Solutes Unreactive Towards Muonium Atoms in Aqueous Solutions
kM values represent upper limit


C20

C20

Guanidine

Barnabas, M.V., Venkateswaran, K. and Walker, D.C.

Can. J. Chem., 1989, 67, 120.

Reaction: H2NC(=NH)NH2 + Mu ® no reaction detected

Type of reaction: abstraction (proposed)

kM » 3 x 105dm3mol-1s-1   

KIE = kM / kH » 3 x 105 / 1.2 x 106 » 0.25

kH = 1.2 x 106dm3mol-1s-1  at  pH = 1.0 guanidine as conjugated acid from:

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


Muonium reactions in the micellar systems

kM
» 9 x
108dm3mol-1s-1 in the CTAB micelles

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

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