The Molecular Structure of Trimethyl(methylene)phosphorane in the Gas Phase, Determined by Electron Diffraction

Authors

  • E. A. V. Ebsworth,

    Corresponding author
    1. Department of Chemistry, University of Edinburgh, West Mains Road, Edinburgh, EH9 3JJ, Scotland
    • Department of Chemistry, University of Edinburgh, West Mains Road, Edinburgh, EH9 3JJ, Scotland
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  • Thomas E. Fraser,

    1. Department of Chemistry, University of Edinburgh, West Mains Road, Edinburgh, EH9 3JJ, Scotland
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  • David W. H. Rankin

    1. Department of Chemistry, University of Edinburgh, West Mains Road, Edinburgh, EH9 3JJ, Scotland
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Abstract

The molecular structure of trimethyl(methylene)phosphorane, (CH3)3P[DOUBLE BOND]CH2, in the gas phase has been determined by electron diffraction. Principal distances are ra(P[BOND]C)[DOUBLE BOND]181.5(3), ra(P[DOUBLE BOND]C)[DOUBLE BOND]164.0(6) pm; and the angles between the P[BOND]C(methyl) bonds are 101.6(5)°. These parameters lead to a value for the order of the highly polar P[BOND]C(methylene) bond of about 2.0.

Abstract

Die Molekülstruktur von Trimethyl(methylen)phosphoran in der Gasphase aus einer Elektronenbeugungsuntersuchung

Die Molekülstruktur von Trimethyl(methylen)phosphoran, (CH3)3P[DOUBLE BOND]CH2, in der Gasphase wurde durch Elektronenbeugung bestimmt. Wichtigste Atomabstände ra sind P[BOND]C[DOUBLE BOND]181.5(3) und P[DOUBLE BOND]C[DOUBLE BOND]164.0(6) pm. Die Valenzwinkel zwischen den P[BOND]C(Methyl)-Bindungen betragen 101.6(5)°. Diese Parameter ergeben für die stark polare P[DOUBLE BOND]C(Methylen)-Bindung eine Bindungsordnung von etwa 2.0.

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