Molecular Structure, Vibrational Spectral Studies, NLO Properties and frontier molecular investigations of 2-Chloro-6-Fluoro Benzaldehyde by DFT

Abstract

Benzaldehyde and its derivatives are the simplest in aromatic aldehydes and have wide range of use in different industries. Due to this reason, there exist a vast field of study of substituted benzaldehydes. Quantum mechanical calculations of geometries, energies, vibrational wave numbers and thermodynamic constants have been performed with Gaussian 09 program package using the beece-3-Lee-Yang-Parr- (B3LYP) functional supplemented with the standard 6-31G (DP). The optimized geometrical parameters obtained by computational methods. The thermodynamic properties as heat capacity, entropy and enthalpy of the titled compounds are derived also dipole moment, Polarizability and hyperpolarizability are calculated along with brief study of HOMO-LUMO is done.