Supporting Information s4
Supporting Information
Mixed ligand complexes of copper(II) iminodiacetate with di- and tripeptides in solution
DMITRII PYREU*, SERGEI GRIDCHIN and EUGENII KOZLOVSKII
Table S1. Heats of mixing of alkaline solution of glycylglycine (HGG 1.492 mol kg-1 of solution + NaOH 1.440 mol kg-1 of solution) with solutions of CuIda at 298.15 K and I = 0.5 (KNO3).
Weighed sample of GG solution, g / Concentration after mixing ·103, mol dm-3 / DmixH,kJ mol-1 GG / DmixH - DdilH,
kJ mol-1 GG
GG– / H+
СCuIda = 0.01002 mol dm-3
0.35460 / 0.01056 / 0.0003693 / –23.699 / –22.807
0.35060 / 0.01045 / 0.0003651 / –23.669 / –22.777
СCuIda = 0.01010 mol dm-3
0.37425 / 0,01115 / 0.0003897 / –23.588 / –22.696
0.24600 / 0.007329 / 0.0002562 / –23.953 / –23.061
Table S2. Heats of mixing of alkaline solution of glycylglycine (HGG 0.8192 mol kg-1 of solution + NaOH 1.600 mol kg-1 of solution) with solutions of CuIda at 298.15 K and I = 0.5 (KNO3).
Weighed sample of GG solution, g / Concentration after mixing ·103, mol dm-3 / DmixH,kJ mol-1 GG / DmixH - DdilH,
kJ mol-1 GG
GG– / H+
СCuIda = 0.01002 mol dm-3
0.56595 / 0.009258 / -0.008823 / –49.653 / –47.606
0.60820 / 0.009949 / -0.009481 / –47.718 / –45.671
0.64085 / 0.01048 / -0.009990 / –45.582 / –43.535
Table S3. Heats of mixing of alkaline solution of DL-α-alanyl-DL-α-alanine (HAA 1.381 mol kg-1 of solution + NaOH 1.397 mol kg-1 of solution) with solutions of CuIda at 298.15 K and I = 0.5(KNO3).
kJ mol-1 AA / DmixH - DdilH,
kJ mol-1 AA
AA– / H+
СCuIda = 0.008009 mol dm-3
0.28690 / 0.007912 / -0.0000928 / –26.709 / –23.363
0.31450 / 0.008673 / -0.0001017 / –25.947 / –22.601
Table S4. Heats of mixing of alkaline solution of DL-α-alanyl-DL-α-alanine (HAA 0.7884 mol kg-1 of solution + NaOH 1.567 mol kg-1 of solution) with solutions of CuIda at 298.15 K and I = 0.5(KNO3).
Weighed sample of AA solution, g / Concentration after mixing ·103, mol dm-3 / DmixH,kJ mol-1 AA / DmixH - DdilH,
kJ mol-1 AA
AA– / H+
СCuIda = 0.008009 mol dm-3
0.53950 / 0.008493 / -0.008392 / –45.978 / –41.611
0.50595 / 0.007965 / -0.007870 / –47.529 / –43.162
0.53530 / 0.008427 / -0.008327 / –45.756 / –41.389
Table S5. Heats of mixing of alkaline solution of glycylglycylglycine (HGGG 1.194 mol kg-1 of solution + NaOH 1.389 mol kg-1 of solution) with solutions of CuIda at 298.15 K and I = 0.5(KNO3).
Weighed sample of GGG solution, g / Concentration after mixing ·103, mol dm-3 / DmixH,kJ mol-1 GGG / DmixH - DdilH,
kJ mol-1 GGG
GGG– / H+
СCuIda = 0.004021 mol dm-3
0.13995 / 0.003337 / -0.0005424 / –27.288 / –27.288
0.18715 / 0.004462 / -0.0007254 / –26.069 / –26.069
Table S6. Heats of mixing of alkaline solution of glycylglycylglycine (HGGG 0.8017 mol kg-1 of solution + NaOH 1.522 mol kg-1 of solution) with solutions of CuIda at 298.15 K and I = 0.5(KNO3).
kJ mol-1 GGG / DmixH - DdilH,
kJ mol-1 GGG
GGG– / H+
СCuIda = 0.004021 mol dm-3
0.24020 / 0.003845 / -0.003455 / –45.903 / –45.903
0.24685 / 0.003952 / -0.003550 / –45.243 / –45.243
Table S7. Heats of mixing of alkaline solution of glycylglycylglycine (HGGG 0.5490 mol kg-1 of solution + NaOH 1.608 mol kg-1 of solution) with solutions of CuIda at 298.15 K and I = 0.5(KNO3).
Weighed sample of GGG solution, g / Concentration after mixing ·103, mol dm-3 / DmixH,kJ mol-1 GGG / DmixH - DdilH,
kJ mol-1 GGG
GGG– / H+
СCuIda = 0.004021 mol dm-3
0.42920 / 0.004705 / -0.009073 / –46.389 / –46.389
0.28865 / 0.003164 / -0.006102 / –61.387 / –61.387
Table S8. Heats of mixing of alkaline solution of glycylglycylglycine (HGGG 0.5329 mol kg-1 of solution + NaOH 1.613 mol kg-1 of solution) with solutions of CuIda at 298.15 K and I = 0.5(KNO3).
Weighed sample of GGG solution, g / Concentration after mixing ·103, mol dm-3 / DmixH,kJ mol-1 GGG / DmixH - DdilH,
kJ mol-1 GGG
GGG– / H+
СCuIda = 0.004111 mol dm-3
0.38220 / 0.004067 / -0.008245 / –54.130 / –54.130
0.37375 / 0.003977 / -0.008062 / –54.363 / –54.363
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