Tossup

These compounds exhibit the captodative (“CAP-toe-DAY-tiv”) effect when they have both electron-withdrawing and electron-donating groups. TEMPO is a (10[1])“persistent” (10[1])one (10[1])of these (10[1])compounds (10[1])used (10[1])as a probe (10[1])in EPR spectroscopy, which can identify these compounds from their paramagnetism. These compounds (10[3])are formed when UV light overcomes the (10[2])bond-dissociation (10[3])energy (10[6])in (10[1])homolytic (10[3])cleavage. (10[11]-5[1])“Fish-hooks” (10[5]-5[1])are used in (10[1])arrow-pushing (10[5]-5[1])mechanisms (10[5]-5[1])involving these compounds. (10[1])Reactive oxygen (10[1])species (10[1])and these compounds can be “scavenged” (-5[1])by vitamin C (10[1])and other (10[2])antioxidants. (10[2]-5[1])For 10 points, name these highly reactive (10[3])compounds (10[2]-5[1])with an unpaired (10[2])valence (10[5])electron. (10[2])■END■ (10[20]0[23])

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