Naslov
Preparation and characterization of pseudohalide complexes with selected metals and pyridinecarboxamides

Autori
Đaković, Marijana

Vrsta, podvrsta i kategorija rada
Ocjenski radovi, doktorska disertacija

Fakultet
Prirodoslovno-matematički fakultet

Mjesto
Zagreb

Datum
04.12

Godina
2008

Stranica
211

Mentor
Popović, Zora

Ključne riječi
pyridinecarboxamides / CoII / NiII / CuII / ZnII / CdII / HgII / pseudohalides / infrared spectroscopy / thermal analysis / crystal and molecular structure / hydrogen bonds

Sažetak
Reactions of the metal(II) nitrates (metal(II) = Co, Ni, Cu, Zn, Cd and Hg) with potassium thiocyanate and pyridinecarboxamides (pyridine- 2-carboxamide, pyridine-3-carboxamide and pyridine-4-carboxamide), of the metal(II) nitrates with sodium azide and pyridine-2- carboxamide, as well as of the metal(II) nitrates with sodium cyanate and pyridine-2- carboxamide were investigated. The reactions were carried out in water and ethanol. Twenty eight new complexes were isolated. All complexes were characterized by chemical analysis, infrared spectroscopy and thermal analysis. The compounds soluble in DMSO were investigated in solution by 1H and 13C NMR spectroscopy. All prepared thiocyanate complexes, cobalt, nickel and zinc azide complexes with pyridine-2-carboxamide, as well as the zinc cyanate complex with pyridine-2- carboxamide were structurally characterized. The structural characterization was achieved by the single crystal X-ray diffraction method. The coordination of pyridinecarboxamide through the nitrogen atom from pyridine ring was found in all prepared complexes. The N, O-chelating coordination was observed in all complexes with pyridine-2-carboxamide, while N, N-chelating coordination just in copper and nickel complexes with pyridine-2-carboxamide prepared hydrothermally if azide or cyanate were present in solution.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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