Browsing by Author "M. İzzettin YILMAZER"

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    Theoretical B3LYP study of contrast agent metrizoate
    (2020-12-01) Murat SARAÇOĞLU; S. Giray KANDEMİRLİ; Fatma KANDEMİRLİ; M. İzzettin YILMAZER
    Metrizoic acid is a molecule used as meglumine metrizoate, sodium metrizoate contrast agent. 6 Isopak 44o* is a contrast medium containing a mixture of sodium, calcium, magnesium and N-methylglucamine salts of metrizoic acid. In order to determine the reactivity properties of metrizoic acid, melagnomie, anionic form of metrizoate, Metrisoate K, metrizoate-melagnomie salt, and Na-metrizoate, DFT calculations were made in gas and water phses at the level of B3LYP/LANL2DZ with the help of Gaussian 09 software. Some global chemical reactivity descriptors such as highest occupied molecular orbital energy, lowest empty molecular orbital energy, absolute hardness, chemical potential, softness, electronegativity, chemical potential, global electrophilicity and electrofugality were calculated. Moreover, nonlinear optical properties of the title compound were calculated too. In addition, thermodynamic properties of the molecules examined at different temperatures were calculated in gas and water phases. The findings of this study, obtained from extensive and time-consuming calculations and analyses, will be an important source of information for the preparation of the drug combination in the future.
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    Theoretical B3LYP Study on Electronic Structure of Contrast Agent Iopromide
    (2020-12-01) M. İzzettin YILMAZER; Giray Sedat KANDEMİRLİ; Murat SARAÇOĞLU; Fatma KANDEMİRLİ
    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.