Table 1. EPR Hyperfine Coupling Constants for Methyleugenol Radical Cation and Related Radicals.

compd	R1–	R2–	aR2a,b	aOCH3	a3	aR1	a5	a6
methyleugenol	CH2=CH–CH2-	CH3-	0.167c (3H)	0.169c (3H)	0.025	0.794 (2H)	0.416	∼0
3,4-dimethoxy-toluene	CH3-	CH3-	0.282c (3H)	0.335c (3H)	0.073	0.808 (3H)	0.498	∼LWd
eugenol	CH2=CH–CH2-	H-	---e [---]f	0.163 (3H) [0.162]	0.181 [0.19]	0.790 (2H) [0.797]	0.411 [0.415]	∼LW [---]
2-methoxy-4-methylphenol	CH3-	H-	---	0.169 (3H)	0.153	1.032 (3H)	0.408	0.026

^aCoupling constants are in mT (1 mT = 10 gauss).

^bNumbers in parentheses are numbers of equivalent hydrogen atoms contributing to the stated hyperfine coupling.

^cCoupling constants assigned arbitrarily and may be interchanged.

^dCoupling constants were not resolved and are less than the linewidths of EPR lines, ca. < 0.020 mT.

^eCoupling constants were not observed or not reported.

^fCoupling constants in square brackets are literature values reported by ref (26).