TY  - JOUR
T1  - Synthesis and Characterization of Thiophene Cyclic Schiff Base Ligand and Metal Ion Complexes
TT  - Synthesis and Characterization of Thiophene Cyclic Schiff Base Ligand and Metal Ion Complexes
AU  - Çapan, Ali
AU  - Elhac Hasan, Abdülhamid
AU  - Sönmez, Mehmet
PY  - 2025
DA  - November
Y2  - 2025
DO  - 10.34248/bsengineering.1725400
JF  - Black Sea Journal of Engineering and Science
JO  - BSJ Eng. Sci.
PB  - Karyay Karadeniz Yayımcılık Ve Organizasyon Ticaret Limited Şirketi
WT  - DergiPark
SN  - 2619-8991
SP  - 1864
EP  - 1873
VL  - 8
IS  - 6
LA  - en
AB  - In this study, a new Schiff base ligand (L) containing a thiophene ring was synthesized via the reaction of thiophene-2,5-dicarbaldehyde with 5-amino-1,3,4-thiadiazole-2-thiol. The structure of the ligand was elucidated using elemental analysis, FT-IR, NMR, and UV-Vis spectroscopy. The ligand (L) reacted with metal acetate salts [M(CH₃COO)₂; M = Cu, Co, Ni] in a 1:1 molar ratio to form metal complexes with the general formula [ML(CH₃COO)₂]•nH₂O (n = 2, 3). Structural characterization of the metal complexes was performed using elemental analysis, FT-IR, UV-Vis, TGA/DTA, electrolytic conductivity, and magnetic susceptibility measurements. Based on the obtained data, it was proposed that the Cu(II), Co(II), and Ni(II) complexes adopt a tetrahedral geometry. Moreover, the molar conductivities of the complexes were found to be in the range of 1.5–2.9 μS•cm⁻¹, indicating their non-electrolytic nature.
KW  - Thiophene
KW  - Thiadiazole
KW  - Schiff base
KW  - Metal complex
KW  - Characterization
N2  - In this study, a new Schiff base ligand (L) containing a thiophene ring was synthesized via the reaction of thiophene-2,5-dicarbaldehyde with 5-amino-1,3,4-thiadiazole-2-thiol. The structure of the ligand was elucidated using elemental analysis, FT-IR, NMR, and UV-Vis spectroscopy. The ligand (L) reacted with metal acetate salts [M(CH₃COO)₂; M = Cu, Co, Ni] in a 1:1 molar ratio to form metal complexes with the general formula [ML(CH₃COO)₂]•nH₂O (n = 2, 3). Structural characterization of the metal complexes was performed using elemental analysis, FT-IR, UV-Vis, TGA/DTA, electrolytic conductivity, and magnetic susceptibility measurements. Based on the obtained data, it was proposed that the Cu(II), Co(II), and Ni(II) complexes adopt a tetrahedral geometry. Moreover, the molar conductivities of the complexes were found to be in the range of 1.5–2.9 μS•cm⁻¹, indicating their non-electrolytic nature.
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UR  - https://doi.org/10.34248/bsengineering.1725400
L1  - https://dergipark.org.tr/tr/download/article-file/4983696
ER  -