Abstract
In this work, the synthesis and complexation properties of a new compound, 1,3-bis[5-(2-hydroxyphenyl)-4-phenyl- 1,2,4-triazole-3-yl-thio]propane (BTP), towards certain transition metal ions, (M(II) where M = Zn, Cu, Ni) in acetonitrile is reported. A hard-modeling strategy was applied to UV-Visible spectroscopy data obtained from monitoring the reaction between BTP and the selected metal ions to determine the concentration profiles of each species and the corresponding stability constant(s) of the complex(es). The stability constants of complexes are always defined in terms of their free metal, free ligand and complexed forms. These constants are influenced by parameters such as the type of metal, ligand, counterion or solvent. In this study, the formation constants of the complexes were determined for the synthesized ligand with several metallic cations in acetonitrile solvent by UV-Vis spectrophotometry.
Highlights
The synthesis and metal complex structures of substituted 1,2,4-triazole ligands have gained considerable attention in recent years [1,2,3,4,5]. 1,2,4-triazole and its derivatives are very interesting ligands because they combine the coordination geometry of both pyrazole and imidazole with regard to the arrangement of their three heteroatoms
A hard-modeling strategy was applied to UV-Visible spectroscopy data obtained from monitoring the reaction between BTP and the selected metal ions to determine the concentration profiles of each species and the corresponding stability constant(s) of the complex(es)
The formation constants of the complexes were determined for the synthesized ligand with several metallic cations in acetonitrile solvent by UV-Vis spectrophotometry
Summary
The synthesis and metal complex structures of substituted 1,2,4-triazole ligands have gained considerable attention in recent years [1,2,3,4,5]. 1,2,4-triazole and its derivatives are very interesting ligands because they combine the coordination geometry of both pyrazole and imidazole with regard to the arrangement of their three heteroatoms. The synthesis and metal complex structures of substituted 1,2,4-triazole ligands have gained considerable attention in recent years [1,2,3,4,5]. Many transition metal complexes of 1,2,4-triazoles derivatives can be synthesized [6]. Substituted 1,2,4-triazoles have been actively studied as bridging ligands between transition metal(II) ions coordinating through their N1 and N2 atoms. The design and construction of coordination ligands using the 1,2,4triazole moiety as a part of a ligand system has gained great attention in recent years [8]. The complexes of 1,2,4triazole and its derivatives are good candidates for the construction of various metal coordination polymers [9,10,11,12,13]
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