Organic Solutes in Aqueous Solutions

B73

B75

Pyrimidine (1,3 diazine)

Wu, Z., Stadlbauer, J.M. and Walker, D.C.

J. Am. Chem. Soc., 1992, 114, 3988.

Reaction: C4H4N2 + Mu ® MuC4H4N2

Type of reaction: addition to ring

kM = (3.7 ± 0.2) x 109 dm3mol-1s-1   

KIE = kM / kH = 3.7 x 109 / 9.2 x 107 » 40

kH = 9.2 x 107 dm3mol-1s-1 at pH ~ 1  (65 % of solute protonated at N atom)

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

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