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.. common
H2
H
CO
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-

C2H2

Acetylene
Flags: Detected, RATE12
Empirical: C2H2
Mass: 26 amu
Heat of formation: 228.6 kJ mol-1
Added to system: 2003-04-28 18:00:51

Reactions: Formation | Destruction

132 C2H2 formation reactions

ReactionαβγTl - Tu (K)
1C- + CH2 → C2H2 + e-5.00e-10 0.00 0.0010 - 41000
2H- + C2H → C2H2 + e-1.00e-9 0.00 0.0010 - 41000
3H + C2H- → C2H2 + e-1.60e-9 0.00 0.0010 - 300
4C2H2+ + C2H3 → C2H3+ + C2H23.30e-10-0.50 0.0010 - 300
5C2H2+ + C2H4 → C2H4+ + C2H24.14e-10 0.00 0.0010 - 41000
6C2H2+ + C5H2 → C5H2+ + C2H21.00e-9-0.50 0.0010 - 300
7C2H2+ + C6H2 → C6H2+ + C2H25.00e-10-0.50 0.0010 - 300
8C2H2+ + C7H2 → C7H2+ + C2H21.00e-9-0.50 0.0010 - 300
9C2H2+ + CH2CCH → C3H3+ + C2H21.00e-9-0.50 0.0010 - 41000
10C2H2+ + CH3CCH → C3H4+ + C2H25.00e-10 0.00 0.0010 - 300
11C2H2+ + Fe → Fe+ + C2H22.00e-9 0.00 0.0010 - 41000
12C2H2+ + H2CO → H2CO+ + C2H28.60e-10-0.50 0.0010 - 41000
13C2H2+ + H2S → H2S+ + C2H22.20e-9-0.50 0.0010 - 41000
14C2H2+ + HC4H → C4H2+ + C2H21.26e-9 0.00 0.0010 - 300
15C2H2+ + HCO → HCO+ + C2H25.00e-10-0.50 0.0010 - 41000
16C2H2+ + NO → NO+ + C2H21.20e-10 0.00 0.0010 - 41000
17C2H2 + CH2CCH+ → C3H3+ + C2H22.50e-10 0.00 0.0010 - 41000
18Mg + C2H2+ → C2H2 + Mg+3.00e-9 0.00 0.0010 - 41000
19NH3 + C2H2+ → C2H2 + NH3+2.14e-9-0.50 0.0010 - 41000
20Na + C2H2+ → C2H2 + Na+2.70e-9 0.00 0.0010 - 41000
21C2H3 + CRPHOT → C2H2 + H1.30e-17 0.001500.0010 - 41000
22C2H4 + CRPHOT → C2H2 + H21.30e-17 0.001881.0010 - 41000
23C2H3+ + e- → C2H2 + H1.45e-7-0.84 0.0050 - 1000
24C2H3+ + e- → C2H2 + H2.78e-7-1.38 0.001000 - 30000
25C2H4+ + e- → C2H2 + H23.36e-8-0.76 0.0010 - 300
26C2H4+ + e- → C2H2 + H + H3.70e-7-0.76 0.0010 - 300
27C2H5+ + e- → C2H2 + H2 + H8.12e-8-0.79 0.0010 - 300
28C2H5+ + e- → C2H2 + H + H + H3.64e-8-0.79 0.0010 - 300
29C3H2+ + e- → C2H2 + C3.00e-8-0.50 0.0010 - 300
30C3H2O+ + e- → CO + C2H21.50e-7-0.50 0.0010 - 300
31C3H7+ + e- → C2H2 + CH3 + H22.53e-8-0.73 0.0010 - 300
32CH2CCH+ + e- → C2H2 + CH5.00e-8-0.50 0.0010 - 300
33CH2CHCNH+ + e- → C2H2 + HCN + H4.45e-7-0.80 0.0010 - 1000
34CH2CO+ + e- → C2H2 + O2.00e-7-0.50 0.0010 - 300
35HC3NH+ + e- → C2H2 + CN7.20e-7-0.58 0.0010 - 300
36PC2H2+ + e- → P + C2H21.00e-7-0.50 0.0010 - 300
37PC2H3+ + e- → PH + C2H21.00e-7-0.50 0.0010 - 300
38C+ + CH2CCH2 → C2H2+ + C2H22.80e-10 0.00 0.0010 - 41000
39C+ + CH3CCH → C2H2+ + C2H21.90e-10 0.00 0.0010 - 41000
40C2H3+ + C2H4 → C2H5+ + C2H28.90e-10 0.00 0.0010 - 41000
41C2H3+ + C3H2 → C3H3+ + C2H28.00e-10-0.50 0.0010 - 41000
