π-complexes incorporating tetrakis(phenylethynyl)ethene

Douglas Philp*, Volker Gralich, Paul Seiler, François Diederich

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Tetrakis(phenylethynyl)ethene and the π-acceptors 2,4,7-trinitrofluoren- 9-one and (2,4,7-trinitrofluoren-9-ylidene)malononitrile form highly ordered donor-acceptor π-complexes having 1:2 stoichiometry in the solid state. In solution, relatively weak 1:1 complexes are formed whose stabilities are related to the spatial disposition of the donor phenyl rings rather than the HOMO-LUMO interactions of the donor-acceptor pair. The orientation of the donor with respect to the acceptor in the solid state shows a good correlation with the atom-centred point charges on each component of the complex. However, there is a very poor correlation between the orbital coefficients of the donor HOMO and the acceptor LUMO suggesting that the solid state structure is dominated by electrostatic interactions.

Original languageEnglish (US)
Pages (from-to)875-886
Number of pages12
JournalJournal of the Chemical Society, Perkin Transactions 2
Issue number5
DOIs
StatePublished - 1995

ASJC Scopus subject areas

  • Chemistry(all)

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