Kinetic and Mechanistic Studies on the Interaction of Glycyl-L-alanine, Glycyl-L-asparagine, and Glycyl-L-tyrosine with Hydroxopentaaquarhodium(III) Ion

Table 4

Comparison of activation parameters for the interaction of different ligands with the complex in aqueous medium at pH = 4.3.

Ligands	Δ𝐻^≠1(kJ mol^−1)	Δ𝑆^≠1 (J K^−1 mol^−1)	Δ𝐻^≠2(kJ mol^−1)	Δ𝑆^≠2 (J K^−1 mol^−1)	Reference
L-Arginine	56.9±3.8	−105±12	89.1±2.9	−54±9	[22]
L^1-L′H	26.1±0.3	−209±1	91.3±2.9	−45±9	This work
L^2-L′H	37.2±0.7	−183±2	94.7±3.1	−36±9	This work
L^3-L′H	29.4±2.8	−201±8	93.1±1.6	−40±5	This work
Glycyl-glycine	26.7±0.3	−207±1	92.4±1.3	−42±4	[23]
Glycyl-L-glutamine	34.7±1.3	−189±4	94.1±1.1	−37±3	[24]
Glycyl-L-valine	22.0±1.2	−220±4	90.7±3.2	−47±10	[24]