Complex formation of mercury(II) chloride with dipeptides

• Published in: Russian journal of general chemistry Vol. 87; no. 3; pp. 605 - 612
• Main Authors: Pyreu, D. F., Kozlovskii, E. V., Gruzdev, M. S., Kumeev, R. S.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-03-2017; Springer Nature B.V
• Subjects: Aqueous solutions; Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Complex formation; Electrical measurement; Ligands; Mercury compounds; NMR spectroscopy; Potentiometric analysis; Selected articles originally published in Russian in Rossiiskii Khimicheskii Zhurnal (Russian Chemistry Journal)
• ISSN: 1070-3632; 1608-3350
• DOI: 10.1134/S1070363217030379

Mixed-ligand complex formation in the HgCl–L systems (L= GlyGly, AlaAla) has been studied by pH potentiometry, calorimetry, and
1
Н and
13
С NMR spectroscopy in aqueous solutions at 298.15 K and ionic strengths
I
of 0.5 (KNO
3
). The thermodynamic parameters of formation of Hg
n
Cl
p
L
q
H
–
r
(
n
= 1;
p
= 0, 1, 2;
q
= 1, 2;
r
= 0, 1, 2) complexes have been determined. The most probable coordination modes of the dipeptide molecules in the mixed-ligand complexes were discussed.