Investigation of quantum-chemical properties of nimesulide

Abstract

Nimesulide is a widely used drug in pain and fever treatment. The quantum-chemical study of nimesulide molecule is very important for understanding the mechanisms of its biological and pharmacological activity at a molecular level. The geometry optimization of nimesulide molecule was performed by PM3 method, Polak-Ribiere algorithm. The following quantum-chemical properties were investigated in this work: geometrical struc-ture, atomic charges, high occupied and low unoccupied molecular orbital energies and total charge density of nimesulide molecule.