20.500.12556/RUL-113755 Nikljeve in kobaltove spojine s citronsko kislino Nickel and cobalt compounds with citric acid Sintetiziral sem eno kobaltovo(II) spojino in eno nikljevo(II) spojino z anionom citronske kisline (H4L = C6H8O7) in (CN3H6)4[Ni(HL)2](H2O)2. V obeh strukturah molekule vode in gvanidinijevi kationi stabilizirajo koordinacijsko zvrst z naboji in vodikovimi vezmi. Ti spojini sta izostrukturni s formulo (CN3H6)8[M4(L)4](H2O)8. Citratni anion je štirikrat deprotoniran 4 (L). Poskušal sem izolirati tudi druge podobne spojine, a mi nedvoumna sinteza in karakterizacija le teh ni povsem uspela. IR spektri izoliranih spojin so si zelo podobni zaradi istih sestavnih enot. Razlike se vidijo v UV-Vis spektrih, zaradi različne koordinacijske sfere in drugega kovinskega iona. Slednje je očitno predvsem pri magnetnih meritvah zaradi dveh nesparjenih elektronov pri Ni(II) oziroma treh pri Co(II), ki je visokospinski. One cobalt(II) compound and one nickel(II) compound with citric acid anion (H4L = C6H8O7) have been synthesized. Water molecules and guanidinium cations are bonded stabilizing coordination moieties via net charges and hydrogen bonds. Both compounds are isostructural (CN3H6)8[M4(L)4](H2O)8. The citrat anion in these two compounds is fourtimes deprotonated 4- (L). An isolation of other similar compounds was also tried, however no clear synthesis along with the product characterization was succesfull. IR spectra of the isolated compounds are very similar due to the same coordination moieties. The differences among them are noticed clearly in the UV-Vis spectra due to different coordination spheres as well as another metal ion. The later is obvious especially at the magnetic data for two unpaired electrons per Ni(II) or three per Co(II) the later in high spin arrangement. Nikelj kobalt citronska kislina gvanidin struktura Nickel cobalt citric acid guanidine structure true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2020-01-31 11:55:00 2020-01-31 11:55:07 2022-08-26 03:47:23 0000-00-00 00:00:00 2020 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 6000 1538523587 Zarnik_Bostjan_-_Nikljeve_in_kobaltove_spojine_s_citronsko_kislino.pdf Zarnik_Bostjan_-_Nikljeve_in_kobaltove_spojine_s_citronsko_kislino.pdf 1 EAFA8A23C5BB357298C9ACC198512685 cf4871afad9ddb29d888ecb829e5ca4e3ba8ba9ab05435aafffbc28c49c18f3b 273dda90-a1b8-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=125864 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0