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.. common
H2
CO
H
OH
HCO+
C
H3+
C+
H2O
e-

.. in RATE12
C
C+
C-
C10
C10+
C10-
C10H
C10H+
C10H-
C10H2
C10H2+
C10H3+
C11
C11+
C2
C2+
C2-
C2H
C2H+
C2H-
C2H2
C2H2+
C2H3
C2H3+
C2H4
C2H4+
C2H5
C2H5+
C2H5CN
C2H5CNH+
C2H5OH
C2H5OH+
C2H5OH2+
C2H7+
C2N
C2N+
C2N2+
C2NH+
C2O
C2O+
C2S
C2S+
C3
C3+
C3-
C3H
C3H+
C3H-
C3H2
C3H2+
C3H2O+
C3H3+
C3H4+
C3H5+
C3H6+
C3H7+
C3N
C3N+
C3N-
C3O
C3O+
C3P
C3S
C3S+
C4
C4+
C4-
C4H
C4H+
C4H-
C4H2+
C4H3
C4H3+
C4H4+
C4H5+
C4H7+
C4N
C4N+
C4P
C4P+
C4S
C4S+
C5
C5+
C5-
C5H
C5H+
C5H-
C5H2
C5H2+
C5H3+
C5H5+
C5N
C5N+
C5N-
C6
C6+
C6-
C6H
C6H+
C6H-
C6H2
C6H2+
C6H3+
C6H4+
C6H5+
C6H6
C6H6+
C6H7+
C7
C7+
C7-
C7H
C7H+
C7H-
C7H2
C7H2+
C7H3+
C7H4+
C7H5+
C7N
C7N+
C8
C8+
C8-
C8H
C8H+
C8H-
C8H2
C8H2+
C8H3+
C8H4+
C8H5+
C9
C9+
C9-
C9H
C9H+
C9H-
C9H2
C9H2+
C9H3+
C9H4+
C9H5+
C9N
C9N+
CCP
CCP+
CCl
CCl+
CF+
CH
CH+
CH-
CH2
CH2+
CH2CCH
CH2CCH+
CH2CCH2
CH2CHCCH
CH2CHCHCH2
CH2CHCN
CH2CHCN+
CH2CHCNH+
CH2CN
CH2CN+
CH2CO
CH2CO+
CH2NH
CH2NH2+
CH2PH
CH3
CH3+
CH3C3N
CH3C3N+
CH3C3NH+
CH3C4H
CH3C4H+
CH3C5N
CH3C5NH+
CH3C6H
CH3C7N
CH3C7NH+
CH3CCH
CH3CH3
CH3CH3+
CH3CHCH2
CH3CHO
CH3CHO+
CH3CHOH+
CH3CN
CH3CN+
CH3CNH+
CH3CO+
CH3COCH3
CH3COCH3+
CH3COCH4+
CH3CS+
CH3OCH3
CH3OCH3+
CH3OCH4+
CH3OH
CH3OH+
CH3OH2+
CH4
CH4+
CH4N+
CH5+
CN
CN+
CN-
CNC+
CNO
CO
CO+
CO2
CO2+
COOCH4+
CP
CP+
CRP
CRPHOT
CS
CS+
Cl
Cl+
ClO
ClO+
F
F+
Fe
Fe+
H
H+
H-
H2
H2+
H2C4N+
H2C7N+
H2C9N+
H2CCC
H2CCl+
H2CN
H2CNO+
H2CO
H2CO+
H2CS
H2CS+
H2Cl+
H2F+
H2NC+
H2NCO+
H2NO+
H2O
H2O+
H2O2
H2OCN+
H2PO+
H2S
H2S+
H2S2
H2S2+
H2SiO
H2SiO+
H3+
H3C3O+
H3C5N+
H3C7N+
H3C9N+
H3CO+
H3CS+
H3O+
H3S+
H3S2+
H3SiO+
H5C2O2+
HC2O+
HC2P
HC2P+
HC2S+
HC3N
HC3N+
HC3NH+
HC3O+
HC3S+
HC4H
HC4N+
HC4S+
HC5N
HC5N+
HC5NH+
HC7N
HC7N+
HC9N
HC9N+
HCN
HCN+
HCNH+
HCNO
HCNO+
HCNOH+
HCO
HCO+
HCO2+
HCOOCH3
HCOOH
HCOOH+
HCOOH2+
HCP
HCP+
HCS
HCS+
HCSi
HCSi+
HCl
HCl+
HF
HF+
HN2O+
HNC
HNC3
HNCO
HNCO+
HNCOH+
HNO
HNO+
HNS+
HNSi
HNSi+
HOC+
HOCN
HOCN+
HOCS+
HONC
HONC+
HPN+
HPO
HPO+
HS
HS+
HS2
HS2+
HSO+
HSO2+
HSiO2+
HSiS+
He
He+
HeH+
Mg
Mg+
N
N+
N2
N2+
N2H+
N2O
N2O+
NCCN
NCCNCH3+
NCCNH+
NH
NH+
NH2
NH2+
NH2CN
NH2CNH+
NH3
NH3+
NH4+
NO
NO+
NO2
NO2+
NS
NS+
Na
Na+
O
O+
O-
O2
O2+
O2-
O2H
O2H+
OCN
OCN+
OCS
OCS+
OH
OH+
OH-
P
P+
PC2H2+
PC2H3+
PC2H4+
PC3H+
PC4H+
PCH2+
PCH3+
PCH4+
PH
PH+
PH2
PH2+
PH3+
PHOTON
PN
PN+
PNH2+
PNH3+
PO
PO+
S
S+
S-
S2
S2+
SO
SO+
SO2
SO2+
Si
Si+
SiC
SiC+
SiC2
SiC2+
SiC2H
SiC2H+
SiC2H2
SiC2H2+
SiC2H3+
SiC3
SiC3+
SiC3H
SiC3H+
SiC3H2+
SiC4
SiC4+
SiC4H+
SiCH2
SiCH2+
SiCH3
SiCH3+
SiCH4+
SiF+
SiH
SiH+
SiH2
SiH2+
SiH3
SiH3+
SiH4
SiH4+
SiH5+
SiN
SiN+
SiNC
SiNC+
SiNCH+
SiNH2+
SiO
SiO+
SiO2
SiOH+
SiS
SiS+
e-

