Aliphatic–aromatic stacking interactions in cyclohexane–benzene are stronger than aromatic–aromatic interaction in the benzene dimer
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Stacking interactions between cyclohexane and benzene were studied in crystal structures from the Cambridge Structural Database and by ab initio calculations. Calculated at the very accurate CCSD(T)/CBS level of theory, the cyclohexane-benzene interaction energy is -3.27 kcal mol-1, which is significantly stronger than the interaction in the benzene dimer (-2.84 kcal mol-1) indicating the importance of aliphatic-aromatic interactions.
author list (cited authors)
Ninković, D. B., Vojislavljević-Vasilev, D. Z., Medaković, V. B., Hall, M. B., Brothers, E. N., & Zarić, S. D.