secondary and tertiary amines, the symmetrical CH2 stretching frequency of the CH2 group next to nitrogen atom, in addition to being
intensified, becomes lower in frequency appearing near
2800 cm1. Hence, for N-(2-hydroxyethyl)piperazine-1,4-diium,
the CH stretching bands of medium intensity have been assigned
to the wave numbers 3058, 2980, 2855 and 2770 cm1.