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    • Keywords


      Chloro-methyl exchange; crystal engineering; close-packing; hexachlorobenzene; Cl...Cl interactions

    • Abstract


      Since chloro and methyl groups have nearly the same volume, they may be interchanged in a molecule without altering the crystal structure. Such isostructural behaviour is found when crystal stabilization is mainly through dispersive and repulsive interactions. Violations of this rule are, however, observed when directional forces or weak bonds are involved and the failure of complete chloro-methyl exchange in a substance like hexachlorobenzene, points to the importance of weakly attractive Cl...Cl interactions.

    • Author Affiliations


      Gautam R Desiraju1 Jagarlapudi A R P Sarma1

      1. School of Chemistry, University of Hyderabad, P. O. Central University, Hyderabad - 500 134, India
    • Dates

  • Journal of Chemical Sciences | News

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