Cyclometalated Osmium-Amine Electronic Communication through the p-Oligophenylene Wire

	Cyclometalated Osmium-Amine Electronic Communication through the p-Oligophenylene Wire
	Shen, Jun-Jian; Shao, Jiang-Yang; Gong, Zhong-Liang; Zhong, Yu-Wu
刊名	INORGANIC CHEMISTRY
	2015-11-16
卷号	54 期号:22 页码:10776-10784
英文摘要	A series of bis-tridentate cydometalated osmium complexes with a redox-active triarylamine substituent have been prepared, where the amine substituent is separated from the osmium ion by a p-oligophenylene wire of various lengths. X-ray crystallographic data of complexes 3(PF6) and 4(PF6) with three or four repeating phenyl units between the osmium ion and the amine substituent are presented. These complexes show two consecutive anodic redox couples between +0.1 and +0.9 V vs Ag/AgCl, with the potential splitting in the range of 300-390 mV. A combined experimental and theoretical study suggests that, in the one-electron-oxidized state, the odd electron is delocalized for short congeners and localized on the osmium component for long congeners. The electronic coupling parameter (V-ab) was estimated by the Marcus Hush analysis. The distance dependence plot of ln(V-ab) versus the osmium amine geometrical distance (R-ab) gives a negative linear relationship with a decay slope of -0.19 angstrom(-1), which is slightly steeper with respect to the previously reported ruthenium amine series with the same molecular wire. DFT calculations with the long-range-corrected UCAM-B3LYP functional gave more reasonable results for the osmium complexes with respect to those with UB3LYP.
收录类别	SCI
语种	英语
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/29368]
专题	化学研究所_光化学实验室
作者单位	Chinese Acad Sci, Inst Chem, CAS Key Lab Photochem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Shen, Jun-Jian,Shao, Jiang-Yang,Gong, Zhong-Liang,et al. Cyclometalated Osmium-Amine Electronic Communication through the p-Oligophenylene Wire[J]. INORGANIC CHEMISTRY,2015,54(22):10776-10784.
APA	Shen, Jun-Jian,Shao, Jiang-Yang,Gong, Zhong-Liang,&Zhong, Yu-Wu.(2015).Cyclometalated Osmium-Amine Electronic Communication through the p-Oligophenylene Wire.INORGANIC CHEMISTRY,54(22),10776-10784.
MLA	Shen, Jun-Jian,et al."Cyclometalated Osmium-Amine Electronic Communication through the p-Oligophenylene Wire".INORGANIC CHEMISTRY 54.22(2015):10776-10784.