Table 7.

Chemical shift in ppm, T₁, and full-width at half max (FWHM) of observed ¹H for representative lanthanide-based and transition metal-based paraSHIFT agents.

	¹H resonance	Equiv. protons	T₁ (ms)	δ_H (ppm)	FWHM (Hz)	FWHM (ppm)
Dy-L2¹⁷¹	−tBu	18	5.7^c	−17.8^a −29.9^a	78^b,^c,^f	0.20 ^b,^c,^f
Tm-DOTMA^171–172	−CH₃	24	4.1^a, 5.3^a	−107^a, −66.5^a	103^a,^c,^f, 84^a,^c,^f	0.26^a,^c,^f, 0.21^a,^c,^f
DyL2²⁵¹	−tBu	18	8.0^d	−60.1. −63.8	N/D

Fe-MPT¹⁵⁸	−CH₃	9	2.4^e	21.2	207^e	0.41^e
Fe-TMPC¹⁵⁸	−CH₃	6	1.1^e	−52.3	458^e	0.92^e
Fe-BMPC¹⁵⁷	−CH₃	6	0.62^e	−22.5	480^e	0.96^e
Fe-2MPC¹⁵⁷	−CH_{3 (pyridine)}	6	1.0^e	−45.5	393^e	0.79^e
	−CH_{3 (amine)}	6	1.1^e	105	359^e	0.72^e
Co-MPT ¹⁵⁸	−CH₃	9	5.7^e	8.03	66.5^e	0.13^e
Co-TMPC¹⁵⁸	−CH₃	6	0.37^e	−120	909^e	1.8^e
Co-BMPC¹⁵⁷	−CH₃	6	0.30^e	−80.4	1150^e	2.3^e
Co-2MPC¹⁵⁷	−CH_{3 (pyridine)}	6	0.44^e	−112.5	848^e	1.7^e
	−CH_{3 (amine)}	6	0.18^e	164.4	1982^e	4.0^e

two isomers

corresponds to major isomer with δ = 17.8ppm

9.4T

7.0T

11.7T

calculated from T₂, assuming T₂ ~ 1/(Δν_1/2*π).