A nitrogen-containing compound shows no absorption band at ∼3400cm-1 and no absorption bands between ∼1700cm-1 and ∼1600cm-1. what class of compound is it

By the given information the nitrogen containing compound belongs to the class of tertiary amine. Absorption band is a range of energies and frequencies in the electromagnetic spectrum. Amine is nothing but a ammonia compound that involves an organic element as a replacement for one or more H atoms.