Preparation and Characterization of Luminescent SCS and NCN Pincer Platinum Complexes Derived from 3,5-Bis(anilinothiocarbonyl)toluene
作者:Ken Okamoto、Takaki Kanbara、Takakazu Yamamoto、Akihide Wada
DOI:10.1021/om060016j
日期:2006.7.1
Starting from 5-methyl-1,3-bis(anilinothiocarbonyl)benzene (1), two types of luminescent pincer platinum complexes with kappa S-3, C, S and kappa N-3, C, N coordination modes were obtained. Reaction of 1 with K2PtCl4 afforded a pincer Pt(II) complex (3) with the kappa S-3, C, S coordination mode, whereas oxidative cyclization of 1 yielded 5-methyl-1,3-bis(benzothiazol-2-yl)benzene (2), which provided a pincer Pt(II) complex (4) with the kappa N-3, C, N coordination mode. Molecular structures and photochemical properties of the complexes have been examined. The decay lifetimes of the emission from the complexes were in the range 10(-5)- 10(-6) s, which were indicative of phosphorescent emission.