. Author manuscript; available in PMC: 2009 Dec 22.

Published in final edited form as: J Biol Inorg Chem. 2008 Dec 13;14(3):421–438. doi: 10.1007/s00775-008-0459-3

Table 2.

Thermodynamic stability constants (log K_ML) of DOTA-tetraamide complexes of several trivalent lanthanide ions (Ln³⁺) (I = 1.0 M KCl, 25°C).

Ln³⁺	DOTAM^a	DTMA^a	L^1a	L^2b	L⁴	L⁸	DOTA^b
Ce³⁺	11.93	12.68	13.0	13.02	12.01 ± 0.07	11.90 ± 0.12	23.4
Nd³⁺	12.40	13.08	14.37	14.45	12.95 ± 0.08	12.66 ± 0.22	23.0
Eu³⁺	13.80	13.67	15.09	14.84	13.41 ± 0 .09	13.18 ± 0.11	23.5
Dy³⁺	13.57	13.84	15.09	14.37	12.91 ± 0.24	12.98 ± 0.07	24.8
Yb³⁺	-	-	-	14.25	13.07 ± 0.12	12.77 ± 0.08	25.0
Lu³⁺	13.53	13.91	14.62	-	12.21 ± 0.04	12.20 ± 0.08	25.4

^a)

from reference [5],

^b)

from reference [18].