Table 2.

Comparison of the Chemical Shifts (δ (ppm)) of the Ln³⁺-Bound Water and Amide Proton Resonances for the Series of LnDOTA–(gly)₄ ^12,17 and LnDOTMA–(gly)₄ Complexes (Obtained from CEST Spectra)

Ln3+	DOTA-(gly)4		DOTMA-(gly)4
	H2O	–NH	H2O	–NH
Pr	−60	13	−85	15
Nd	−32	11	−50	10
Sm	−4		−13	6
Eu	50	−4	66	−4
Tb	−600	62	−752
Dy	−720	77
Ho	−360	39
Er	200	−22
Tm	500	−51		−64
Yb	200	−16		−20