20.500.12556/RUL-172629 Magnetne lastnosti preprostih bakrovih in kobaltovih spojin Magnetic properties of simple copper and cobalt compounds Uporabil sem nekaj preprostih bakrovih in kobaltovih spojin ter jim izmeril njihov magnetni odziv na magnetni tehtnici. Te spojine so: [Cu$_4$(OH)$_6$SO$_4$]$_n$ 1, [Cu$_2$(CH$_3$COO)$_4$(H$_2$O)$_2$] 2, [Cu$_2$(C$_5$H$_{11}$COO)$_4$]$_n$ 3, [Cu$_2$(C$_8$H$_{17}$COO)$_4$]$_n$ 4, [CuCl]$_n$ 5, [Co(CH$_3$COO)$_2$(H$_2$O)$_4$] 6, [Co(NH$_3$)$_6$](Cl)$_3$ 7 in Na$_3$[Co(NO$_2$)$_6$] 8. Nekatere spojine sem sintetiziral, nekatere so bile izolirane na študentskih laboratorijskih vajah, nekatere so bile komercialne. Z IR spektri sem spojine opazoval tudi po čistosti in vrstah kemijskih vezi, ki so prisotne. Formule teh spojin sem preveril tudi po znanih strukturnih opisih večine od teh spojin. Izračuni efektivnega magnetnega momenta teh spojin se skladajo z oksidacijskim števili za 1-4, ki vsebujejo Cu(II) ter imajo njihovo antiferomagnetno sklopitev. Po drugi strani sem v spojini 6 potrdil Co(II), v 7 in 8 pa Co(III) zvrsti. Kobaltove spojine potrjujejo, da so njihovi kovinski ioni magnetno izolirani. Barva in magnetni odziv bakrove spojine 5 nakazuje, da je prišlo do oksidacije vsaj dela vzorca iz Cu(I) v Cu(II). Several simple copper and cobalt compounds were measured for their magnetic susceptibility using a magnetic balance. These compounds were: [Cu$_4$(OH)$_6$SO$_4$]$_n$ 1, [Cu$_2$(CH$_3$COO)$_4$(H$_2$O)$_2$] 2, [Cu$_2$(C$_5$H$_{11}$COO)$_4$]$_n$ 3, [Cu$_2$(C$_8$H$_{17}$COO)$_4$]$_n$ 4, [CuCl]$_n$ 5, [Co(CH$_3$COO)$_2$(H$_2$O)$_4$] 6, [Co(NH$_3$)$_6$](Cl)$_3$ 7 and Na$_3$[Co(NO$_2$)$_6$] 8. Some of these compounds were syntesized, some were isolated in the student laboratory courses, and some were commercial. IR spectra were also measured to check the purity of these compounds and for the types of chemical bonds present. The formulae of these compounds were checked against the reported structural descriptions. Calculated effective magnetic moments are consistent with the oxydation states of 1-4 having Cu(II) and exhibit antiferromagnetic coupling. On the other hand, Co(II) was confirmed for 6, while compounds 7 and 8 contain Co(III) species. All cobalt compounds confirm that their metal ions are magnetically isolated. The color and magnetic susceptibility of copper compound 5 suggest that an oxidation took place with at least a part of the sample from Cu(I) to Cu(II). baker kobalt magnetizem struktura IR copper cobalt magnetism structure IR true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2025-09-10 09:40:01 2025-09-10 09:40:06 2025-11-05 12:51:03 0000-00-00 00:00:00 2025 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 25515 255992835 Kmetic_Zan_-_Magnetne_lastnosti_preprostih_bakrovih_in_kobaltovih_spojin.pdf Kmetic_Zan_-_Magnetne_lastnosti_preprostih_bakrovih_in_kobaltovih_spojin.pdf 1 73E576E2C0BAA9B57FBEA44E75F5FD1D bf0eb934093e16a5457fbb8dec590adbd44f711e2a7c66118ed0a17a446e8b05 36a055d5-8e19-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=216595 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0