O2

Molecular oxygen
Flags: RATE12
Empirical: O2
Mass: 32 amu
Heat of formation: 0 kJ mol-1
Added to system: 2003-05-06 06:43:21

Reactions: Formation | Destruction

119 O2 formation reactions

ReactionαβγTl - Tu (K)
1O- + O → O2 + e-1.90e-10 0.00 0.0010 - 41000
2O2- + O2 → O2 + O2 + e-7.00e-10 0.00 0.00200 - 700
3O2- + O2 → O2 + O2 + e-7.00e-10 0.00 0.00200 - 700
4C2 + O2+ → O2 + C2+4.10e-10 0.00 0.0010 - 41000
5C2H4 + O2+ → C2H4+ + O26.80e-10 0.00 0.0010 - 41000
6C + O2+ → O2 + C+5.20e-11 0.00 0.0010 - 41000
7CH2 + O2+ → O2 + CH2+4.30e-10 0.00 0.0010 - 41000
8CH + O2+ → O2 + CH+3.10e-10-0.50 0.0010 - 41000
9H2CO + O2+ → O2 + H2CO+2.07e-9-0.50 0.0010 - 41000
10HCO + O2+ → O2 + HCO+3.60e-10-0.50 0.0010 - 41000
11Mg + O2+ → O2 + Mg+1.20e-9 0.00 0.0010 - 41000
12NH2 + O2+ → O2 + NH2+8.70e-10-0.50 0.0010 - 41000
13NH3 + O2+ → O2 + NH3+2.00e-9-0.50 0.0010 - 41000
14NO + O2+ → O2 + NO+4.60e-10 0.00 0.0010 - 41000
15Na + O2+ → O2 + Na+7.10e-10 0.00 0.0010 - 41000
16C2H2 + O2+ → C2H2+ + O21.11e-9 0.00 0.0010 - 41000
17O2+ + CH2CCH2 → C3H4+ + O21.22e-9 0.00 0.0010 - 41000
18O2+ + CH3CHCH2 → C3H6+ + O27.50e-10 0.00 0.0010 - 41000
19O2+ + CH3OCH3 → CH3OCH3+ + O24.50e-10-0.50 0.0010 - 41000
20O2+ + CH3OH → CH3OH+ + O25.00e-10-0.50 0.0010 - 41000
21O2+ + Fe → Fe+ + O21.10e-9 0.00 0.0010 - 41000
22O2+ + H2S → H2S+ + O21.40e-9-0.50 0.0010 - 41000
23O2+ + HCOOH → HCOOH+ + O21.26e-10-0.50 0.0010 - 41000
24O2+ + NO2 → NO2+ + O26.60e-10 0.00 0.0010 - 41000
25O2+ + S → S+ + O25.40e-10 0.00 0.0010 - 41000
26Si + O2+ → O2 + Si+1.60e-9 0.00 0.0010 - 41000
27O2- + CRPHOT → O2 + e-1.30e-17 0.00250.0010 - 41000
28O2H + CRPHOT → O2 + H1.30e-17 0.00375.0010 - 41000
29O2H+ + e- → O2 + H3.00e-7-0.50 0.0010 - 300
30C2 + O2H+ → O2 + C2H+8.10e-10 0.00 0.0010 - 41000
31C2H + O2H+ → O2 + C2H2+7.60e-10 0.00 0.0010 - 41000
32C + O2H+ → O2 + CH+1.00e-9 0.00 0.0010 - 41000
33CH2 + O2H+ → O2 + CH3+8.50e-10 0.00 0.0010 - 41000
34CH + O2H+ → O2 + CH2+6.20e-10-0.50 0.0010 - 41000
35CN + O2H+ → O2 + HCN+8.60e-10-0.50 0.0010 - 41000
36CO + O2H+ → O2 + HCO+8.40e-10 0.00 0.0010 - 41000
37H2 + O2H+ → O2 + H3+6.40e-10 0.00 0.0080 - 300
38H2CO + O2+ → O2 + HCO+ + H2.30e-10-0.50 0.0010 - 41000
