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. 2020 Dec 23;11(1):307–319. doi: 10.1039/d0ra08053e

Vibrational modes of guanidinium salicylate.

Mode Exp. Simu. Description
Fre. (THz) Fre. (THz) Int. (Debye^2)
a 0.749 0.732 17.27 Translation of all atoms caused by interdimer hydrogen bond
b 1.331 1.319 15.59 Butterfly of molecule caused by intermonomer hydrogen bond
c 1.47 1.547 4.18 Intramonomer torsion of salicylate
d 1.664 1.589 61.55 Torsion of carboxyl group caused by interdimer hydrogen bonds
e 1.856 28.64 Intramonomer torsion of carboxyl group
f 1.97 1.96 43.84 Bend of molecule caused by intermonomer hydrogen bond
g 2.358 2.35 72.99 Intramonomer bend of salicylate
h 2.413 2.382 7.01 Rock of molecule caused by interdimer hydrogen bond