20.500.12556/RUL-173073 Izolacija bakrovih heksanoatov iz vodnih raztopin. Topnost in zaščita lesa. Isolation of copper hexanoates from aqueous solutions. Solubility and wood protection. Pripravil sem štiri vodne sisteme z bakrovim(II) acetatom in natrijevih heksanoatom L$^1$ ter štirimi različnimi piridinskimi dodatki (2-aminopiridin L$^2$, 2-hidroksipiridin L$^3$, 3-hidroksipiridin L$^4$ in nikotinamid L$^5$). Vse sem pripravil pri petih različnih koncentracijah. Pri L$^3$ se le-ta ne veže v trdne produkte, a iz barve in IR spektrov sklepam, da se izloči turkizno-zelena [Cu$_2$(L$^1$)$_4$]$_n$. Pri L$^4$ nastane modra [Cu(L$^1$)$_2$(L$^4$)$_2$]$_n$ . Spojinam z L$^2$ se struktura razlikuje med modro [Cu(L$^1$)$_2$(L$^2$)$_2$] pri najvišji koncentraciji, zeleno Cu(L$^1$)$_2$(L$^2$) in nato turkizno [Cu$_2$(L$^1$)$_4$]$_n$ pri najnižji koncentraciji. Modre spojine z L$^5$ imajo verjetno formulo Cu(L$^1$)$_2$(L$^5$)$_2$. Za uporabo pri zunanjih pogojih (spiranje) bi uporabil spojino z L$^4$ ali pa brez piridinskega liganda, ker sta ti najslabše topni v vodi. Ker imata različni strukturi, bi lahko ocenili tudi ta vpliv. Slabšo topnost (boljši zaščitni nanos) povezujem s polimerno naravo znanih spojin v teh sistemih. Four aqueous systems with copper(II) acetate and sodium hexanoate L$^1$, differing in pyridine derivatives (2-aminopyridine L$^2$, 2-hydroxypyridine L$^3$, 3-hydroxypyridine L$^4$, and nicotinamide L$^5$) were prepared. These were applied at five different concentrations. Due to the observed color and IR spectra of the solid products it is estimated that L$^3$ does not bind, but turquoise-green [Cu$_2$(L$^1$)$_4$]$_n$ is precipitated. Blue [Cu(L$^1$)$_2$(L$^4$)$_2$]$_n$ was obtained with L$^4$. The structure varies between blue [Cu(L$^1$)$_2$(L$^2$)$_2$] at the highest concentration, green [Cu(L$^1$)$_2$(L$^2$)], and then turquoise [Cu$_2$(L$^1$)$_4$]$_n$ at the lowest concentration for the L$^2$ system. The blue compounds with L$^5$ have an estimated formula Cu(L$^1$)$_2$(L$^5$)$_2$. The data obtained suggests the compound with L$^4$ or without the pyridine derivative, as they are the least soluble in water, would be most suitable for outdoor conditions. From their different structures, also this aspect may be estimated. Lower solubility (better protection layer) may well be associated with the polymeric nature of the known compounds in these systems. heksanoat topnost voda piridinski ligandi baker hexanoate solubility water pyridine ligands copper true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2025-09-12 13:30:00 2025-09-12 13:30:06 2025-11-18 13:14:31 0000-00-00 00:00:00 2025 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 25516 257625859 Lampret_Urban_-_Izolacija_bakrovih_heksanoatov_iz_vodnih_raztopin._Topnost_in_zascita_lesa..pdf Lampret_Urban_-_Izolacija_bakrovih_heksanoatov_iz_vodnih_raztopin._Topnost_in_zascita_lesa..pdf 1 116F60EB74398779773E71D425489C77 937c2c541a6b6ecfbf74b60cf5a746179909295a5413a5a056b505ffddc380f5 ab531cd8-8fcb-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=217241 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0