Table 3.

Activation parameters of intramolecular dynamics processes in metal complexes with EDTA

Metal ion	Cationic radius, Å	Activation energy, ΔE≠a (kJ/mol)	Activation enthalpy, ΔH≠ (kJ/mol)	Free activation energy of processes of intramolecular dynamics, ΔG≠298, (kJ/mol)	References
Sc3+	0.89	69.5	67	–	[92]
Er3+	1.03	–	–	50	[102]
Y3+	1.04	42.0	39.6	–	[92]
La3+	1.17	34.9	32.5	–	[92]