Long-range phosphorus-31-hydrogen-1 spin-spin couplings in benzyl and tolyl phosphorus compounds

CE Griffin, M Gordon

Index: Griffin,C.E.; Gordon,M. Journal of the American Chemical Society, 1967 , vol. 89, # 17 p. 4427 - 4431

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Citation Number: 24

Abstract

Abstract: Examination of the spectra of a series of tolyl-and benzylphosphonium salts, phosphonates, and phosphine oxides shows the existence of two types of long-range 31P- 1H spin-spin couplings. Four-bond allylic couplings (1-2.5 Hz) are observed in both series of compounds; the magnitude of 4 J~~ depends upon the position of attachment (sp2 or sp3 carbon) of phosphorus to the allylic triad. Both five-and seven-bond homoallylic couplings ...