tert-butyl-2,2'-bipyridine) afforded the corresponding paramagnetic complex, [Pt(II)(3,5-DTBSQ)(DTBbpy)](+)PF6(-) (1(PF6)), as a result of ligand-centred oxidation. While complex 1 is relatively stable in common organic solvents, the present study demonstrates that cationic [1](+) is subject to an unprecedented solvent-induced disproportionation in highly polar solvents such as DMSO and DMF, which results in the formation of 1 and a free benzoquinone.
authors.affiliation: Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan. chang@kc.chuo-u.ac.jp.
authors.forename: Shota
authors.initials: S
authors.lastname: Yamada
authors.affiliation: Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan. chang@kc.chuo-u.ac.jp.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Matsumoto
authors.affiliation: Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan. chang@kc.chuo-u.ac.jp.
authors.forename: Masanori
authors.initials: M
authors.lastname: Wakizaka
authors.affiliation: Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan. chang@kc.chuo-u.ac.jp.
authors.forename: Ho-Chol
authors.initials: HC
authors.lastname: Chang