Electronic properties of tricoordinated phosphorus in hexagonal phosphininium compounds and molecular aromaticity
Copyright (c) 2007 Wiley Periodicals, Inc.
| Publié dans: | Journal of computational chemistry. - 1984. - 28(2007), 9 vom: 15. Juli, Seite 1467-1475 |
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| Auteur principal: | |
| Autres auteurs: | , , , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2007
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| Accès à la collection: | Journal of computational chemistry |
| Sujets: | Journal Article |
| Résumé: | Copyright (c) 2007 Wiley Periodicals, Inc. Calculations with B3LYP within quantum chemical density functional theory have been carried out for 1-H-phosphininium cation and a series of 1-R-phosphininium molecules (R=cyclopentadiene, alpha and beta pyrroles, alpha and beta phosphole, C5BH5-- and CH2--). The negative nuclear-independent chemical shift values and the positive aromatic stabilization energies confirm that they are aromatic compounds. In particular, the 1-H-phosphininium cation even exhibits stronger aromatic character than the well-known aromatic phosphinine. The aromatic substituents have strong capability to attract electrons. It is the conjugation and aromaticity that keeps the stability and conformations of the molecules investigated. Owing to the perturbation of the aromatic substituted groups, the predicted large T values and the enlarged HOMO-LUMO gap of the phosphininium cation indicate that these compounds are expected in experiment |
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| Description: | Date Completed 25.06.2007 Date Revised 07.02.2018 published: Print Citation Status PubMed-not-MEDLINE |
| ISSN: | 1096-987X |
| DOI: | 10.1002/jcc.20650 |