intermolecular forces Flashcards
what is a van der waals complex
A weakly bonded complex of atoms/molecules held together by VDW forces or H bonds
Molecular Dynamics (MD)
calculating a particles motion if the force is known
work done by a force on a particle
force x distance moved
potential energy
the energy possesed by a body due to its position relative to others
conservative force
A force with the property that the work done in moving a partice between 2 points is independent of the path takesn
molecular bean scattering
using a beam of what youre studying and helium and then calculating the number of particles being detected relative to the angle, only gives info on distance not orientation
C.M.
distance to the Centre of Mass of the molecule
equation of state
an equation which relates 2 or more state functions associated with the matter e.g. temp, pressure
state variable
A variable used to describe the state of a dynamic system
virial equation of state
convention of the ideal gas constant
boyle temp (TB)
from virial equation of state, where B function = 0
partial atomic charge q
represents the molecular charge distribution by an arrangement of atomic charges throughout the molecule
long range interaction
interaction with energy proportional to 1/r
additivity
interaction between a and b which is not affected by a third party c
madelung constant (>0)
used to determine the electrostatic potential of a single ion in a crystal by approximating the ions by point charges
