Theoretical B3LYP study on electronic structure of contrast agent iopamidol


Genç F., Kandemirli S. G., Kandemirli F.

Acta Chimica Slovenica, cilt.68, sa.2, ss.320-331, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 68 Sayı: 2
  • Basım Tarihi: 2021
  • Doi Numarası: 10.17344/acsi.2020.6233
  • Dergi Adı: Acta Chimica Slovenica
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Central & Eastern European Academic Source (CEEAS), Chemical Abstracts Core, EMBASE, MEDLINE, Directory of Open Access Journals, DIALNET
  • Sayfa Sayıları: ss.320-331
  • Anahtar Kelimeler: B3LYP, DFT, Electronic structure, Gaussian program, Lopamidol, Quantum chemical calculations
  • İstanbul Yeni Yüzyıl Üniversitesi Adresli: Hayır

Özet

Nonionic low-osmolar contrast agents are thought about safe for intravenous or intra-arterial administration. Iopamidol is one of the contrast agents used for diagnostic clinical computed tomography (CT) protocols last four decades years. The molecular structure of Iopamidol was calculated by the B3LYP density functional model with the LANL2DZ basis set by the Gaussian program. The natural bond orbital analysis in terms of the hybridization of atoms and the electronic structure of the title molecule have been analyzed by using the data obtained from the quantum chemical results. First-order hyperpolarizability (βtot), the dipole moment (µ) and polarizability (α) and anisotropic polarizability (∆α) of the molecule have been reported. HOMO and LUMO energies and parameters related to energies, and dipole moment, polarizability and hyperpolarizability show minor dependences on the solvent polarity. The hardness of Iopamidol decreases with increasing solvent polarity. The stability of the Iopamidol contrast agent with the hyper conjugative interactions, charge delocalization has been analyzed using natural bond orbital analysis. In addition, thermodynamic properties were obtained in the range of 200–1000 K.