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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/092/04-05/0449-0456

    • Keywords

       

      X-ray structure analysis; push-pull ethylenes; C=C bond lengths; rotational barriers

    • Abstract

       

      From structural data of several crystal structure analyses of push-pull ethylenes it is found that C=C bond lengths in this class of molecules are significantly longer than the value for this bond in ethylene. With powerful donors and acceptors such as -NMe2 and -COOMe groups respectively, the C=C bond length is as long as 1.460 å. Correlations are observed between (i) C=C bond lengths and the twist angles about the C=C bond and (ii) C=C bond lengths and the torsional barrier measured by thednmr technique.

    • Author Affiliations

       

      D Adhikesavalu1 Nirupa U Kamath1 K Venkatesan1

      1. Department of Organic Chemistry, Indian Institute of Science, Bangalore - 560012, India
    • Dates

       
  • Journal of Chemical Sciences | News

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