Organic Solutes in Aqueous Solutions

B84

B84

Uracil

 Reaction: Uracil + Mu ® Mu adduct

Type of reaction: addition to C=C bond with Mu at C(5) or C(6)
 

a)      Barnabas, M.V., Venkatsewaran,K and Walker, D.C.
         Can. J. Chem., 1989, 67, 120
.

b)      Barnabas, M.V. and Walker, D.C.
         Can. J. Chem., 1991, 69, 1252.
 

kM = 6 x 109 dm3mol-1s-1                            at pH = 7.0  ref a)


kM = 4.3 x 109 dm3mol-1s-1                         at pH = 1.0  ref b)

KIE = kM / kH = 6 x 109 / 3.8 x 108 = 16      at pH = 7.0


KIE = kM / kH = 4.3 x 109 / 3.8 x 108 = 11   at pH = 1.0

kH = 3.8 x 108 dm3mol-1s-1

from: www.rcdc.nd.edu/compilations/HAtom/H.htm

 

Muonium reactions in the micellar systems

kM = 6 x 109 dm3mol-1s-1 in the CTAB micelles

from: Barnabas, M.V. and Walker, D.C., Can. J. Chem. 1999, 69, 1252.

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