Table 2.

EPR data of solutions of thiazoles 1–4 with MB.^[a]

Thiazole	MB [equiv]	g value	A N [mT]	τ 1/2 [h][b]
1	1	2.0030	0.72	91
2	1	2.0031	0.63	74
3	1	2.0034	0.78	385
4	1	2.0033	0.64 (one N atom) 0.34 (two N atom) 0.29 (eight H atom)	3
	3	2.0044	0.43

[a] In CH₂Cl₂ (distilled from P₂O₅), [solute]=1×10⁻⁴  m. The g and A _N values were determined from spectral simulations. [b] Calculated by integrating the area of the EPR signals, normalized to the peak height of the signals from the Mn²⁺ marker as g standard.