TITLE:
Updated Definition of the Three Solvent Descriptors Related to the Van der Waals Forces in Solutions
AUTHORS:
Paul Laffort
KEYWORDS:
Van der Waals Intermolecular Forces, Solvent Descriptors, Gas Liquid Chromatography, Chemo Informatics, Multiplicative Matrix Analysis
JOURNAL NAME:
Open Journal of Physical Chemistry,
Vol.8 No.1,
January
25,
2018
ABSTRACT: Innovative viewpoint on
the older topic of the van der Waals forces, is of interesting and significant
issue to be concerned in both the fields related to the fundamental
investigation and thus valuable in guiding the new physiochemical phenomena and
processes for both academic research and practical applications. The
intermolecular Van der Waals forces involved in solutions have been recently
deeply reconsidered as far as the solute side is concerned. More precisely, the
solute descriptors (or parameters) experimentally established, have been
accurately related to molecular features of a Simplified Molecular Topology. In
the present study, an equivalent result is reached on the solvent side. Both experimental
parameters have been obtained simultaneously in previous Gas Liquid
Chromatographic studies for 121 Volatile Organic Compounds and 11 liquid
stationary phases, via an original Multiplicative Matrix Analysis. In that
experimental step, five groups of forces were identified,
two of hydrogen bonding and three of Van der Waals: 1) dispersion (London), 2) orientation or polarity
strictly speaking (Keesom), and 3) induction-polarizability
(Debye). At this stage, an attempt of characterization the solvent parameters
via the SMT procedure has been limited to those related to the Van der Waals
forces, those related to the hydrogen bonding being for now left aside.