20.500.12556/RUL-155104 Bakrove spojine s pirazinojsko kislino Copper compounds with pyrazinoic acid Sintetizirali smo kristalinične komplekse iz bakrovih(II) soli in pirazinojske kisline. Uporabili smo bakrov(II) nitrat, sulfat ali klorid, ki smo mu dodali pirazinojsko kislino in topilo. Sinteze so potekale v acetonitrilu, etanolu ali mešanici teh topil z vodo. V nekaterih poskusih smo dodali koncentrirano klorovodikovo, žveplovo ali dušikovo kislino in opazovali njen vpliv na potek reakcije. V večini poskusov je nastal eden izmed dveh produktov, dipirazinoatobaker(II) [Cu(pyza)$_2$] ali diakvadipirazinoatobaker(II) [Cu(H$_2$O)$_2$(pyza)$_2$]. Kompleks, v katerem se je koordinirala molekula pirazinojske kisline, je nastal le ob dodatku koncentrirane klorovodikove kisline v zmes bakrovega(II) klorida in pirazinojske kisline v acetonitrilu. Izolirali smo kompleks s formulo [CuCl$_2$(pyzaH)$_2$]·2H$_2$O. Med prekristalizacijo tega produkta v zaprtem sistemu pri nižjem tlaku je nastal kristalinični kompleks [CuCl(H$_2$O)(pyza)]$_n$. Za vse produkte smo posneli IR spektre, za nekatere vzorce pa je bila izvedena tudi termična, elementna, rentgenska praškovna in rentgenska strukturna analiza. We have synthesized crystalline complexes from copper(II) salts and pyrazinoic acid. We used copper(II) nitrate, sulfate and chloride, to which we added pyrazinoic acid and a solvent. The syntheses were done in acetonitrile, ethanol or mixtures of these solvents with water. In some experiments we also added concentrated hydrochloric, sulfuric or nitric acid and observed its effect on the reaction. Most experiments resulted in one of two products, dipyrazinoatocopper(II) [Cu(pyza)$_2$] or diaquadipyrazinoatocopper(II) [Cu(H$_2$O)$_2$(pyza)$_2$]. A complex, in which a molecule of pyrazinoic acid was coordinated, was only produced with the addition of concentrated hydrochloric acid. We isolated a complex with the formula [CuCl$_2$(pyzaH)$_2$]·2H$_2$O. During recrystallization of this product in a closed system at low pressure the crystalline complex [CuCl(H$_2$O)(pyza)]$_n$ was formed. IR spectra were recorded for all products, thermal, elemental, X-ray diffraction and X-ray structural anaylsis were also carried out for some samples. baker pirazinojska kislina koordinacijska kemija. copper pyrazinoic acid coordination chemistry true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2024-03-20 08:59:57 2024-03-20 09:00:00 2024-03-22 09:35:31 0000-00-00 00:00:00 2024 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 22905 189916931 Stopar_Andrej_-_Bakrove_spojine_s_pirazinojsko_kislino.pdf Stopar_Andrej_-_Bakrove_spojine_s_pirazinojsko_kislino.pdf 1 924DB4FE41151E6E90630E7BC501CA47 7c49a7997d77df5e568bfabf77a17f46527a520e57df5d3e4f07bd00753c7ca5 da1c9eb0-e68f-11ee-8d8c-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=181875 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0