Turkish Journal of Chemistry
DOI
-
Abstract
Two different mononucleating ligands incorporating N_{4} and N_{2}S_{2} donor units, 2-(1,3-benzothiazole-2-yl-methyl)-1,3-benzothiazole (L^{1}) and N,N'-bis-(2-amino-phenyl)-malonamide (H_{2}L^{2}) were synthesized by a new method from malonyl dichloride as starting material, and their mononuclear copper(II) complexes were prepared and characterized by elemental analyses, ^{1}H- and ^{13}C-NMR, IR, magnetic moments and mass spectral studies. Elemental analyses, and stochiometric and spectroscopic data of the metal complexes indicate that the metal ions are coordinated to the nitrogen and sulfur atoms and the data support the proposed structure of L^{1}, H_{2}L^{2} and their mononuclear copper(II) complexes. Moreover, the copper(II) complexes of L^{1} and H_{2}L^{2} have a 1:1 metal to ligand ratio. In addition, the total energy and heat of formation calculated for complexes (2-3) by the semiempirical ZINDO/1 calculations showed that complexes 2 and 3 having penta coordinations are more stable than complexes of tetra coordinations.
Keywords
Copper(II) complexes, malonamide, benzothiazole, mononucleating ligands
First Page
87
Last Page
94
Recommended Citation
KARABÖCEK, NEVİN; KARABÖCEK, SERDAR; MAZLUM, HASAN; DEĞİRMENCİOĞLU, İSMAİL; and SERBEST, KERİM (2004) "Synthesis and Characterization of Cu(II) Complexes of Two Ligands Derived from Malonyl Dichloride," Turkish Journal of Chemistry: Vol. 28: No. 1, Article 10. Available at: https://journals.tubitak.gov.tr/chem/vol28/iss1/10