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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-

HCN

Hydrogen cyanide
Flags: Detected, RATE12
Empirical: CHN
Mass: 27 amu
Dipole moment: 2.980 D
Heat of formation: 135.5 kJ mol-1
Added to system: 2003-04-28 18:00:51

Reactions: Formation | Destruction

121 HCN formation reactions

ReactionαβγTl - Tu (K)
1C- + NH → HCN + e-5.00e-10 0.00 0.0010 - 41000
2H- + CN → HCN + e-1.00e-10 0.00 0.0010 - 41000
3H + CN- → HCN + e-6.30e-10 0.00 0.0010 - 41000
4H+ + HNC → HCN + H+1.00e-9 0.00 0.0010 - 41000
5C2H2 + HCN+ → C2H2+ + HCN1.50e-9 0.00 0.0010 - 41000
6H2O + HCN+ → HCN + H2O+1.80e-9-0.50 0.0010 - 41000
7H + HCN+ → HCN + H+3.70e-11 0.00 0.0010 - 41000
8HCN+ + NO → NO+ + HCN8.10e-10 0.00 0.0010 - 41000
9HCN+ + O2 → O2+ + HCN3.20e-10 0.00 0.0010 - 41000
10HCN+ + S → S+ + HCN5.70e-10 0.00 0.0010 - 41000
11NH3 + HCN+ → HCN + NH3+1.68e-9-0.50 0.0010 - 41000
12H2CN + CRPHOT → HCN + H1.30e-17 0.00750.0010 - 41000
13CH2CHCNH+ + e- → C2H2 + HCN + H4.45e-7-0.80 0.0010 - 1000
14CH2CN+ + e- → HCN + CH1.50e-7-0.50 0.0010 - 300
15CH3CN+ + e- → HCN + CH21.50e-7-0.50 0.0010 - 300
16CH4N+ + e- → HCN + H2 + H3.00e-7-0.50 0.0010 - 300
17HC3N+ + e- → HCN + C23.60e-7-0.60 0.0010 - 300
18HC5NH+ + e- → HCN + C4H4.40e-7-0.70 0.0010 - 1000
19HCNH+ + e- → HCN + H9.50e-8-0.65 0.0010 - 300
20HCNOH+ + e- → HCN + OH1.00e-7-0.50 0.0010 - 300
21NH2CNH+ + e- → NH2 + HCN1.00e-7-0.50 0.0010 - 41000
22C+ + CH2CHCN → C3H2+ + HCN9.84e-10-0.50 0.0010 - 41000
23C+ + HC3N → C3+ + HCN2.50e-10-0.50 0.0010 - 41000
24C2H+ + HC3N → C4H+ + HCN7.60e-10-0.50 0.0010 - 41000
25C2H2+ + CH3CN → C3H4+ + HCN1.06e-9-0.50 0.0010 - 41000
26C2H2 + C2N+ → C3H+ + HCN8.00e-10 0.00 0.0010 - 41000
27C2H2 + C4N+ → C5H+ + HCN8.00e-10 0.00 0.0010 - 41000
28C2H2 + HC3N+ → C4H2+ + HCN5.12e-10 0.00 0.0010 - 41000
29CH2 + HCNH+ → HCN + CH3+4.35e-10 0.00 0.0010 - 41000
30CH3+ + CH3CN → C2H5+ + HCN6.66e-10-0.50 0.0010 - 41000
31CH3+ + HC3N → C3H3+ + HCN1.00e-9-0.50 0.0010 - 41000
32CH4 + C4N+ → C4H3+ + HCN1.71e-10 0.00 0.0010 - 41000
33CH4 + HC3N+ → C3H4+ + HCN8.30e-11 0.00 0.0010 - 41000
34CH + HCNH+ → HCN + CH2+3.15e-10-0.50 0.0010 - 41000
35CN+ + H2CO → HCO+ + HCN5.20e-10-0.50 0.0010 - 41000
36H+ + CH3CN → CH3+ + HCN3.00e-9-0.50 0.0010 - 41000
37H2 + C4N+ → C3H+ + HCN2.20e-11 0.00 0.0010 - 41000
38H2 + HC3N+ → HCN + C2H2+2.00e-12 0.00 0.0010 - 41000
39H2O + C2N+ → HCO+ + HCN2.30e-10-0.50 0.0010 - 41000
40CNC+ + H2O → HCO+ + HCN1.63e-9-0.50 0.0010 - 41000
41H2S + C2N+ → HCS+ + HCN1.20e-9-0.50 0.0010 - 41000
42HCNH+ + CH2CHCN → CH2CHCNH+ + HCN2.25e-9-0.50 0.0010 - 41000
43HCNH+ + CH3CN → CH3CNH+ + HCN1.90e-9-0.50 0.0010 - 41000
44HCNH+ + H2CO → H3CO+ + HCN1.05e-9-0.50 0.0010 - 41000
45HCNH+ + H2S → H3S+ + HCN1.70e-10-0.50 0.0010 - 41000
