Delocalization in platinum-alkynyl systems:: A metal-bridged organic mixed-valence compound

被引：113

作者：

Jones, SC

Coropceanu, V

Barlow, S

Kinnibrugh, T

Timofeeva, T

Brédas, JL

Marder, SR ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA

[2] New Mexico Highlands Univ, Dept Nat Sci, Las Vegas, NM 87701 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2004年 / 126卷 / 38期

关键词：

D O I：

10.1021/ja045869m

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A complex featuring two triarylamine redox centers bridged by Pt, trans-bis(triethylphosphine)-bis{4-[bis(4-methoxyphenyl)amino]phenylethynyl} platinum(II), has been synthesized as a model system for π-conjugated Pt-containing polymers. Analysis of the intervalence charge-transfer band displayed by its mixed-valence monocation affords a quantitative assessment of electronic delocalization through the Pt bridge; this is found to be only slightly smaller than that determined for a benzene-bridged analogue. These results are supported by density functional theory calculations, which show that the active orbitals involved in the electron-transfer process in both cases have similar delocalization through the bridging unit. Copyright © 2003 American Chemical Society.

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页码：11782 / 11783

页数：2

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