42C2H3+ + C3H → C3H2+ + C2H21.00e-9-0.50 0.0010 - 41000
43C2H3+ + C4H → C4H2+ + C2H24.00e-10-0.50 0.0010 - 41000
44C2H3+ + C5H2 → C5H3+ + C2H28.00e-10-0.50 0.0010 - 41000
45C2H3+ + C5H → C5H2+ + C2H21.00e-9-0.50 0.0010 - 41000
46C2H3+ + C6H2 → C6H3+ + C2H23.00e-10-0.50 0.0010 - 41000
47C2H3+ + C6H6 → C6H7+ + C2H21.60e-9 0.00 0.0010 - 41000
48C2H3+ + C6H → C6H2+ + C2H25.00e-10-0.50 0.0010 - 41000
49C2H3+ + C7H2 → C7H3+ + C2H28.00e-10-0.50 0.0010 - 41000
50C2H3+ + C7H → C7H2+ + C2H21.10e-9-0.50 0.0010 - 41000
51C2H3+ + CH2CCH → C3H4+ + C2H21.00e-9-0.50 0.0010 - 41000
52C2H3+ + CH3CCH → C3H5+ + C2H25.00e-10 0.00 0.0010 - 41000
53C2H3+ + H2CCC → CH2CCH+ + C2H28.00e-10-0.50 0.0010 - 41000
54C2H3+ + H2S → H3S+ + C2H28.40e-10-0.50 0.0010 - 41000
55C2H3+ + HC3N → HC3NH+ + C2H23.80e-9-0.50 0.0010 - 41000
56C2H3+ + HC4H → C4H3+ + C2H23.00e-10 0.00 0.0010 - 41000
57C2H3+ + NCCN → NCCNH+ + C2H21.10e-9 0.00 0.0010 - 41000
58C2H3 + C2H4+ → C2H5+ + C2H25.00e-10-0.50 0.0010 - 41000
59C2H4 + C3+ → C3H2+ + C2H21.35e-10 0.00 0.0010 - 41000
60C2H4 + C3H+ → CH2CCH+ + C2H29.00e-10 0.00 0.0010 - 41000
61C2H4 + C3H2+ → C3H4+ + C2H26.60e-10 0.00 0.0010 - 41000
62C2H4 + C4H+ → C4H3+ + C2H27.50e-10 0.00 0.0010 - 41000
63C2H4 + C5+ → C5H2+ + C2H25.10e-10 0.00 0.0010 - 41000
64C2H4 + C6H5+ → C6H7+ + C2H28.50e-11 0.00 0.0010 - 41000
65C2H + C2H3+ → C2H2+ + C2H23.30e-10 0.00 0.0010 - 300
66C3H+ + HC4H → C5H+ + C2H21.20e-10 0.00 0.0010 - 41000
67C3H2+ + CH2CCH2 → C4H4+ + C2H27.00e-10 0.00 0.0010 - 41000
68C3H2+ + CH3CCH → C4H4+ + C2H25.33e-10 0.00 0.0010 - 41000
69C3H3+ + HC4H → C5H3+ + C2H21.06e-9 0.00 0.0010 - 41000
70C4H2+ + HC4H → C6H2+ + C2H21.30e-10 0.00 0.0010 - 41000
71C + SiCH2+ → Si+ + C2H21.00e-9 0.00 0.0010 - 41000
72CH2CCH+ + HC4H → C5H3+ + C2H21.06e-9 0.00 0.0010 - 41000
73CH3+ + HC4H → CH2CCH+ + C2H21.27e-9 0.00 0.0010 - 41000
74CH3CCH + C4H2+ → CH3C4H+ + C2H21.40e-10 0.00 0.0010 - 41000
75CH4 + C3H+ → C2H3+ + C2H27.83e-10 0.00 0.0010 - 41000
76CH4 + C4+ → C3H2+ + C2H21.56e-10 0.00 0.0010 - 41000
77CH4 + C4N+ → HC3NH+ + C2H22.00e-10 0.00 0.0010 - 41000
78CH4 + C5+ → C4H2+ + C2H22.64e-10 0.00 0.0010 - 41000
79CH4 + C6+ → C5H2+ + C2H22.32e-10 0.00 0.0010 - 41000
80H2O + C2H3+ → C2H2 + H3O+1.11e-9-0.50 0.0010 - 41000
81H2O + C3H+ → HCO+ + C2H22.48e-10-0.50 0.0010 - 41000
82H2S + C3H+ → HCS+ + C2H27.56e-10-0.50 0.0010 - 41000
83HC4H + C4H3+ → C6H3+ + C2H21.00e-10 0.00 0.0010 - 41000
84HC4H + C4H4+ → C6H4+ + C2H27.00e-10 0.00 0.0010 - 41000
85HCN + C2H3+ → HCNH+ + C2H22.90e-9-0.50 0.0010 - 41000
86HNC + C2H3+ → HCNH+ + C2H22.90e-9-0.50 0.0010 - 41000
