The frequencies and intensities of the bands of the infrared and Raman
spectra of procaine were recorded and compared with those obtained th
eoretically by the AM1 semiempirical method. All the stable conformati
ons and optimum parameters were also calculated by AM1. The computed b
ond lengths, bond angles and torsional angles were compared with those
reported by x-ray diffraction. Some general conclusions are discussed
. The charge and electron distributions of the structure were also inv
estigated.