39H2CO + O2H+ → O2 + H3CO+9.80e-10-0.50 0.0010 - 41000
40H2O + O2H+ → O2 + H3O+8.20e-10-0.50 0.0010 - 41000
41HCN + O2H+ → O2 + HCNH+9.70e-10-0.50 0.0010 - 41000
42HCO + O2H+ → O2 + H2CO+7.10e-10-0.50 0.0010 - 41000
43HNC + O2H+ → O2 + HCNH+9.70e-10-0.50 0.0010 - 41000
44He+ + CO2 → O2 + C+ + He4.00e-11 0.00 0.0010 - 41000
45He+ + SO2 → S+ + O2 + He9.00e-10-0.50 0.0010 - 41000
46He+ + SiO2 → O2 + Si+ + He2.00e-9 0.00 0.0010 - 41000
47N2 + O2H+ → O2 + HN2+8.00e-10 0.00 0.0010 - 41000
48NH2 + O2H+ → O2 + NH3+8.70e-10-0.50 0.0010 - 41000
49NH3 + O2H+ → O2 + NH4+2.00e-9-0.50 0.0010 - 41000
50NH + O2H+ → O2 + NH2+6.30e-10-0.50 0.0010 - 41000
51NO + O2H+ → O2 + HNO+7.70e-10 0.00 0.0010 - 41000
52O+ + NO2 → O2 + NO+8.30e-10 0.00 0.0010 - 41000
53O+ + SO2 → SO+ + O23.60e-10-0.50 0.0010 - 41000
54O2+ + CH3OH → O2 + H3CO+ + H5.00e-10-0.50 0.0010 - 41000
55O2H+ + CO2 → HCO2+ + O21.10e-9 0.00 0.0010 - 41000
56O + HCO2+ → O2 + HCO+1.00e-9 0.00 0.0010 - 41000
57O + HPO+ → O2 + PH+2.00e-10 0.00 0.0010 - 41000
58O + O2H+ → O2 + OH+6.20e-10 0.00 0.0010 - 41000
59O + SiO+ → O2 + Si+2.00e-10 0.00 0.0010 - 41000
60OH + O2H+ → O2 + H2O+6.10e-10-0.50 0.0010 - 41000
61S + O2H+ → HS+ + O21.10e-9 0.00 0.0010 - 41000
62O2- + C+ → C + O27.51e-8-0.50 0.0010 - 41000
63O2- + C2H2+ → O2 + C2H27.51e-8-0.50 0.0010 - 41000
64O2- + C2H3+ → O2 + C2H37.51e-8-0.50 0.0010 - 41000
65O2- + C4H2+ → O2 + HC4H7.51e-8-0.50 0.0010 - 41000
66O2- + C4H3+ → O2 + C4H37.51e-8-0.50 0.0010 - 41000
67O2- + C4S+ → O2 + C4S7.51e-8-0.50 0.0010 - 41000
68O2- + CH2CCH+ → O2 + CH2CCH7.51e-8-0.50 0.0010 - 41000
69O2- + CH3+ → O2 + CH37.51e-8-0.50 0.0010 - 41000
70O2- + CNC+ → O2 + C2N7.51e-8-0.50 0.0010 - 41000
71O2- + Fe+ → O2 + Fe7.51e-8-0.50 0.0010 - 41000
72O2- + H+ → O2 + H7.51e-8-0.50 0.0010 - 41000
73O2- + H2CO+ → O2 + H2CO7.51e-8-0.50 0.0010 - 41000
74O2- + H2S+ → O2 + H2S7.51e-8-0.50 0.0010 - 41000
75O2- + H3+ → O2 + H2 + H7.51e-8-0.50 0.0010 - 41000
76O2- + H3O+ → O2 + H + H2O7.51e-8-0.50 0.0010 - 41000
77O2- + HC2S+ → O2 + C2S + H7.51e-8-0.50 0.0010 - 41000
78O2- + HCNH+ → O2 + HCN + H3.76e-8-0.50 0.0010 - 41000
79O2- + HCNH+ → O2 + HNC + H3.76e-8-0.50 0.0010 - 41000
