20.500.12556/RUL-116207 Kobaltove spojine z benzojsko kislino Cobalt compounds with bezoic acid Sintetizirala sem tri kobaltove(II) koordinacijske spojine z anionom benzojske kisline (C7H6O2 = HL) iz izhodnega kobaltovega(II) nitrata heksahidrata. V dveh primerih sem uporabila tudi dodaten nevtralen dušikov donorski ligand nikotinamid oziroma 2-aminopiridin. Kot topilo sem uporabila vodo ali acetonitril. Nastale so spojina Co(L)(OH) 1, spojina [Co(L)2(C6H6N2O)2(H2O)2] 2 in spojina [Co(L)2(C5H6N2)2] 3. Prisotnost Co(II) pri vseh spojinah je najbolj jasna v UV-Vis spektru s trakom pri 500 nm. V IR spektrih opazimo O-H in N-H trakove nad 3000 cm-1 za različne dodatne ligande poleg benzoatnega aniona. Nižja vrednost magnetnega momenta pri spojini 1 od ostalih dveh se sklada z UV delom UV-Vis spektra, saj nakazuje drugačno, verjetno mostovno povezavo ligandov pri tej spojini. Three coordination compounds with benzoic acid anion (C7H6O2 = HL) were synthesized using cobalt(II) nitrate hexahydrate. A neutral nitrogen donor ligands nicotinamide and 2-aminopyridine were additionally added in two cases. Either water or acetonitrile were applied as a solvent. Thus, Co(L)(OH) 1, [Co(L)2(C6H6N2O)2(H2O)2] 2 and [Co(L)2(C5H6N2)2] 3 compounds were isolated. A Co(II) presence in all compounds is most clearly visible within UV-Vis spectra with a band ati 500 nm. The IR spectra reveal O-H and N-H bands above 3000 cm-1 due to different additional ligands besides the initial benzoat anion. A lower magnetic moment value for the compound 1 compared to the others, is in agreement with the UV section of the UV-Vis spectra, suggesting different, probably bridging ligand coordination, only for this compound. kobalt(II) benzojska kislina nikotinamid 2-aminopiridin acetonitril voda cobalt(II) benzoic acid nicotinamide 2-aminopyridine acetonitrile water true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2020-05-23 00:55:06 2020-05-23 00:55:11 2022-08-28 03:47:39 0000-00-00 00:00:00 2020 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 6021 16697091 Marinc_Nika_-_Kobaltove_spojine_z_benzojsko_kislino.pdf Marinc_Nika_-_Kobaltove_spojine_z_benzojsko_kislino.pdf 1 3A1F515D39197EF8E4F4348997649CBC 541cbf945ed2e303c7bffabe92266ef06b8854e14db9c0252c87bd52a03932bd d677ef91-a1b8-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=129627 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0