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Table B.1

Ground state-to-species rate coefficients for the system calculated from the state-to-state data by Hugo et al. (2009).

Chemical reaction α β γ

pH2 −→ oH2 6.29(–10) −0.27 174.90
pH2 −→ oH2 5.27(–10) −0.11 203.05
oH2 −→ pH2 2.06(–10) −0.15 0.73
oH2 −→ pH2 1.87(–10) −0.24 1.36
oH2 −→ oH2 5.85(–10) −0.16 35.24
HD −→ HD 6.31(–11) 0.06 30.92
HD −→ pH2D+ pH2 1.49(–10) −0.29 1.65
HD −→ pH2D+ oH2 2.72(–10) −0.24 2.92
HD −→ oH2D+ pH2 3.97(–10) −0.17 0.36
HD −→ oH2D+ oH2 6.29(–10) 0.01 26.53
pD2 −→ pH2D+ HD 3.89(–10) 0.05 −0.94
pD2 −→ oH2D+ HD 4.75(–10) −0.03 0.18
pD2 −→ pD2H+ pH2 2.71(–10) −0.05 0.35
pD2 −→ pD2H+ oH2 4.22(–10) 0.02 0.51
oD2 −→ pH2D+ HD 5.04(–10) 0.21 −1.36
oD2 −→ oH2D+ HD 5.10(–10) 0.32 −3.11
oD2 −→ oD2H+ pH2 2.88(–10) −0.22 1.65
oD2 −→ oD2H+ oH2 4.27(–10) −0.10 1.05
pH2 −→ oH2 1.19(–09) 0.04 129.07
pH2 −→ oH2 5.24(–10) −0.40 182.18
oH2 −→ pH2 1.28(–10) 0.08 −0.65
oH2 −→ oH2 4.12(–10) 0.02 −0.45
oH2 −→ pH2 9.69(–11) 0.00 −0.17
HD −→ HD 4.80(–11) 0.23 −2.73
HD −→ pH2D+ oH2 1.61(–10) −0.02 −0.38
HD −→ oH2D+ pH2 1.85(–10) −0.07 0.17
HD −→ oH2D+ oH2 1.14(–09) 0.01 0.32
pD2 −→ oH2D+ HD 9.10(–10) 0.05 −0.44
pD2 −→ pD2H+ oH2 6.51(–10) −0.06 0.49
oD2 −→ oH2D+ HD 1.18(–09) 0.32 −0.54
oD2 −→ oD2H+ oH2 6.29(–10) −0.21 1.05
pH2D+ pH2 −→ HD 4.10(–10) 0.54 203.23
pH2D+ pH2 −→ oH2D+ oH2 7.88(–10) −0.27 268.03
pH2D+ oH2 −→ HD 1.44(–10) 0.08 54.29
pH2D+ oH2 −→ HD 1.14(–10) 0.16 89.94
pH2D+ oH2 −→ oH2D+ pH2 9.31(–10) −0.14 1.44
pH2D+ oH2 −→ oH2D+ oH2 6.54(–10) 0.00 90.28
pH2D+ HD −→ pD2 1.15(–11) 0.41 220.03
pH2D+ HD −→ oD2 6.41(–12) −0.39 161.32
pH2D+ HD −→ oH2D+ HD 4.30(–10) 0.25 82.91
pH2D+ HD −→ pD2H+ pH2 2.20(–10) −0.27 2.04
pH2D+ HD −→ pD2H+ oH2 1.35(–10) −0.17 35.71
pH2D+ HD −→ oD2H+ pH2 5.23(–10) −0.15 1.77
pH2D+ HD −→ oD2H+ oH2 2.72(–10) 0.15 −2.05
pH2D+ pD2 −→ pH2D+ oD2 3.79(–11) −0.10 −0.12
pH2D+ pD2 −→ pD2H+ HD 7.15(–10) 0.02 −0.41
pH2D+ pD2 −→ oD2H+ HD 5.42(–10) 0.00 0.82
pH2D+ pD2 −→ pH2 9.78(–12) −0.23 1.57
