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https://open.uns.ac.rs/handle/123456789/12226
Title: | Transition metal complexes with pyrazole-based ligands. Part 8. Characterization and thermal decomposition of zinc“II” complexes with di- and trisubstituted pyrazoles | Authors: | Meszaros K. Leovac, Vukadin Jacimovic Z. Češljević, Valerija Kovacs A. Pokol G. Gal S. |
Issue Date: | 1-Jan-2001 | Journal: | Journal of Thermal Analysis and Calorimetry | Abstract: | We report the synthesis and the characterization “elemental analysis, FT-IR spectroscopy, thermal methods and molar conductivity measurements” of the mixed complexes of zinc with acetate and 3-amino-5-methylpyrazole, HL1, [Zn“OAc”2“HL1”2], or 3-amino-5-phenylpyrazole, HL2, [Zn“OAc”2“HL2”2], or 4-acetyl-3-amino-5-methylpyrazole, HL3, [Zn“OAc”“L3”“HL3”]2, with isothiocyanate and HL2, [Zn“SCN”2“HL2”2], or HL3, [Zn“SCN”2“HL3”2], and with nitrate, isothiocyanate and 3,5-dimethyl-1-carboxamidinepyrazole, HL4, [Zn“NO3”“NCS”“HL4”2]. The thermal decomposition of the complexes is generally continuous resulting zinc oxide as end product, except [Zn“OAc”“L3”“HL3”]2, in which case a well-defined intermediate was observed between 570-620 K. On the basis of the IR spectra and elemental analysis data of the intermediate a decomposition scheme is proposed. | URI: | https://open.uns.ac.rs/handle/123456789/12226 | ISSN: | 14182874 | DOI: | 10.1023/A:1010135903480 |
Appears in Collections: | Naučne i umetničke publikacije |
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