80O2- + HCO+ → O2 + H + CO3.76e-8-0.50 0.0010 - 41000
81O2- + HCO+ → O2 + HCO3.76e-8-0.50 0.0010 - 41000
82O2- + He+ → O2 + He7.51e-8-0.50 0.0010 - 41000
83O2- + Mg+ → O2 + Mg7.51e-8-0.50 0.0010 - 41000
84O2- + N+ → O2 + N7.51e-8-0.50 0.0010 - 41000
85O2- + N2H+ → O2 + N2 + H7.51e-8-0.50 0.0010 - 41000
86O2- + NH3+ → O2 + NH37.51e-8-0.50 0.0010 - 41000
87O2- + NH4+ → O2 + NH3 + H7.51e-8-0.50 0.0010 - 41000
88O2- + NO+ → O2 + NO7.51e-8-0.50 0.0010 - 41000
89O2- + Na+ → O2 + Na7.51e-8-0.50 0.0010 - 41000
90O2- + O+ → O2 + O7.51e-8-0.50 0.0010 - 41000
91O2- + S+ → O2 + S7.51e-8-0.50 0.0010 - 41000
92O2- + SO+ → O2 + SO7.51e-8-0.50 0.0010 - 41000
93O2- + Si+ → O2 + Si7.51e-8-0.50 0.0010 - 41000
94O2- + SiO+ → O2 + SiO7.51e-8-0.50 0.0010 - 41000
95O2- + SiOH+ → O2 + SiO + H7.51e-8-0.50 0.0010 - 41000
96O2- + SiS+ → O2 + SiS7.51e-8-0.50 0.0010 - 41000
97CH3 + O2H → O2 + CH46.00e-12 0.00 0.0010 - 2500
98CH + O2H → O2 + CH22.94e-13 0.507550.00251 - 300
99H + O2H → O2 + H22.06e-11 0.84277.00230 - 2500
100HCO + O2H → O2 + H2CO5.00e-11 0.00 0.00300 - 2500
101N + NO2 → O2 + N21.00e-12 0.00 0.0010 - 300
102N + O2H → O2 + NH1.70e-13 0.00 0.0010 - 300
103NO + NO → O2 + N22.51e-11 0.0030653.001573 - 4700
104O2H + O2H → H2O2 + O21.00e-12 0.00 0.00200 - 1250
105O + CO2 → O2 + CO2.46e-11 0.0026567.00300 - 6000
106O + ClO → Cl + O23.80e-11 0.00 0.00200 - 2500
107O + HNO → O2 + NH2.94e-12 0.503500.00116 - 300
108O + N2O → O2 + N21.66e-10 0.0014100.00300 - 4100
109O + NO2 → O2 + NO9.82e-12-0.21 5.20200 - 2500
110O + NO → O2 + N1.18e-11 0.0020413.00200 - 5000
111O + O2H → O2 + OH5.76e-11-0.30 7.50200 - 2500
112O + OCN → O2 + CN4.02e-10-1.433501.00500 - 2500
113O + OH → O2 + H3.69e-11-0.2712.9010 - 500
114O + SO2 → SO + O29.01e-12 0.009837.00440 - 3760
115O + SO → S + O26.60e-13 0.002760.0092 - 300
116OH + O2H → O2 + H2O8.58e-11-0.5614.80200 - 2500
117O2- + PHOTON → O2 + e-6.10e-9 0.00 0.5010 - 41000
118O2H + PHOTON → O2 + H3.35e-10 0.00 2.1010 - 41000
119O + O → O2 + PHOTON4.90e-20 1.58 0.0010 - 300

Variation of log fractional abundance (relative to H2) with log time (years) in a dark cloud model. Ref. RATE12 paper.