Illustrated Glossary of Organic Chemistry
Non
covalent
molecular
force (non
covalent
molecular
interaction; van der Waals forces):
The attractive or repulsive force between atoms and/or
molecules
, other than
covalent bonding
. Includes (but not limited to)
anion-cation
,
dipole-dipole
,
hydrogen bonding
,
London forces
,
cation-pi
,
ion-dipole
, and
aromatic stacking
(
pi stacking
). Until recently, the terms 'van der Waals force' and '
London force
' were used interchangeably, but now 'van der Waals force' is a broad term which refers collectively to all non
covalent
forces that operate in a given circumstance.
Add energy
Liquid
water
Water
vapor
Evaporation
of
water
requires disruption of two non
covalent
molecular
forces:
hydrogen bonding
(a type of
dipole-dipole
interaction) and
London forces
.
Related terms:
Boiling point
,
bp
,
evaporate
,
vaporize
,
vaporization
,
gas phase
,
distillation
,
sublimation
,
melting point
,
mp
,
solubility
,
hydrophobic
,
hydrophilic
,
lipophobic
,
lipophilic
,
hydrophobic effect
Wikipedia entry
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