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

Simon C. Jones, Veaceslav Coropceanu, Stephen Barlow, Tiffany Kinnibrugh, Tatiana Timofeeva, Jean Luc Brédas, Seth R. Marder*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

119 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)11782-11783
Number of pages2
JournalJournal of the American Chemical Society
Issue number38
StatePublished - Sep 29 2004
Externally publishedYes

ASJC Scopus subject areas

  • General Chemistry
  • Biochemistry
  • Catalysis
  • Colloid and Surface Chemistry


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