. 2012 May 11;51(2):117–121. doi: 10.3164/jcbn.11-113

Table 2.

Hyperfine coupling constants of spin adducts.

Free Radical	HFCC/mT			Assignment
Free Radical	A_H	A_N	A_P	Assignment
Hydroxyl, ^•OH	1.37	1.37	4.88	CYPMPO-OH^a
	1.23	1.35	4.70	CYPMPO-OH^a
Superoxide, O₂^•−	1.11	1.26	5.25	CYPMPO-O₂^−b
	1.04	1.27	5.10	CYPMPO-O₂^−b
t-Butoxyl, t-BuO^• (Alkoxyl)	1.24	1.36	4.80	CYPMPO-OBu^c
t-Butoxyl, t-BuOO^• (Alkylperoxyl)	1.35	1.45	5.05	CYPMPO-OOBu^d
Methyl, CH₃^• (Alkyl)	2.05	1.51	4.90	CYPMPO-CH₃
Singlet Oxygen, ¹ΔO₂		1.50		TEMPOL radical^e

^a Diastereomers.⁽¹⁴⁾ ^b Diastereomers.⁽¹⁴⁾ ^c Actual structure of BuO^• is H₂N(HN)C-C(CH₃)₂-O^•.⁽⁷⁾ ^d Actual structure of BuOO^• is (CH₃)₃C-OO^•. ^e TEMPOL radical = 4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl radical.