Synthesis, Structures, and Properties of Neutral and Radical Cationic S,C,C-Bridged Triphenylamines

Autor: Chitoshi Kitamura, Taisuke Matsumoto, Seiji Tobita, Toshitada Yoshihara, Shin-ichiro Kato, Motoko S. Asano, Shuichi Suzuki, Takanori Matsuoka
Rok vydání: 2019
Předmět:
Zdroj: Organic Letters. 22:734-738
ISSN: 1523-7052
1523-7060
DOI: 10.1021/acs.orglett.9b04575
Popis: A structurally constrained S,C,C-bridged triphenylamine was synthesized, and the corresponding radical cation was obtained as a hexachloroantimonate by chemical oxidation. An X-ray crystallographic analysis revealed an almost planar structure for this radical cation, which thus represents the first example of a planar, para-unsubstituted triphenylamine radical cation analogue with a sulfur bridge. The electronic properties of the radical cation were examined by UV–vis–NIR and ESR spectroscopy as well as DFT calculations.
Databáze: OpenAIRE