TABLE 5.

Coordination equilibrium constants and thermodynamic constants of copper complexes.

	molar ratio (compound/Cu)	K × 107	${\Delta }_r{H}_m^{\theta }\left(kJ/mol\right)$	${\Delta }_r{S}_m^{\theta }\left(J\cdot mo{l}^{-1}\cdot K^{-1}\right)$	${\Delta }_r{G}_m^{\theta }\left(KJ/mol\right)$
Quercetin	2:1	1.616	−11.683	−16.072	−6.894
Kaempferide	1:1	1.459	−17.132	−35.21	−6.641
Curcumin	2:1	7.094	−11.324	−2.567	−10.559
Rhein	1:2	9.063	−14.453	−11.03	−11.166
Chrysophanol	1:2	7.263	−13.125	−8.41	−10.617
Emodin	1:2	1.451	−10.882	−14.28	−6.626