Synthesis and spectral characterization of 1,2-bis(5-methyl/chloro-1H-benzimidazol-2-yl)ethanols and their Co(II), Pd(II) and Zn(II) complexes

Tavman, AYDIN; Gurbuz, DEMET; Cinarli, ADEM

doi:10.2298/jsc180123046t

Synthesis and spectral characterization of 1,2-bis(5-methyl/chloro-1H-benzimidazol-2-yl)ethanols and their Co(II), Pd(II) and Zn(II) complexes

Tavman A., Gurbuz D., Cinarli A.

Journal of the Serbian Chemical Society, cilt.83, sa.10, ss.1099-1112, 2018 (SCI-Expanded, Scopus)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 83 Sayı: 10
Basım Tarihi: 2018
Doi Numarası: 10.2298/jsc180123046t
Dergi Adı: Journal of the Serbian Chemical Society
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Sayfa Sayıları: ss.1099-1112
Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
İstanbul Üniversitesi-Cerrahpaşa Adresli: Hayır

Özet

© 2018 Serbian Chemical Society. All rights reserved.1,2-Bis(5-methyl/chloro-1H-benzimidazol-2-yl)ethanols (1 and 2), asymmetric bis-benzimidazoles, and their complexes with CoCl2, PdCl2 and ZnCl2 were synthesized and characterized by elemental analysis, molar conductivity, magnetic moment, TGA, FT-IR (mid- and far-IR), FT-Raman, 1H- and 13C-NMR spectroscopy, ESI-MS and fluorescence spectroscopy. The spectral data suggest that the chiral chelating ligands acted as tridentate through both the C=N nitrogen and OH oxygen atoms. According to the molar conductance, the Zn(II) complexes are non-electrolyte whereas the Co(II) complexes are 1:2 and the Pd(II) complexes are 1:1 electrolytes. The ligands and most of the complexes show triple fluorescence in ethanol. In addition, the Zn(II) complex of 1 (1c) shows significant fluorescence characteristics compared to the other complexes.