Hydrated electron Hydrated electron

Schmidt, K.H.; Bartels, D.M.
Chem. Phys. 190, 145-152 (1995)

Reaction: e_aq^- + e_aq^- ® OH^- + H₂
Solvent: H₂O

k = 6.0 × 10⁹(L mol^-1 s^-1), pH = 10, T = 296K

Experimental method: Pulse radiolysis
Analytical method: vis-UV absorption
Data type: Absolute value measured directly

Decay kinetics at 720 nm in soln. contg. 0.01 mol L^-1 EtOH, 10^-4 mol L^-1 NaOH and LiClO₄; e = 19,000 L mol^-1 cm^-1; k independent of ionic strength up to 0.06 mol L^-1 LiClO₄.

Buxton, G.V.; Greenstock, C.L.; Helman, W.P.; Ross, A.B.
J. Phys. Chem. Ref. Data 17, 513-886 (1988)

Reaction: e_aq^- + e_aq^- ® H₂ + OH^-
Solvent: H₂O

k = 5.5 × 10⁹(L mol^-1 s^-1)

Data type: Selected or recommended value

Selected value

Christensen, H.; Sehested, K.
J. Phys. Chem. 90, 186-190 (1986)

Reaction: e_aq^- + e_aq^- ® H₂ + OH^-
Solvent: H₂O

Activation energy = 23(kJ mol^-1), Log(A) = 13.801, Temperature range 278 to 423 K, pH range 11 to 13
k = 5.0 × 10⁹(L mol^-1 s^-1), T = 293K

Experimental method: Pulse radiolysis
Analytical method: vis-UV absorption
Data type: Absolute value measured directly

Decay kinetics; tert-BuOH or H₂ as ·OH scavenger.

Telser, Th.; Schindewolf, U.
J. Phys. Chem. 90, 5378-5382 (1986)

Reaction: e_aq^- + e_aq^- ® H₂ + OH^-
Solvent: H₂O

k = 5 × 10⁹(L mol^-1 s^-1), pH = 12.8

Experimental method: Flash photolysis/photoionization
Analytical method: vis-UV absorption
Data type: Absolute value measured directly

Phot. of OH^-; d.k. at 700 nm; [H₂] = 7 × 10^-4 mol L^-1, [NaOH] = 7 × 10^-2 mol L^-1

Hickel, B.; Sehested, K.
J. Phys. Chem. 89, 5271-5274 (1985)

Reaction: e_aq^- + e_aq^- ® H₂ + OH^-
Solvent: H₂O

Activation energy = 22(kJ mol^-1), Log(A) = 13.768, Temperature range 288 to 333 K
k = 7 × 10⁹(L mol^-1 s^-1), pH = 12, T = 293K

Experimental method: Pulse radiolysis
Analytical method: vis-UV absorption
Data type: Absolute value measured directly

Decay kinetics at 600 nm; value of from graph; e(600 nm) = 11,500 L mol^-1 cm^-1; ([H₂] = 8 × 10^-2 mol L^-1.

Christensen, H.; Sehested, K.
Radiat. Phys. Chem. 16, 183-186 (1980)

Reaction: e_aq^- + e_aq^- ® H₂ + OH^-
Solvent: H₂O

Activation energy = 22(kJ mol^-1), Log(A) = 13.664, Temperature range 283 to 373 K
k = 5.5 × 10⁹(L mol^-1 s^-1), pH = 11, T = 293K

Experimental method: Pulse radiolysis
Analytical method: vis-UV absorption
Data type: Absolute value measured directly

Decay kinetics in Ar-satd. soln. contg. 10^-2 mol L^-1 tert-BuOH.

Hickel, B.
Proc. Fourth Tihany Symposium on Radiation Chemistry (Keszthely, Hungary, 1-6 June 1976), P. Hedvig and R. Schiller (eds.), Akad. Kiado, Budapest, 1977, p.801-8

Reaction: e_aq^- + e_aq^- ® H₂ + OH^-
Solvent: H₂O

Activation energy = 18(kJ mol^-1), Log(A) = 12.876, Temperature range 278 to 338 K, pH range 11.6 to 13.0
k = 5.0 × 10⁹(L mol^-1 s^-1), T = 296K

Experimental method: Pulse radiolysis
Analytical method: vis-UV absorption
Data type: Absolute value measured directly

Decay kinetics at 600 nm in soln. under 30 atm. H₂ ([H₂] = 2.7 × 10^-2 and 2.1 × 10^-2 mol L^-1 at 5 and 65°C, resp.) taking e = 12,400 L mol^-1 cm^-1.