87NH3 + C2H3+ → C2H2 + NH4+2.50e-9-0.50 0.0010 - 41000
88NH3 + C3H+ → H2NC+ + C2H24.80e-10-0.50 0.0010 - 41000
89O + C3H3+ → HCO+ + C2H22.00e-10 0.00 0.0010 - 41000
90O + CH2CCH+ → HCO+ + C2H22.00e-10 0.00 0.0010 - 41000
91Si+ + CH3CCH → SiCH2+ + C2H21.80e-10 0.00 0.0010 - 41000
92C- + C2H2+ → C + C2H27.51e-8-0.50 0.0010 - 41000
93C10- + C2H2+ → C10 + C2H27.51e-8-0.50 0.0010 - 41000
94C10H- + C2H2+ → C10H + C2H27.51e-8-0.50 0.0010 - 41000
95C2- + C2H2+ → C2 + C2H27.51e-8-0.50 0.0010 - 41000
96C2H- + C2H2+ → C2H + C2H27.51e-8-0.50 0.0010 - 41000
97C3- + C2H2+ → C3 + C2H27.51e-8-0.50 0.0010 - 41000
98C3H- + C2H2+ → C3H + C2H27.51e-8-0.50 0.0010 - 41000
99C3N- + C2H2+ → C3N + C2H27.51e-8-0.50 0.0010 - 41000
100C4- + C2H2+ → C4 + C2H27.51e-8-0.50 0.0010 - 41000
101C4H- + C2H2+ → C4H + C2H27.51e-8-0.50 0.0010 - 41000
102C5- + C2H2+ → C5 + C2H27.51e-8-0.50 0.0010 - 41000
103C5H- + C2H2+ → C5H + C2H27.51e-8-0.50 0.0010 - 41000
104C5N- + C2H2+ → C5N + C2H27.51e-8-0.50 0.0010 - 41000
105C6- + C2H2+ → C6 + C2H27.51e-8-0.50 0.0010 - 41000
106C6H- + C2H2+ → C6H + C2H27.51e-8-0.50 0.0010 - 41000
107C7- + C2H2+ → C7 + C2H27.51e-8-0.50 0.0010 - 41000
108C7H- + C2H2+ → C7H + C2H27.51e-8-0.50 0.0010 - 41000
109C8- + C2H2+ → C8 + C2H27.51e-8-0.50 0.0010 - 41000
110C8H- + C2H2+ → C8H + C2H27.51e-8-0.50 0.0010 - 41000
111C9- + C2H2+ → C9 + C2H27.51e-8-0.50 0.0010 - 41000
112C9H- + C2H2+ → C9H + C2H27.51e-8-0.50 0.0010 - 41000
113CH- + C2H2+ → CH + C2H27.51e-8-0.50 0.0010 - 41000
114CN- + C2H2+ → CN + C2H27.51e-8-0.50 0.0010 - 41000
115H- + C2H2+ → H + C2H27.51e-8-0.50 0.0010 - 41000
116O- + C2H2+ → O + C2H27.51e-8-0.50 0.0010 - 41000
117O2- + C2H2+ → O2 + C2H27.51e-8-0.50 0.0010 - 41000
118OH- + C2H2+ → OH + C2H27.51e-8-0.50 0.0010 - 41000
119S- + C2H2+ → S + C2H27.51e-8-0.50 0.0010 - 41000
120C2H3 + O2 → O2H + C2H23.15e-14 1.45-52.00300 - 3500
121C + CH3 → C2H2 + H1.00e-10 0.00 0.0010 - 300
122CH2 + CH2 → C2H2 + H22.63e-9 0.006013.001100 - 2720
123CH2 + CH2 → C2H2 + H + H1.80e-10 0.00400.00300 - 3000
124CH3 + C2H3 → C2H2 + CH41.70e-10-1.50300.00300 - 900
125H2 + C2H → C2H2 + H9.11e-13 2.57130.00220 - 2200
126H + C2H3 → C2H2 + H23.32e-11 0.00 0.00300 - 2500
127N + C2H3 → C2H2 + NH1.20e-11 0.00 0.0010 - 300
128O + H2CCC → CO + C2H25.00e-11 0.50 0.0010 - 300
129OH + C2H3 → C2H2 + H2O5.00e-11 0.00 0.0010 - 2500
130C2H3 + PHOTON → C2H2 + H1.00e-9 0.00 1.7010 - 41000
131C2H4 + PHOTON → C2H2 + H23.00e-9 0.00 2.1010 - 41000
132C6H6 + PHOTON → C2H2 + CH2CHCCH1.00e-11 0.00 1.7010 - 41000

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