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- W1986372290 abstract "Abstract For a series of 31 novel diphenyl 1-anilino-1-arylmethanephosphonates, substituted in the meta and para position of the anilino and/or the aryl ring, 31P chemical shifts show good linear correlation with Taft's [sgrave]° parameters, the 31P nucleus appearing better shielded in the case of electron-withdrawing substituents. This inverse relationship is due to a field effect of the substituent dipole which polarizes π-electron clouds in the molecule, resulting in a higher P=O double bond order, and thence better 31P shielding. A corresponding shift of π-electron density is likewise observed for the 13C resonances of the two diastereotopic phenoxy and the anilino or aryl rings, respectively, where-M ands-I substituents cause a downfield shift of para and meta, and an upfield shift of ortho and ipso carbon resonances." @default.
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- W1986372290 date "1987-03-01" @default.
- W1986372290 modified "2023-09-22" @default.
- W1986372290 title "Substituent Effects on31P and13C Chemical Shifts of Substituted Diphenyl 1-anilino-1-arylmethanephosphonates and Their Anions" @default.
- W1986372290 cites W2007392882 @default.
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- W1986372290 doi "https://doi.org/10.1080/03086648708080587" @default.
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