Meisel, D.; Czapski, G.; Matheson, M.S.; Mulac, W.A.
Int. J. Radiat. Phys. Chem. 7, 233-241 (1975)

Reaction: e_aq^- + e_aq^- ® H₂ + OH^-
Solvent: H₂O

k = 6.2 × 10⁹(L mol^-1 s^-1), pH = 10.5

Experimental method: Pulse radiolysis
Analytical method: vis-UV absorption
Data type: Absolute value measured directly

Decay kinetics at 575 nm in solution under 100 atm. H₂ taking e = 10,500 L mol^-1 cm^-1. The dielectron was not observed.

Brusentseva, S.A.
High Energy Chem. 4, 339-340 (1970)

Reaction: e_aq^- + e_aq^- ® H₂ + OH^-
Solvent: H₂O

k = 5.0 × 10⁹(L mol^-1 s^-1), ionic strength ®0, pH = 12.7

Experimental method: Pulse radiolysis
Analytical method: vis-UV absorption
Data type: Absolute value measured directly

Apparent change in k with pH has been obs.; H₂-satd. soln.

Boyle, J.W.; Ghormley, J.A.; Hochanadel, C.J.; Riley, J.F.
J. Phys. Chem. 73, 2886-2890 (1969)

Reaction: e_aq^- + e_aq^- ® H₂ + OH^-
Solvent: H₂O

k = 5.8 × 10⁹(L mol^-1 s^-1), alkaline

Experimental method: Flash photolysis/photoionization
Analytical method: vis-UV absorption
Data type: Absolute value measured directly

Decay kinetics; H₂-satd.; e = 10,900 L mol^-1cm^-1 at 578 nm.

Schmidt, K.; Hart, E.J.
Adv. Chem. Ser. 81, 267-279 (1968)

Reaction: e_aq^- + e_aq^- ® H₂ + OH^-
Solvent: H₂O

k = 6 × 10⁹(L mol^-1 s^-1), pH = 11

Experimental method: Flash photolysis/photoionization
Analytical method: vis-UV absorption
Data type: Absolute value measured directly

Decay kinetics at 700 nm; soln. H₂-satd.; e = 1.85 × 10⁴ L mol^-1 cm^-1.

Gottschal, W.C.; Hart, E.J.
J. Phys. Chem. 71, 2102-2106 (1967)

Reaction: e_aq^- + e_aq^- ® H₂ + OH^-
Solvent: H₂O

Activation energy = 22(kJ mol^-1), Log(A) = 13.696, Temperature range 283 to 366 K
k = 6.3 × 10⁹(L mol^-1 s^-1), pH = 12, T = 295K

Experimental method: Gamma-radiolysis
Analytical method: vis-UV absorption
Data type: Derived from fitting to complex mechanism

Steady-state method, soln. H₂-satd.

Matheson, M.S.; Rabani, J.
J. Phys. Chem. 69, 1324-1335 (1965)

Reaction: e_aq^- + e_aq^- ® H₂ + OH^-
Solvent: H₂O

k = 5.5 × 10⁹(L mol^-1 s^-1), pH = 13.3

Experimental method: Pulse radiolysis
Analytical method: vis-UV absorption
Data type: Absolute value measured directly

Decay kinetics at 578 nm; soln. in equil. with 100 atm. H₂; e = 10,600 L mol^-1 cm^-1.

Gordon, S.; Hart, E.J.; Matheson, M.S.; Rabani, J.; Thomas, J.K.
Discuss. Faraday Soc. 36, 193-205 (1963)

Reaction: e_aq^- + e_aq^- ® H₂ + OH^-
Solvent: H₂O

k = 5.0 × 10⁹(L mol^-1 s^-1), pH = 10.9

Experimental method: Pulse radiolysis
Analytical method: vis-UV absorption
Data type: Absolute value measured directly

Decay kinetics at 578 nm assuming e = 10.4 × 10³ L mol^-1cm^-1; contg. EtOH, MeOH or ferrocyanide.