Logo of Phonon Benzoic acid

M.R.Johnson and H.P.Trommsdorff,
Dispersion of vibrational modes in benzoic acid crystals
Chem.Phys.Lett., August (2002).

Crystal: Benzoic acid
Software: VASP
Space groups: monoclinic P2_1/c (Z=4)
Lattice constants: a=5.393, b=5.003, c=21.689, beta=98.51 deg.
Supercell: monoclinic 2x2x1
Pseudopotentials: ultrasoft
k-points: 1x1x1

Phonon dispersion relations of internal modes in benzoic acid. These modes are usually considered as dispersionless.

Phonon Dispersion Curves of benzoic acid