20.500.12556/RUL-149159 Kobaltove spojine s pirazinojsko kislino Cobalt compounds with pyrazinoic acid Izvedla sem reakcije med pirazinojsko kislino (pyzaH) in kobaltovim(II) kloridom heksahidratom ali kobaltovim(II) sulfatom heptahidratom v etanolu ali acetonitrilu pri temperaturah od 40 °C do 70 °C. Sinteze so potekale v čašah ali v inertni atmosferi v Schlenkovih bučkah. Izolirala sem kristale novega kobaltovega(II) kompleksa s pirazinojsko kislino [CoCl2(pyzaH)2]n.2nH2O in kristale znane spojine z anionom pyza, [Co(H2O)2pyza2]. Molekule pirazinojske kisline so se vezale na kobaltove(II) ione, če je bila v reakcijski zmesi prisotna klorovodikova kislina, anioni pyza pa v prisotnosti vode. Sestavo in strukturo produktov sem določila z infrardečo spektroskopijo, CHN analizo, rentgensko strukturno analizo in termično analizo. Reactions were carried out between pyrazinoic acid (pyzaH) and cobalt(II) chloride hexahydrate or cobalt(II) sulfate heptahydrate in ethanol or acetonitrile at temperatures ranging from 40 °C to 70 °C. The syntheses were conducted in beakers or under an inert atmosphere in Schlenk flasks. Crystals of a new cobalt(II) complex with pyrazinoic acid, [CoCl2(pyzaH)2]n.2nH2O, were isolated, as well as crystals of a known compound containing the pyza anions, [Co(H2O)2pyza2]. The cobalt(II) ions were bound to pyrazinoic acid molecules in the presence of hydrochloric acid in the reaction mixture, while the pyza anions were formed in the presence of water. The composition and structure of the products were determined utilizing infrared spectroscopy, elemental CHN analysis, X-ray structural analysis, and thermal analysis. koordinacijska spojina kobalt pirazinojska kislina struktura coordination compound cobalt pyrazinoic acid structure true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2023-09-05 07:40:00 2023-09-05 07:40:03 2023-10-06 11:25:23 0000-00-00 00:00:00 2023 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 22795 165446147 Papez_Natalija_-_Kobaltove_spojine_s_pirazinojsko_kislino.pdf Papez_Natalija_-_Kobaltove_spojine_s_pirazinojsko_kislino.pdf 1 C099FAC65F452B83BB0EC00EE0D0204F 229c0f2b8f1f457debee6beda25be85d46d15a38e21e9c82f312922225ae7178 a6ed5087-4bae-11ee-af86-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=173554 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0