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http://dx.doi.org/10.1016/S0021-9673(00)97624-6

has been cited by the following article:

• TITLE: The Cyclization of Alkyl Side Chains of Naphthalenes: The GC/Potential Energies/FTIR Approach

  AUTHORS: Pavel Straka, Miroslava Novotná, Petr Buryan, Olga Bičáková

  KEYWORDS: Alkyl Naphtalenes, Retention Times, Molecular Mechanics, van der Waals Forces

  JOURNAL NAME: American Journal of Analytical Chemistry, Vol.5 No.14, October 29, 2014

  ABSTRACT: Gas chromatographic measurements of the retention times of alkyl naphthalenes on packed columns with polar and non-polar stationary phases have proven that the logarithm of the relative retention time increases bi-linearly (not linearly) with the number of carbon atoms in a molecule. This is caused by a strong inclination of alkyl side chains toward intramolecular cyclization. A FTIR spectral analysis has shown that longer alkyl side chains of alkyl naphthalenes are cyclized through an interaction between the terminal CH3 group and the aromatic ring. Conventional aromatic-aliphatic molecules thus become new molecules with quasi-alicyclic rings. This, however, alters the effect of non-covalent van der Waals attractive forces both inside and outside the molecules, which is reflected in an exponential increase of the retention times of alkyl naphthalenes with a side chain longer than propyl and in the bi-linearity of the logarithmic dependence of the relative retention times on the number of carbons in the molecule.