Syntheses,Structures and Photoelectron Spectra of Phospha-Alkenes and Phospha-Alkynes and Their Transition Metal Complexes |
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| Authors: | J. C.T.R. Burckett St. Laurent P. B. Hitchcock M. A. King H. W. Kroto M. F. Meidine S. I. Klein |
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| Affiliation: | School of Chemistry and Molecular Sciences , University of Sussex , Brighton, BN1 9QJ, U.K. |
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| Abstract: | 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 molecules5,6 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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