. 2020 Mar 11;11(14):3619–3628. doi: 10.1039/d0sc00343c

Apparent binding constants (log K_a) of Eu(iii) complexes [Eu.1]⁺, [Eu.2]⁺ and [Eu.4]⁺ with ATP, ADP and AMP in the absence and presence of MgCl₂^a.

Complex	ATP		ADP		AMP
Complex	0 mM MgCl₂	5 mM MgCl₂	0 mM MgCl₂	5 mM MgCl₂	0 mM MgCl₂	5 mM MgCl₂
[Eu.1]⁺	4.4	2.82 ± 0.05	4.6	3.37 ± 0.02	3.4	3.40 ± 0.02
[Eu.2]⁺	5.8	n.d.	5.7	4.6	4.8	3.8
[Eu.4]⁺	3.65 ± 0.04	3.26 ± 0.20	3.34 ± 0.01	2.93 ± 0.05	2.77 ± 0.03	2.85 ± 0.03

Conditions: 10 mM HEPES, pH 7.0, λ_exc = 330 nm, n.d. = not determined.

Apparent binding constants (log Ka) of Eu(iii) complexes [Eu.1]+, [Eu.2]+ and [Eu.4]+ with ATP, ADP and AMP in the absence and presence of MgCl2a.