Second-order Møller-Plesset evaluation of the bond length alternation of several series of linear oligomers

Denis Jacquemin, Antoine Femenias, Henry Chermette, Jean-Marie André, Eric Perpète

Research output: Contribution to journalArticle

Abstract

We investigate, at the second-order Møller−Plesset level, the bond length alternation of 30 series of increasingly long linear oligomers for a total of more than 250 compounds, polyacetylene, polymethineimine, polyphosphinoborane, polyaminoborane, polyphosphazene, etc., for which, often for the first time, an accurate estimate of the polymeric bond length alternation is given. The variations induced either by chemical substitution of the backbone atoms or conformational modifications are discussed. Only three polymers present a large bond length alternation (>0.03 Å). Systematic basis set effects have been unravelled, i.e., MP2/6-311G(2d) always overshoots the bond length alternation. Best estimates of the bond length alternation are provided for more than a dozen of polymers.
Original languageEnglish
Pages (from-to)5734-5741
Number of pages8
JournalThe Journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory
Volume109
Issue number25
DOIs
Publication statusPublished - 2005

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