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master's thesis
Termodinamika kompleksiranja alkalijskih kationa s amidnim derivatom kaliks[4]arena
Zagreb: University of Zagreb, Faculty of Science, 2018. urn:nbn:hr:217:136881
Cvetnić, Marija
University of Zagreb
Faculty of Science
Department of Chemistry

Institutional repository: Repository of the Faculty of Science

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Cvetnić, M. (2018). Termodinamika kompleksiranja alkalijskih kationa s amidnim derivatom kaliks[4]arena (Master's thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:136881

Cvetnić, Marija. "Termodinamika kompleksiranja alkalijskih kationa s amidnim derivatom kaliks[4]arena." Master's thesis, University of Zagreb, Faculty of Science, 2018. https://urn.nsk.hr/urn:nbn:hr:217:136881

Cvetnić, Marija. "Termodinamika kompleksiranja alkalijskih kationa s amidnim derivatom kaliks[4]arena." Master's thesis, University of Zagreb, Faculty of Science, 2018. https://urn.nsk.hr/urn:nbn:hr:217:136881

Cvetnić, M. (2018). 'Termodinamika kompleksiranja alkalijskih kationa s amidnim derivatom kaliks[4]arena', Master's thesis, University of Zagreb, Faculty of Science, accessed 20 November 2024, https://urn.nsk.hr/urn:nbn:hr:217:136881

Cvetnić M. Termodinamika kompleksiranja alkalijskih kationa s amidnim derivatom kaliks[4]arena [Master's thesis]. Zagreb: University of Zagreb, Faculty of Science; 2018 [cited 2024 November 20] Available at: https://urn.nsk.hr/urn:nbn:hr:217:136881

M. Cvetnić, "Termodinamika kompleksiranja alkalijskih kationa s amidnim derivatom kaliks[4]arena", Master's thesis, University of Zagreb, Faculty of Science, Zagreb, 2018. Available at: https://urn.nsk.hr/urn:nbn:hr:217:136881

Metadata
TitleTermodinamika kompleksiranja alkalijskih kationa s amidnim derivatom kaliks[4]arena
Title (english)Thermodynamics of Alkali-Metal Cation Complexation with Calix[4]arene amide derivative
AuthorMarija Cvetnić
MentorJosip Požar (mentor)
Committee memberJosip Požar (predsjednik povjerenstva)
Committee memberIvana Biljan (član povjerenstva)
Committee memberVladimir Stilinović (član povjerenstva)
Committee memberNikola Bregović (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Science
(Department of Chemistry)
Zagreb
Defense date and country2018-09-28, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Abstract
U okviru rada istražena je termodinamika kompleksiranja alkalijskih kationa s amidnim derivatima kaliks[4]arena koji na donjem obodu sadrže triazolne (L) i triazolno-glukozne (l1) podjedinice. Ravnoteže reakcija kompleksiranja proučavane su u acetonitrilu (MeCN), metanolu (MeOH) (spoj L) te N,N-dimetilformamidu (DMF) (oba spoja). Inkluzija molekula otapala u kompleks NaL+ ispitana je u kloroformu. Receptori vrlo dobro vežu alkalijske katione u svim otapalima, a najveći afinitet pokazuju za ion natrija. Reakcije kompleksiranja entalpijski su kontrolirane, a standardna reakcijska entropija pozitivna je samo za kompleksiranje Li+ u acetonitrilu. Vezanje kationa s kaliksarenom L najpovoljnije je u MeCN, a najmanje povoljno u DMF. Termodinamički parametri kompleksiranja u dva otapala upućuju na slab utjecaj glukoznih podjedinica na ravnoteže istraživanih reakcija. Opaženi utjecaj otapala na istražene reakcije može se djelomično protumačiti solvatacijom kationa i inkluzijom otapala u šupljinu kompleksa.
Abstract (english)
The complexation of alkali-metal cations with tertiary-amide lower rim calix[4]arene derivatives containing triazole (L) and triazole-glucose (l1) moities was explored in acetonitrile, methanol (compund L), and N,N-dimethylformamide (both receptors). The solvent inclusion into the cavity of NaL+ was examined in chloroform. The calix[4]arenes bound the cations efficiently with peak affinity for sodium. All reactions were enthalpy controlled, whereas the standard complexation entropy was favourable solely for Li+ complexation in acetonitrile. The affinity of L reduced as follows: MeCN > MeOH > DMF. The thermodynamic complexation parameters with both receptors were highly similar in MeOH and DMF indicating rather weak involvent of glucose subunits into hosting process. The solvent effect on the complexation equilibria could be, partly, rationalized by considering the cation solvation and the affinity of NaL+ for solvent inclusion.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:217:136881
Study programmeTitle: Graduate university studies in chemistry; specializations in: Research programme
Course: Research programme
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra kemije (magistar/magistra kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Embargo expiration date: 2020-10-01
Terms of useLicence In copyright icon
Created on2018-11-16 13:50:21