Proceedings of the Indian Academy of Sciences - Chemical Sciences

, Volume 92, Issue 4, pp 449–456

Crystallographic study of push-pull ethylenes

  • D. Adhikesavalu
  • Nirupa U. Kamath
  • K. Venkatesan
Crystallography

DOI: 10.1007/BF02839148

Cite this article as:
Adhikesavalu, D., Kamath, N.U. & Venkatesan, K. Proc. Indian Acad. Sci. (Chem. Sci.) (1983) 92: 449. doi:10.1007/BF02839148

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.

Keywords

X-ray structure analysispush-pull ethylenesC=C bond lengthsrotational barriers

Copyright information

© Printed in India 1983

Authors and Affiliations

  • D. Adhikesavalu
    • 1
  • Nirupa U. Kamath
    • 1
  • K. Venkatesan
    • 1
  1. 1.Department of Organic ChemistryIndian Institute of ScienceBangaloreIndia