TITLE:
Interest of Splitting the Enthalpies of Vaporization in Four Distinct Parts Reflecting the Van der Waals and the Hydrogen Bonding Forces
AUTHORS:
Paul Laffort
KEYWORDS:
Enthalpy of Vaporization, Van der Waals Intermolecular Forces, Molecular Polarity, Polar Surface Area, Gas-Liquid Chromatography, Chemo-Informatics, Olfaction
JOURNAL NAME:
Open Journal of Physical Chemistry,
Vol.10 No.2,
May
6,
2020
ABSTRACT: An experimental characterization of the Van der
Waals forces involved in volatile organic compounds (VOC) dissolved into
stationary phases of gas liquid chromatography (GLC) has been started at the
beginning of the seventies. This field has been reactivated from 1994 thanks to
a fruitful cooperation between our CNRS team and the group of Ervin Kováts at
the Federal Polytechnic
School of Lausanne. The applied strategy can be summarized, in the first
instance, as the experimental measurement of accurate and superabundant mutual
affinities of a limited number of VOC and stationary phases and their
processing using an original tool named Multiplicative Matrix Analysis (MMA).
Then, in the second stage, the obtained results have been compared with molecular
properties well established, as the Van der Waals molecular volume, the
refraction index and the polar surface area (PSA), in order to get generalized
values for any compound. The present study summarizes the positive results
developed in our three last papers on this topic (2013, 2016 and 2018), as well
as the attempt to overcome the negative ones using enthalpies of vaporization.