pH2D+ pD2 −→ pH2 8.83(–11) −0.20 0.82
pH2D+ oD2 −→ pH2D+ pD2 4.34(–11) 0.38 80.57
pH2D+ oD2 −→ pD2H+ HD 2.40(–10) −0.02 −0.37
pH2D+ oD2 −→ oD2H+ HD 1.05(–09) 0.14 −0.76
pH2D+ oD2 −→ pH2 9.32(–11) −0.38 2.71
pH2D+ oD2 −→ pH2 9.32(–11) −0.23 2.43
oH2D+ pH2 −→ HD 1.61(–10) 0.16 135.79
oH2D+ pH2 −→ HD 6.89(–11) −0.33 192.62
oH2D+ pH2 −→ pH2D+ oH2 5.13(–10) −0.04 83.43
oH2D+ pH2 −→ oH2D+ oH2 6.08(–10) −0.07 177.13
oH2D+ oH2 −→ HD 5.39(–11) 0.07 −1.66
oH2D+ oH2 −→ HD 1.35(–10) −0.08 7.03
oH2D+ oH2 −→ pH2D+ pH2 7.48(–11) −0.04 −0.55
oH2D+ oH2 −→ pH2D+ oH2 1.40(–10) −0.07 −0.10
oH2D+ oH2 −→ oH2D+ pH2 1.63(–10) −0.12 0.45
oH2D+ HD −→ pD2 2.57(–12) 0.02 149.17
oH2D+ HD −→ oD2 2.47(–12) −0.23 68.52
oH2D+ HD −→ pD2 7.61(–12) 0.12 176.79
oH2D+ HD −→ oD2 5.41(–12) −0.39 105.46
oH2D+ HD −→ pH2D+ HD 1.19(–10) 0.14 −1.82
oH2D+ HD −→ pD2H+ pH2 4.87(–11) −0.12 1.40
oH2D+ HD −→ pD2H+ oH2 2.47(–10) −0.08 0.21
oH2D+ HD −→ oD2H+ pH2 1.01(–10) −0.17 1.55
oH2D+ HD −→ oD2H+ oH2 5.03(–10) −0.02 −0.39
oH2D+ pD2 −→ oH2D+ oD2 6.80(–11) 0.23 −2.02
oH2D+ pD2 −→ pD2H+ HD 6.09(–10) −0.04 0.55
oH2D+ pD2 −→ oD2H+ HD 5.18(–10) −0.01 −0.31
oH2D+ pD2 −→ oH2 1.47(–11) −0.00 −0.51
oH2D+ pD2 −→ oH2 1.25(–10) −0.02 0.49
oH2D+ oD2 −→ oH2D+ pD2 4.85(–11) 0.11 86.31
oH2D+ oD2 −→ pD2H+ HD 2.77(–10) 0.00 −0.38
oH2D+ oD2 −→ oD2H+ HD 9.27(–10) 0.03 0.27
oH2D+ oD2 −→ oH2 9.09(–11) −0.25 0.75
oH2D+ oD2 −→ oH2 6.40(–11) −0.09 −0.05
pD2H+ pH2 −→ pD2 2.47(–11) −0.20 381.35
pD2H+ pH2 −→ pH2D+ HD 5.27(–10) 0.36 126.59
pD2H+ pH2 −→ oH2D+ HD 5.84(–10) 0.28 219.32
pD2H+ pH2 −→ pD2H+ oH2 3.47(–10) −0.58 188.14
pD2H+ oH2 −→ pD2 9.02(–12) −0.11 207.77
pD2H+ oH2 −→ pD2 1.85(–11) −0.38 250.37
pD2H+ oH2 −→ pH2D+ HD 1.64(–10) 0.34 −1.66
pD2H+ oH2 −→ oH2D+ HD 7.80(–10) 0.14 52.07
pD2H+ oH2 −→ pD2H+ pH2 1.75(–10) −0.21 1.38
pD2H+ HD −→ pH2D+ pD2 2.88(–11) 0.34 139.77
pD2H+ HD −→ pH2D+ oD2 1.47(–11) 0.15 53.58
pD2H+ HD −→ oH2D+ pD2 1.61(–10) 0.57 212.61
pD2H+ HD −→ oH2D+ oD2 5.26(–11) 0.12 141.51
