Pregled bibliografske jedinice broj: 892182
Complexation of Alkali Metal Cations by a Tertiary Amide Calix[4]Arene Derivative in Strongly Cation Solvating Solvents
Complexation of Alkali Metal Cations by a Tertiary Amide Calix[4]Arene Derivative in Strongly Cation Solvating Solvents // Croatica chemica acta, 90 (2017), 2; 307-314 doi:10.5562/cca3200 (podatak o recenziji nije dostupan, članak, znanstveni)
CROSBI ID: 892182 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Complexation of Alkali Metal Cations by a
Tertiary Amide Calix[4]Arene Derivative in
Strongly Cation Solvating Solvents
Autori
Leko, Katarina ; Bregović, Nikola ; Cvetnić, Marija ; Cindro, Nikola ; Tranfić Bakić, Marina ; Požar, Josip ; Tomišić, Vladislav.
Izvornik
Croatica chemica acta (0011-1643) 90
(2017), 2;
307-314
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
tertiary amide calix[4]arene derivative, microcalorimetry, solvation effect, alkali metal cation complexation.
Sažetak
The complexation of alkali-metal cations with calix[4]arene tertiary amide derivative (L) was studied in N- methylformamide (NMF), N, N- dimethylformamide (DMF), and dimethyl sulfoxide (DMSO) by means of microcalorimetric and UV spectrophotometric titrations. The Gibbs energies, enthalpies, and entropies for transfer of reactants and products from N- methylformamide to other solvents were determined. Favorable enthalpic contribution to overall stability was found to be the most important for all complexation reactions, especially in the case of NaL+ formation, resulting in an affinity peak of L for this cation. The complexation entropy changes were always unfavorable. The ligand dissolution was endothermic in all solvents, accompanied by positive solution entropy. The highest complex stability constants were determined in NMF, whereas in DMSO the affinity of L towards alkali metal cations was the lowest. An interesting interplay between the transfer enthalpies and entropies of the reactants and complexes was revealed and discussed in detail.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
POVEZANOST RADA
Projekti:
HRZZ-IP-2014-09-7309 - Razvoj supramolekulskih receptora kationa i aniona (SupraCAR) (Tomišić, Vladislav, HRZZ - 2014-09) ( CroRIS)
Ustanove:
Prehrambeno-biotehnološki fakultet, Zagreb,
Prirodoslovno-matematički fakultet, Zagreb
Profili:
Katarina Leko
(autor)
Vladislav Tomišić
(autor)
Nikola Bregović
(autor)
Josip Požar
(autor)
Nikola Cindro
(autor)
Marija Cvetnić
(autor)
Marina Tranfić Bakić
(autor)
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus