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The Use of Graph-theoretical Models to Evaluate Two Electroanalytical Methods for Determination of Stability Constants

Nenad Raos ; Institute for Medical Research and Occupational Health, Zagreb, Croatia
Gina Branica ; Institute for Medical Research and Occupational Health, Zagreb, Croatia
Ante Miličević ; Institute for Medical Research and Occupational Health, Zagreb, Croatia

Puni tekst: engleski, pdf (97 KB) str. 511-517 preuzimanja: 409* citiraj
APA 6th Edition
Raos, N., Branica, G. i Miličević, A. (2008). The Use of Graph-theoretical Models to Evaluate Two Electroanalytical Methods for Determination of Stability Constants. Croatica Chemica Acta, 81 (3), 511-517. Preuzeto s https://hrcak.srce.hr/31139
MLA 8th Edition
Raos, Nenad, et al. "The Use of Graph-theoretical Models to Evaluate Two Electroanalytical Methods for Determination of Stability Constants." Croatica Chemica Acta, vol. 81, br. 3, 2008, str. 511-517. https://hrcak.srce.hr/31139. Citirano 01.03.2021.
Chicago 17th Edition
Raos, Nenad, Gina Branica i Ante Miličević. "The Use of Graph-theoretical Models to Evaluate Two Electroanalytical Methods for Determination of Stability Constants." Croatica Chemica Acta 81, br. 3 (2008): 511-517. https://hrcak.srce.hr/31139
Harvard
Raos, N., Branica, G., i Miličević, A. (2008). 'The Use of Graph-theoretical Models to Evaluate Two Electroanalytical Methods for Determination of Stability Constants', Croatica Chemica Acta, 81(3), str. 511-517. Preuzeto s: https://hrcak.srce.hr/31139 (Datum pristupa: 01.03.2021.)
Vancouver
Raos N, Branica G, Miličević A. The Use of Graph-theoretical Models to Evaluate Two Electroanalytical Methods for Determination of Stability Constants. Croatica Chemica Acta [Internet]. 2008 [pristupljeno 01.03.2021.];81(3):511-517. Dostupno na: https://hrcak.srce.hr/31139
IEEE
N. Raos, G. Branica i A. Miličević, "The Use of Graph-theoretical Models to Evaluate Two Electroanalytical Methods for Determination of Stability Constants", Croatica Chemica Acta, vol.81, br. 3, str. 511-517, 2008. [Online]. Dostupno na: https://hrcak.srce.hr/31139. [Citirano: 01.03.2021.]

Sažetak
Stability constants K1 and b2 of copper(II) complexes with alanine and its five N-alkylated and
N,N-dialkylated derivatives were measured by glass electrode potentiometry (GEP) and square
wave voltammetry (SWV) and evaluated using graph-theoretical models. Correlations with the
connectivity index of the 3rd order, 3cv, show that log K1(GEP) values were better reproduced
than log K1(SWV) values; S.E. = 0.18–0.16 vs. 0.29–0.35, respectively. The opposite is true for
log b2 (S.E. = 0.51–0.56 vs. 0.39–0.47 for GEP and SWV, respectively). By applying three criteria
– 1) difference between GEP and SWV values, 2) difference between SWV and theoretical
values, and 3) correlation of experimental error (S.E.exp) to the difference between experimental
and theoretical values – it was possible to determine three experimental log K1(SWV)
values as problematic. This report demonstrates the value of recently developed graph-theoretical
models in planning the experiments and discussing their results.

Ključne riječi
glass electrode potentiometry (GEP); square wave voltammetry (SWV); copper(II) chelates; amino acid; stability constant; topological indices

Hrčak ID: 31139

URI
https://hrcak.srce.hr/31139

Posjeta: 688 *