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Updated: Jul 5, 2026

Synthesis of a Water-soluble Metal–Organic Complex Array
Published on: October 8, 2016
Delocalization in platinum-alkynyl systems: a metal-bridged organic mixed-valence compound
Simon C Jones1, Veaceslav Coropceanu, Stephen Barlow
1School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.
Abstract:
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 pi-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.
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