Molecular Bond Vibrations in IR Spectroscopy

Molecular bond vibrations can be modeled with IR spectroscopy using Hooke’s law. A covalently bonded heteronuclear diatomic molecule is treated like two masses connected by a spring. The atoms act like the masses, and the bond acts like the spring.

Hooke’s law links the vibrational frequency to t...

Hooke's law models atoms in a covalently bonded molecule as two vibrating masses connected by a spring, allowing their vibrational frequencies to be determined using an equation based on this principle.

The final equation is obtained by removing the Avogadro's number from the denominator of the reduced mass expression, and taking its squa...