pD2H+ HD −→ oD2H+ HD 6.58(–10) 0.29 −0.96
pD2H+ HD −→ pH2 7.74(–12) −0.27 1.86
pD2H+ HD −→ oH2 2.13(–11) −0.28 1.90
pD2H+ HD −→ pH2 6.50(–11) −0.22 1.31
pD2H+ HD −→ oH2 2.18(–10) −0.23 2.76
pD2H+ pD2 −→ pD2H+ oD2 5.56(–11) 0.03 −0.20
pD2H+ pD2 −→ oD2H+ pD2 1.01(–10) 0.36 −0.40
pD2H+ pD2 −→ oD2H+ oD2 1.80(–10) 0.10 0.25
pD2H+ pD2 −→ HD 7.29(–11) −0.08 −0.26
pD2H+ pD2 −→ HD 6.63(–10) −0.09 0.78
pD2H+ oD2 −→ pD2H+ pD2 4.84(–11) 0.14 83.39
pD2H+ oD2 −→ oD2H+ pD2 2.42(–10) 0.47 27.19
pD2H+ oD2 −→ oD2H+ oD2 1.67(–10) 0.26 1.16
pD2H+ oD2 −→ HD 5.55(–11) −0.13 1.40
pD2H+ oD2 −→ HD 2.56(–10) −0.06 0.74
pD2H+ oD2 −→ HD 5.84(–10) −0.11 0.51
oD2H+ pH2 −→ oD2 3.30(–11) 0.63 305.00
oD2H+ pH2 −→ pH2D+ HD 4.11(–10) 0.13 189.54
oD2H+ pH2 −→ oH2D+ HD 8.31(–10) 0.64 253.42
oD2H+ pH2 −→ oD2H+ oH2 3.28(–10) −0.24 181.12
oD2H+ oH2 −→ oD2 5.33(–12) −0.12 166.57
oD2H+ oH2 −→ oD2 1.03(–11) −0.37 205.33
oD2H+ oH2 −→ pH2D+ HD 1.27(–10) 0.23 12.37
oD2H+ oH2 −→ oH2D+ HD 8.41(–10) 0.11 101.33
oD2H+ oH2 −→ oD2H+ pH2 2.94(–10) −0.15 1.13
oD2H+ HD −→ pH2D+ pD2 2.42(–11) 1.11 158.60
oD2H+ HD −→ pH2D+ oD2 2.64(–11) 0.17 102.45
oD2H+ HD −→ oH2D+ pD2 2.97(–11) −0.21 294.12
oD2H+ HD −→ oH2D+ oD2 1.10(–10) 0.36 181.35
oD2H+ HD −→ pD2H+ HD 2.89(–10) −0.00 48.46
oD2H+ HD −→ pH2 8.51(–11) −0.20 1.88
oD2H+ HD −→ oH2 1.33(–10) −0.19 1.77
oD2H+ HD −→ pH2 5.61(–11) −0.29 2.55
oD2H+ HD −→ oH2 1.45(–10) −0.29 2.38
oD2H+ pD2 −→ pD2H+ pD2 4.45(–11) 0.08 49.87
oD2H+ pD2 −→ pD2H+ oD2 1.54(–10) −0.09 0.14
oD2H+ pD2 −→ oD2H+ oD2 1.31(–10) 0.08 −1.29
oD2H+ pD2 −→ HD 4.12(–11) −0.22 1.18
oD2H+ pD2 −→ HD 2.18(–10) −0.10 0.13
oD2H+ pD2 −→ HD 6.51(–10) −0.00 1.01
oD2H+ oD2 −→ pD2H+ pD2 6.58(–11) 0.08 136.47
oD2H+ oD2 −→ pD2H+ oD2 7.59(–11) −0.01 51.52
oD2H+ oD2 −→ oD2H+ pD2 1.21(–10) 0.62 72.62
oD2H+ oD2 −→ HD 5.71(–10) −0.01 0.04
oD2H+ oD2 −→ HD 5.04(–10) −0.06 1.06
pH2 −→ pH2D+ pD2 2.90(–10) 0.31 365.32
pH2 −→ pD2H+ HD 2.00(–09) 0.13 219.55
oH2 −→ oH2D+ pD2 3.50(–10) 0.17 279.17
oH2 −→ pD2H+ HD 1.61(–09) 0.00 52.33
