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https://open.uns.ac.rs/handle/123456789/27658| Title: | Synthesis and characterization of some pyrazole derivatives and their reactions with transition metals Sinteza i karakterizacija nekih derivata pirazola i njihove reakcije sa prelaznim metalima |
Authors: | Holló Berta | Keywords: | Complexes of Cu(II), Ni(II), Co(II), Cd(II), Zn(II), Hg(II), 3,5- dimethylpyrazole-1-carboxamidinium nitrate, 4-acetyl- 3-amino-5-methylpyrazole, N,N-bis(4-acetyl-5-methylpyrazol-3-yl)formamidine, thiosemicarbazon 4-acetyl-3-amino-5-methylpyrazole, physicochemical characterization, structure, thermal analysis;Kompleksi Cu(II), Ni(II), Co(II), Cd(II), Zn(II), Hg(II), 3,5–dimetilpirazol–1–karboksamidinijum nitrat, 4-acetil-3- amino-5- metilpirazol, N,N-bis(4-acetil-5-metilpirazol-3-il)formamidin, tiosemikarbazon 4-acetil-3-amino-5-metilpirazola, fizičko-hemijska karakterizacija, struktura, termička analiza | Issue Date: | 22-Sep-2011 | Publisher: | Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu University of Novi Sad, Faculty of Sciences at Novi Sad |
Abstract: | <p style="text-align: justify; ">Reactions of 3,5-dimethylpyrazole-1-carboxamidinium nitrate (dpca∙HNO3) and 4-acetyl-3-amino-5-methylpyrazole (aamp) with transition metals under different reaction conditions are presented. The template reaction of aamp with triethyl orthoformate (teof) in the presence of metal ion is described. Besides, condensation of aamp with thiosemicarbazide (tsc) and the coordination of its product to copper(II) ion is also described. Twelve new complex compounds are synthesized and fully characterized. The characterization of two other, already known complexes is significantly enriched. The influence of HSAB interactions between the metal ions and ligators on the structures of obtained compounds is studied. The influence of the reaction conditions on the composition, structure and quality of crystals obtained in the reactions is investigated. Compounds are characterized by structural analysis, elemental analysis, molar conductivity data, infrared spectrometry and thermal analysis. Some selected complexes are characterized by UV-Vis spectra, magnetic measurements and biological activity tests, too.</p> <p> Reactions of 3,5-dimethylpyrazole-1-carboxamidinium nitrate (dpca∙HNO3) and 4-acetyl-3-amino-5-methylpyrazole (aamp) with transition metals under different reaction conditions are presented. The template reaction of aamp with triethyl orthoformate (teof) in the presence of metal ion is described. Besides, condensation of aamp with thiosemicarbazide (tsc) and the coordination of its product to copper(II) ion is also described. Twelve new complex compounds are synthesized and fully characterized. The characterization of two other, already known complexes is significantly enriched. The influence of HSAB interactions between the metal ions and ligators on the structures of obtained compounds is studied. The influence of the reaction conditions on the composition, structure and quality of crystals obtained in the reactions is investigated. Compounds are characterized by structural<br /> analysis, elemental analysis, molar conductivity data, infrared spectrometry and thermal analysis. Some selected complexes are characterized by UV-Vis spectra, magnetic measurements and biological activity tests, too</p> |
URI: | https://open.uns.ac.rs/handle/123456789/27658 | DOI: | 10.2298/NS20110922HOLLO |
| Appears in Collections: | PMF Teze/Theses |
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