Theoretical B3LYP Study on Electronic Structure of Contrast Agent Iopromide

Abstract

The molecular structure of iopromide was determined by DFT calculations at B3LYP/CEP-121G and PBE/TZP levels. Electronic, structural, and thermodynamic properties, magnetic moment, static and dynamic polarizability (α and Δα) and hyperpolarizability (β, γ) of iopromide compound were determined by using B3LYP method with the CEP-4G, CEP-31G, CEP-121G, DGDZVP and LANL2DZ basis sets in gas phase and different solvents such as chloroform, acetic acid, ethanol, DMF, DMSO, water with the assistance of Gaussian 09 software. The effect of solvent on parameters has been studied. Time dependent density functional theory (TD-DFT) has also been used to calculate the optical absorption spectrum of iopromide in gas phase and in different solvents.