Thermodynamic parameters of phenylglycine interaction with UO22+, La3+ and Zr4+

BMC Chemistry

Table 7 Standard thermodynamic parameters of M^Z+-phenylglycine complexes

Metal ion	T (°C)	Reaction with L⁻ (Scheme I)			Reaction with HL (Scheme II)
Metal ion	T (°C)	− ΔG° (kJ/mole)	ΔH° (kJ/mole)	ΔS° (J/deg. mole)	ΔG° (kJ/mole)	ΔH° (kJ/mole)	ΔS° (J/deg. mole)
UO₂²⁺	25	40.51		344.26	11.70		110.54
	35	45.12	62.08	348.05	10.03	44.64	112.37
	45	47.37		344.18	9.50		110.50
La³⁺	25	22.31		504.53	31.61		360.37
	35	27.72	128.04	505.71	27.42	139.00	362.27
	45	32.39		504.50	24.42		360.32
Zr⁴⁺	25	58.48		77.58	− 6.16		− 145.44
	35	59.33	− 35.36	77.83	− 5.90	− 49.50	− 141.56
	45	60.04		77.61	− 3.23		− 145.50

Uncertainties are [ΔG°, 0.01 kJ mol⁻¹; ΔH°, 0.01 kJ mol⁻¹ and ΔS°, 0.02 J/deg. mole]

ISSN: 2661-801X