• C L Khetrapal

      Articles written in Journal of Chemical Sciences

    • The structure of and the internal rotation in N,N-dimethyl uracil

      C L Khetrapal A C Kunwar

      More Details Abstract Fulltext PDF

      From the protonnmr spectra of N,N-dimethyl uracil oriented in two different nematic solvents, the internal rotation of the methyl groups about the N-C bonds is studied. It has been observed that the preferred conformation of the methyl group having one carbonyl in the vicinity is the one where a C-H bond is in the ring plane pointing towards the carbonyl group. The results are not sensitive to the mode of rotation of the other methyl group. These data are interpreted in terms of the bond polarisations.

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