Azobased iminopyridine ligands and their rhenium metal complexes: Syntheses, spectroscopic, trans-cis photoisomerization and theoretical studies

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Benmensour M. A., Ayadi A., Akdas-Kilig H., Boucekkine A., Fillaut J., El-Ghayoury A.

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, cilt.368, ss.78-84, 2019 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 368
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1016/j.jphotochem.2018.09.023
  • Dergi Adı: JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.78-84
  • Anahtar Kelimeler: Iminopyridine, Azobenzene, UV-vis spectroscopy, Rhenium complex, X-ray diffraction, DFT, AZOBENZENE, EXCITATION, ENERGIES, ELECTRON, DYNAMICS
  • Yıldız Teknik Üniversitesi Adresli: Hayır

Özet

The reaction of rhenium(I) pentacarbonyl chloride Re(CO)(5)Cl with N,N-dimethyl-4-((E)-(pyridin-2-ylmethylene) amino)phenyl) diazenyl) aniline L and (E)-4-((E)-(4-nitrophenyl)diazenyl)-N-(pyridin-2-ylmethylene) aniline L2 affords two rhenium metal complexes [ReL1(CO)(3)Cl] (ReL1) and [ReL2(CO)(3)Cl] (ReL2), respectively. These Re(I) complexes were characterized in detail, including their single crystal structures, absorption spectra and electronic structures using DFT calculations. Trans to cis photoisomerization of the free ligands and complexes was investigated experimentally and rationalized theoretically. Interestingly, light-induced photoisomerization of the azo fragment is observed for free ligand Ll while inhibition of this process is produced upon coordination to Re metal cation.