HD −→ pD2H+ pD2 6.10(–10) 0.70 205.08
HD −→ pD2H+ oD2 2.34(–10) 0.04 143.00
HD −→ oD2H+ pD2 4.68(–10) 0.95 151.05
HD −→ HD 1.02(–09) 0.12 −1.12
pD2 −→ pD2 6.58(–10) 0.15 −1.81
pD2 −→ oD2 4.64(–10) −0.01 0.72
oD2 −→ pD2 1.61(–10) −0.44 27.64
oD2 −→ pD2 6.40(–10) 0.09 67.66
oD2 −→ oD2 4.51(–10) −0.13 0.45
pH2 −→ pH2D+ oD2 2.33(–10) 0.38 327.67
pH2 −→ oD2H+ HD 1.49(–09) 0.22 238.00
oH2 −→ oH2D+ oD2 2.30(–10) 0.21 253.72
oH2 −→ oD2H+ HD 1.54(–09) 0.01 65.35
HD −→ pD2H+ oD2 8.88(–11) −0.21 215.54
HD −→ oD2H+ pD2 1.66(–10) 0.59 229.82
HD −→ oD2H+ oD2 2.88(–10) 0.02 155.91
HD −→ HD 5.22(–10) −0.07 47.42
pD2 −→ oD2 3.73(–11) −0.34 2.64
pD2 −→ oD2 1.64(–10) 0.06 −1.24
pD2 −→ pD2 1.29(–10) 0.10 44.35
pD2 −→ oD2 8.88(–10) 0.15 −0.95
oD2 −→ pD2 1.16(–10) −0.26 86.93
oD2 −→ pD2 1.77(–10) 0.05 129.67
oD2 −→ oD2 5.00(–10) −0.14 47.58
pH2 −→ pH2D+ pD2 2.91(–10) 1.12 343.21
pH2 −→ pH2D+ oD2 4.63(–11) −0.58 322.57
pH2 −→ pD2H+ HD 1.29(–09) 0.34 222.77
pH2 −→ oD2H+ HD 9.42(–10) 0.33 176.04
oH2 −→ oH2D+ pD2 1.92(–10) 0.26 292.50
oH2 −→ oH2D+ oD2 1.31(–10) 0.33 199.48
oH2 −→ pD2H+ HD 8.00(–10) −0.05 66.26
oH2 −→ oD2H+ HD 5.18(–10) −0.18 19.08
HD −→ pD2H+ pD2 9.64(–11) −0.40 264.67
HD −→ pD2H+ oD2 1.66(–10) 0.02 159.79
HD −→ oD2H+ pD2 2.53(–10) 0.59 183.51
HD −→ oD2H+ oD2 2.23(–10) 0.41 94.92
HD −→ HD 5.52(–11) −0.25 18.88
HD −→ HD 2.35(–10) −0.02 −0.07
pD2 −→ pD2 3.31(–11) −0.23 18.23
pD2 −→ oD2 4.16(–11) −0.03 −0.00
pD2 −→ pD2 3.59(–11) −0.09 0.54
pD2 −→ oD2 2.85(–10) 0.70 −6.02
pD2 −→ oD2 4.91(–10) −0.08 0.61
oD2 −→ pD2 1.96(–11) −0.13 101.55
oD2 −→ oD2 3.00(–11) −0.42 19.93
oD2 −→ pD2 1.49(–10) −0.37 43.42
oD2 −→ oD2 1.71(–10) −0.20 1.46
oD2 −→ pD2 3.58(–10) 0.10 81.75

Notes. The fit parameters α, β, and γ correspond to the modified Arrhenius rate law k = α (T/ 300)β exp(−γ/T). The fit is valid in the temperature range 5–50 K. Reactions forbidden by spin selection rules and identity reactions were omitted. The notation a(b) denotes a × 10b.

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