The 100 MHz 1H n.m.r. spectra of the title compound in the nematic phase of two liquid crystals have been obtained and interpreted in terms of chemical shifts, indirect coupling constants, and direct dipolar couplings. The sign of the J values, the ratio of the interprotonic distances, and the orientation of the molecule with respect to the magnetic field have been determined.
C. A. Boicelli, A. Mangini, L. Lunazzi and M. Tiecco, J. Chem. Soc., Perkin Trans. 2, 1972, 599 DOI: 10.1039/P29720000599
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