Quantum chemical studies on some imidazole derivatives as corrosion inhibitors for iron in acidic medium

Bereket G., Hur E., Ogretir C.

JOURNAL OF MOLECULAR STRUCTURE-THEOCHEM, cilt.578, ss.79-88, 2002 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 578
  • Basım Tarihi: 2002
  • Doi Numarası: 10.1016/s0166-1280(01)00684-4
  • Dergi Adı: JOURNAL OF MOLECULAR STRUCTURE-THEOCHEM
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.79-88
  • Anahtar Kelimeler: imidazole derivatives, corrosion inhibitor, semiemprical methods, quantum chemical calculations, STEEL CORROSION, CINNAMALDEHYDE, HCL
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

In this work, computational studies on some imidazole derivatives which behave as corrosion inhibitors at various levels for iron in hydrochloric acid were carried out in gaseous and aqueous phases using semiemprical methods such as MINDO/3, MNDO, PM3 and AM1. Possible correlations between experimentally obtained inhibition efficiencies and calculated highest occupied molecular energy level (E-HOMO), lowest unoccupied molecular energy level (E-LUMO) and the differences between highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energies (E-LUMO - E-HOMO) were studied. Correlation between inhibition efficiencies and total charges (Z) of molecules, were also investigated. Regression analysis were performed on inhibition efficiencies (P), (E-HOMO) and (E-LUMO) energies of the studied molecules. (C) 2002 Elsevier Science B.V. All rights reserved.