Sinteza in karakterizacija kobaltovih koordinacijskih spojin s piridinskimi N-donorskimi ligandi : magistrsko delo

Goričan, Ivana

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Title:	Sinteza in karakterizacija kobaltovih koordinacijskih spojin s piridinskimi N-donorskimi ligandi : magistrsko delo
Authors:	ID Goričan, Ivana (Author) ID Kristl, Matjaž (Mentor) More about this mentor... ID Ban, Irena (Comentor)
Files:	MAG_Gorican_Ivana_2022.pdf (5,21 MB) MD5: 254464305EC18AC39A711E9D8150DAB5 PID: 20.500.12556/dkum/8e65a291-a99d-4dfe-a7c0-182ff79cec65
Language:	Slovenian
Work type:	Master's thesis/paper
Typology:	2.09 - Master's Thesis
Organization:	FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:	Magistrsko delo opisuje sintezo ter karakterizacijo kobaltovih koordinacijskih spojin, pri čemer smo uporabili kobaltove soli kot vir kobalta ter piridinske N-donorske spojine, za katere smo predvidevali, da bodo prevzele vlogo ligandov. Hkrati je opisana sinteza in karakterizacija nekaterih do sedaj še nepoznanih nekoordinacijskih struktur. Poleg nove kobaltove koordinacijske spojine (2,6-dapyH+)2[Co(NCS)4] nam je v okviru eksperimentalnega dela ob pomoči ustreznih izhodnih reaktantov v primernem polarnem topilu uspelo sintetizirati že objavljeno kobaltovo koordinacijsko spojino bis(2,6-diaminopiridinijev) heksaakvakobaltov(II) disulfat dihidrat – pri obeh kompleksih so bile uporabljene piridinske N-donorske spojine prisotne le v drugi koordinacijski sferi, ne pa tudi prvi. Prav tako smo bili uspešni pri sintezi treh do sedaj še nepoznanih nekoordinacijskih struktur (kristalohidrata diaminopiridinijevega sulfata, monohidrata 2,6-diaminopiridinijevega klorida ter monohidrata 2,6-diaminopiridinijevega bromida), kar sicer ni bil prvoten cilj magistrskega dela. Uporabljena sta bila dva pristopa sintez, in sicer z mešanjem pri sobni temperaturi ter s pomočjo refluksa. Za razrešitev kristalne zgradbe izpadlih kristalov koordinacijskih spojin ter nekoordinacijskih struktur smo uporabili rentgensko monokristalno difrakcijsko analizo. Izvedene so bile tudi termogravimetrična analiza (nekaterih vzorcev, vseh izhodnih reaktantov ter sintetiziranih koordinacijskih spojin), rentgenska praškovna difrakcijska analiza (izbranih vzorcev), infrardeča spektroskopija (nekaterih izhodnih reaktantov in koordinacijskih spojin) ter magnetne meritve (koordinacijskih spojin).
Keywords:	koordinacijske spojine, kobalt, piridinski N-donorski ligandi, termogravimetrična analiza, rentgenska difrakcija
Place of publishing:	Maribor
Place of performance:	Maribor
Publisher:	[I. Goričan]
Year of publishing:	2022
Number of pages:	1 spletni vir (1 datoteka PDF (X, 93 f.))
PID:	20.500.12556/DKUM-81516
UDC:	546.732.057:544.142.3(043.2)
COBISS.SI-ID:	106728963
Publication date in DKUM:	03.05.2022
Views:	1521
Downloads:	174
Metadata:
Categories:	KTFMB - FKKT
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Licences

License:	CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International

Link:	http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:	The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:	07.04.2022

Secondary language

Language:	English
Title:	Synthesis and characterization of cobalt coordination compounds with pyridine N-donor ligands
Abstract:	The Master’s Thesis describes the synthesis and characterisation of cobalt coordination compounds, where we used cobalt salts as a source of cobalt, and pyridine N-donor compounds, which, we presumed, would take over the role of ligands. Additionally, the synthesis and characterisation of some of the unprecedented non-coordinated structures are described. In the experimental part of the thesis, beside the new cobalt coordination compound (2,6-dapyH+)2[Co(NCS)4], we succeeded in synthesizing the already published cobalt coordination compound bis(2,6-diaminopyridine) hexaaquacobalt(II) disulfate dihydrate - with both complexes we used pyridine N-donor compounds present in the second coordination sphere rather than in the first one. We also succeeded in synthesising the three unprecedented non-coordinated structures (the crystalohydrate of diaminopyridine sulfate, monohydrate of 2,6 - diaminopyridine chloride and monohydrate of 2,6-diaminopyridine bromide), although this was not the primary goal of this thesis. In the thesis, two approaches of synthesis were used: stirring at room temperature and with the help of reflux. To resolve crystal structures of the obtained coordination compounds and non-coordinated structures, we used single-crystal x-ray diffraction analysis. We also carried out thermogravimetric analysis (of some samples, all starting reactants and synthesized coordination compounds), x-ray powder diffraction analysis (of selected samples), infrared spectroscopy (of some starting reactants and coordination compounds) and magnetic measurements (of coordination compounds).
Keywords:	coordination compounds, cobalt, pyridine N-donor ligands, thermogravimetric analysis, x-ray diffraction

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