Syntheses, Structures and Photoelectron Spectra of Phospha-Alkenes and Phospha-Alkynes and Their Transition Metal Complexes

J. C.T.R. Burckett St. Laurent School of Chemistry and Molecular Sciences, University of Sussex, Brighton, BN1 9QJ, U.K.

P. B. Hitchcock School of Chemistry and Molecular Sciences, University of Sussex, Brighton, BN1 9QJ, U.K.

M. A. King School of Chemistry and Molecular Sciences, University of Sussex, Brighton, BN1 9QJ, U.K.

H. W. Kroto School of Chemistry and Molecular Sciences, University of Sussex, Brighton, BN1 9QJ, U.K.

M. F. Meidine School of Chemistry and Molecular Sciences, University of Sussex, Brighton, BN1 9QJ, U.K.

S. I. Klein School of Chemistry and Molecular Sciences, University of Sussex, Brighton, BN1 9QJ, U.K.

S. I. Al-resayes School of Chemistry and Molecular Sciences, University of Sussex, Brighton, BN1 9QJ, U.K.

R. J. Suffolk School of Chemistry and Molecular Sciences, University of Sussex, Brighton, BN1 9QJ, U.K.

J. F. Nixon School of Chemistry and Molecular Sciences, University of Sussex, Brighton, BN1 9QJ, U.K.

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Abstract

The chemistry of the novel phospha-alkenes RP[dbnd]CR'₂, and phospha-alkynes, RC[tbnd]P, containing 2pπ-3pπ bonds is of current interest.^1,2 Recent molecular orbital calculations,^3,4 suggest that the highest occupied molecular orbital in CH₂[dbnd]PH is of the π-type with the phosphorus lone pair ó-orbital only slightly more stable while the π∗ lumo orbital is relatively low lying. We now report He (I) photoelectron spectroscopic studies on a variety of RC[tbnd]P molecules^5,6 which indicate that the homo is also of the π-type and the π-σ separation is much greater than that found in the analogous RC[tbnd]N systems.

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Syntheses, Structures and Photoelectron Spectra of Phospha-Alkenes and Phospha-Alkynes and Their Transition Metal Complexes

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Syntheses, Structures and Photoelectron Spectra of Phospha-Alkenes and Phospha-Alkynes and Their Transition Metal Complexes

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