Acetanilide, also known as 2-chloro-4-tert-butyl, is an odorless solid with a flake-like appearance; it has a molecular weight of 225.715 and its melting point ranges between 1100 C and 1150 C. Acetanilide is mostly used in the manufacturing of drugs and dyes; it is also used as a stabilizer in hydrogen peroxide.
Acetanilide has two bonds that are formed within its structure; these are the N-H bonds and the C=O bonds. N-H amide bonds have a stretching absorption power of above 3300cm-1, while C=O have a bending absorption power of 1700cm-1.
The frequencies at which these absorptions of IR radiation are taken in are directly related to the bonds present in the compounds. The chemical bonds in different environments will absorb varying intensities and will do so at varying frequencies. C-H, O-H, C-C, O-H, N-H all have a different IR spectra range of their own.
As chemical molecules absorb infrared radiation, their chemical bonds tend to vibrate; this vibration results in the stretching, bending or shortening of the bonds, and is what brings about the differences in the frequencies in wavelengths.Learn more about Chemistry