diplomsko delo
Klara Derganc (Author), Saša Petriček (Mentor)

Abstract

Izvedli smo reakcije med cinkovim kloridom ali cinkovim acetatom dihidratom in pirazinojsko kislino (pyzaH) v različnih topilih, etanolu ali acetonitrilu. V nekaterih poskusih smo za boljše raztapljanje dodali vodo. Množinska razmerja med cinkovimi ioni in pyzaH so bila 1 : 2. Izolirali smo kristale nove spojine [ZnCl$_2$(pyzaH)$_2$·2H$_2$O] in kristale že znane spojine [Zn(H$_2$O)$_2$(pyza)$_2$], kar smo potrdili z rentgensko strukturno analizo. Nastale produkte smo okarakterizirali še z infrardečo spektroskopijo, CHN in termično analizo. Ugotovili smo, da je potekala deprotonacija pyzaH in vezava anionskega liganda pyza$^−$ na cinkov ion, če smo organskemu topilu dodali vodo.

Keywords

pirazinojska kislina;sinteza kristalov;karakterizacija;diplomske naloge;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher: [K. Derganc]
UDC: 546.47:547.86(043.2)
COBISS: 167360259 Link will open in a new window
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Downloads: 9
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Other data

Secondary language: English
Secondary title: Zinc compounds with pyrazinoic acid
Secondary abstract: We performed reactions between zinc chloride or zinc acetate dihydrate and pyrazinoic acid (pyzaH) in different solvents, ethanol or acetonitrile. In some experiments, water was added for better dissolution. The mol ratio between zinc ions and pyzaH was 1 : 2. Crystals of the new compound [ZnCl$_2$(pyzaH)$_2$·2H$_2$O] and crystals of the already known compound [Zn(H$_2$O)$_2$(pyza)$_2$] were isolated, which was confirmed by X-ray structural analysis. Infrared spectroscopy, CHN and thermal analysis were used to further characterize the resulting products. We found that the deprotonation of pyzaH and the binding of the anionic ligand pyza$^−$ to the zinc ion took place when water was added to the organic solvent.
Secondary keywords: zinc;pyrazinoic acid;coordination compounds;Koordinacijske spojine;Cink;Univerzitetna in visokošolska dela;
Type (COBISS): Bachelor thesis/paper
Study programme: 1000374
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, VSŠ Kemijska tehnologija
Pages: 27 str.
ID: 19892461