Diphosphetes - Substituent stabilized ring systems

Guy Bertrand, Wolfgang Eisfeld, L. Nyulászi, Regis Reau, Manfred Regitz, D. Szieberth

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The mechanism of the formation of σ2P, σ4P-1,2-diphosphetes from phosphaacetylene and phosphinocarbene has been explored by quantum chemical methods. A stepwise mechanism has been established, and no transition state for a concerted pathway could be obtained. The electron distribution of the ring can be understood in terms of a MO model, where the two substituents at phosphorus act as a pseudo π center. Amino substituents on the σ4 phosphorus and silyl group on the neighbouring carbon change the stability order of the possible isomers, stabilizing the 1,2-diphosphete ring. Substitution at the σ2P-by increasing its valence-destabilizes the diphosphete ring, which remains stable only as a result of the amino and silyl substituents.

Original languageEnglish
Pages (from-to)2324-2327
Number of pages4
JournalJournal of the Chemical Society, Perkin Transactions 2
Issue number11
Publication statusPublished - Nov 2000

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Phosphorus
Isomers
Substitution reactions
Carbon
Electrons

ASJC Scopus subject areas

  • Chemistry(all)

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Diphosphetes - Substituent stabilized ring systems. / Bertrand, Guy; Eisfeld, Wolfgang; Nyulászi, L.; Reau, Regis; Regitz, Manfred; Szieberth, D.

In: Journal of the Chemical Society, Perkin Transactions 2, No. 11, 11.2000, p. 2324-2327.

Research output: Contribution to journalArticle

Bertrand, Guy ; Eisfeld, Wolfgang ; Nyulászi, L. ; Reau, Regis ; Regitz, Manfred ; Szieberth, D. / Diphosphetes - Substituent stabilized ring systems. In: Journal of the Chemical Society, Perkin Transactions 2. 2000 ; No. 11. pp. 2324-2327.
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