Muonium Data Base

B43

Formate ion

Reaction: HCOO^-+ Mu ® MuH + CO₂^·-

Type of reaction: abstraction

a) Lossack, A.M., Roduner, E. and Bartels, D.M.
Phys. Chem. Chem.Phys., 2001, 3, 2031.

k_M = 5.6 x 10⁶dm³mol^-1s^-1 pH = 7

log(A/dm³mol^-1s^-1) = 11.92 ± 0.15 E_a = (29.5 ± 0.8) kJ mol^-1 for T ~ 276 K to 376 K

KIE_M/H = k_M/ k_H = 5.6 x 10⁶ / 1.9 x 10⁸= 0.03

KIE_M/D = k_M/ k_D = 5.6 x 10⁶ / 1.9 x 10⁸= 0.025

KIE_H/D = k_H/ k_D = 1.9 x 10⁸ / 2.2 x 10⁸= 0.9

k(H + HCOO^-) = (1.91 ± 0.08) x 10⁸ dm³mol^-1s^-1 pH = 7

log(A/dm³mol^-1s^-1) = 11.89 ± 0.08 E_a = (20.6 ± 0.4) kJ mol^-1 for T ~ 276 K to 376 K

k(D + HCOO^-) = (2.24 ± 0.11) x 10⁸ dm³mol^-1s^-1 pD = 7.0

log(A/dm³mol^-1s^-1) = 11.40 ± 0.05 E_a = (17.4 ± 0.9) kJ mol^-1

All data for k_M , k_Hand k_D from the paper byLossac A.M, Roduner, E. and Bartels, D.M.
Phys. Chem. Chem.Phys., 2001, 3, 2031.., quoted here as a)

b) Ng, B.W., Jean, Y.C., Ito, Y., Suzuki, T., Brewer, J.H., Fleming, D.G. and Walker, D.C.
J. Phys. Chem., 1981, 85, 454.

and

Ng, B.W. Ph.D. Thesis, University of British Columbia, 1983.

k_M = 4.8 x 10⁶dm³mol^-1s^-1 pH = natural (HCOONa)

A = 4.12 x 10¹² dm³mol^-1s^-1 E_a = (33 ± 2) kJ mol^-1

KIE = k_M/ k_H = 4.8 x 10⁶ / 1.9 x 10⁸= 0.024

k_H = from the paper by Lossack, A.M. et al., as for ref. a)

c) Percival, P.W., Roduner, E. and Fischer, H.

in Adv. Chem. Ser. 1979, 175, 335; ed. by H.J. Ache, ACS, Washington DC, 1979.

k_M = 7.8 x 10⁶dm³mol^-1s^-1 pH = 7

KIE = k_M/ k_H = 7.8 x 10⁶ / 1.24 x 10⁸= 0.06

Muonium reactions at high temperatures and pressures

Ghandi,K., Addison-Jones,B., Brodovitch, McKenzie,I., Kecman,S. and Percival,P.W.

Physica B ,2003, 326,55