ELECTRON PHOTODETACHMENT FROM ORGANOPHOSPHIDE IONS - ELECTRON-AFFINITIES AND SUBSTITUENT EFFECTS IN ORGANOPHOSPHINES AND THEIR CONJUGATE RADICALS

Berger, S; Brauman, JI

HERO ID

4854541

Reference Type

Journal Article

Year

1992

HERO ID 4854541
In Press No
Year 1992
Title ELECTRON PHOTODETACHMENT FROM ORGANOPHOSPHIDE IONS - ELECTRON-AFFINITIES AND SUBSTITUENT EFFECTS IN ORGANOPHOSPHINES AND THEIR CONJUGATE RADICALS
Authors Berger, S; Brauman, JI
Journal Journal of the American Chemical Society
Volume 114
Issue 12
Page Numbers 4737-4743
Abstract Electron photodetachment from methylphosphide, cyclohexylphosphide, and phenylphosphide ions was carried out using an ion cyclotron resonance (ICR) spectrometer to generate, trap, and detect the ions. The electron affinities of the corresponding radicals inferred from the onsets were as follows: methylphosphinyl, 21.6 +/- 0.4 kcal/mol; cyclohexylphosphinyl, 23.8 +/- 0.4 kcal/mol; and phenylphosphinyl, 35.1 +/- 0.9 kcal/mol. The acidity of methylphosphine was determined by bracketing reactions to be DELTA-H-degrees(acid) between 371.5 and 366.4 kcal/mol, giving a P-H bond energy in methylphosphine between 74 and 79.5 kcal/mol.
Doi 10.1021/ja00038a041
Wosid WOS:A1992HX81500041
Is Certified Translation No
Dupe Override No
Is Public Yes