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.
