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- W2024096979 abstract "Abstract We have prepared the following cations, and characterised their u.v. and PMR spectra: diphenyl-, phenyl-(2-methylphenyl)-, phenyl-(2-ethylphenyl)-methyl; 1,1-diphenyl-, 1-phenyl-1-(2'-methylphenyl)-, 1-phenyl-1-(2'-ethylphenyl)-, 1-phenyl-1-(4'-ethylphenyl)-ethyl; 1,1-diphenyl-n-butyl; 1-phenylindanyl; 3-methyl-1-phenylindanyl. All ions have two absorption peaks in the u.v. region and the most meaningful correlations and trends are found in terms of the total oscillator strengthƒ t = ƒ s + ƒ l ( s , short; l , long wavelength) and of the ratio ƒ s ƒ l . the different degrees of deshielding found in the pmr spectra (compared to those of the corresponding carbinols) give information on the charge distribution in the ions. There is a linear correlation between log δ τ (δ τ = downfield shift) and the number of bonds separating a hydrogen atom from the charged carbon atom. Both u.v. and pmr spectra show the profound changes brought about when a 1,1-diarylethyl ion is cyclised to the corresponding indanyl ion." @default.
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- W2024096979 date "1969-02-01" @default.
- W2024096979 modified "2023-09-27" @default.
- W2024096979 title "The u.v. and PMR spectra of ten related diaryl carbonium ions" @default.
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- W2024096979 doi "https://doi.org/10.1016/0584-8539(69)80041-3" @default.
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