Nematic phase nuclear magnetic resonance spectra and vibrationally averaged structures of cyclopropyl chloride, bromide, and cyanide

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Abstract
The nmr spectra of partially oriented cyclopropyl chloride, bromide, and cyanide have been analysed and the relative proton structure corrected for vibrational effects. The proton structures provide indirect evidence in support of Hoffmann's theory of substituent effects in cyclopropane rings. The distance between protons on the same side of the ring as the substituent is less than the corresponding distance on the other side. The direction of the principal orientation axis in two nematic solvents EBBA and MBBA is the same but the anisotropy of alignment is less in MBBA.

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