46HCNH+ + HC3N → HC3NH+ + HCN1.70e-9-0.50 0.0010 - 41000
47He+ + CH2CHCN → HCN + C2H2+ + He3.50e-9-0.50 0.0010 - 41000
48N + C2H2+ → HCN + CH+2.50e-11 0.00 0.0010 - 41000
49N + C3H5+ → C2H4+ + HCN1.10e-10 0.00 0.0010 - 41000
50N + C4H2+ → C3H+ + HCN1.71e-10 0.00 0.0010 - 41000
51N + C6H2+ → C5H+ + HCN1.90e-10 0.00 0.0010 - 41000
52N + C6H5+ → CH3C4H+ + HCN3.70e-11 0.00 0.0010 - 41000
53N + HC3N+ → C2N+ + HCN1.44e-10 0.00 0.0010 - 41000
54N + SiCH2+ → Si+ + HCN + H7.60e-10 0.00 0.0010 - 41000
55NH2 + HCNH+ → HCN + NH3+4.45e-10-0.50 0.0010 - 41000
56NH3 + C2N+ → HCNH+ + HCN1.80e-9-0.50 0.0010 - 41000
57CNC+ + NH3 → HCNH+ + HCN1.90e-9-0.50 0.0010 - 41000
58NH3 + HCNH+ → HCN + NH4+1.10e-9-0.50 0.0010 - 41000
59Na + HCNH+ → HCN + Na+ + H1.35e-9 0.00 0.0010 - 41000
60C- + HCNH+ → C + HCN + H3.76e-8-0.50 0.0010 - 41000
61C10- + HCNH+ → C10 + HCN + H3.76e-8-0.50 0.0010 - 41000
62C10H- + HCNH+ → C10H + HCN + H3.76e-8-0.50 0.0010 - 41000
63C2- + HCNH+ → C2 + HCN + H3.76e-8-0.50 0.0010 - 41000
64C2H- + HCNH+ → C2H + HCN + H3.76e-8-0.50 0.0010 - 41000
65C3- + HCNH+ → C3 + HCN + H3.76e-8-0.50 0.0010 - 41000
66C3H- + HCNH+ → C3H + HCN + H3.76e-8-0.50 0.0010 - 41000
67C3N- + HCNH+ → C3N + HCN + H3.76e-8-0.50 0.0010 - 41000
68C4- + HCNH+ → C4 + HCN + H3.76e-8-0.50 0.0010 - 41000
69C4H- + HCNH+ → C4H + HCN + H3.76e-8-0.50 0.0010 - 41000
70C5- + HCNH+ → C5 + HCN + H3.76e-8-0.50 0.0010 - 41000
71C5H- + HCNH+ → C5H + HCN + H3.76e-8-0.50 0.0010 - 41000
72C5N- + HCNH+ → C5N + HCN + H3.76e-8-0.50 0.0010 - 41000
73C6- + HCNH+ → C6 + HCN + H3.76e-8-0.50 0.0010 - 41000
74C6H- + HCNH+ → C6H + HCN + H3.76e-8-0.50 0.0010 - 41000
75C7- + HCNH+ → C7 + HCN + H3.76e-8-0.50 0.0010 - 41000
76C7H- + HCNH+ → C7H + HCN + H3.76e-8-0.50 0.0010 - 41000
77C8- + HCNH+ → C8 + HCN + H3.76e-8-0.50 0.0010 - 41000
78C8H- + HCNH+ → C8H + HCN + H3.76e-8-0.50 0.0010 - 41000
79C9- + HCNH+ → C9 + HCN + H3.76e-8-0.50 0.0010 - 41000
80C9H- + HCNH+ → C9H + HCN + H3.76e-8-0.50 0.0010 - 41000
81CH- + HCNH+ → CH + HCN + H3.76e-8-0.50 0.0010 - 41000
82CN- + HCNH+ → CN + HCN + H3.76e-8-0.50 0.0010 - 41000
83H- + HCNH+ → H + HCN + H3.76e-8-0.50 0.0010 - 41000
84O- + HCNH+ → O + HCN + H3.76e-8-0.50 0.0010 - 41000
85O2- + HCNH+ → O2 + HCN + H3.76e-8-0.50 0.0010 - 41000
86OH- + HCNH+ → OH + HCN + H3.76e-8-0.50 0.0010 - 41000
87S- + HCNH+ → S + HCN + H3.76e-8-0.50 0.0010 - 41000
88C2H2 + NO → HCN + CO + H8.97e-12 0.0018973.001100 - 1500
89C + NH2 → HCN + H3.26e-11-0.10-9.0010 - 300
90CH2 + CN → HCN + CH5.30e-12 0.002500.0083 - 300
91CH2 + N2 → HCN + NH8.00e-12 0.0018000.001500 - 2000
92CH2 + NO → HCN + OH3.65e-12 0.00 0.00300 - 2000
93CH3 + CN → HCN + CH29.21e-12 0.701500.0050 - 300
94CH3 + NO → HCN + H2O4.00e-12 0.007900.001100 - 2080
95CH4 + CN → HCN + CH33.14e-12 1.53504.00160 - 2500
96CH + N2 → HCN + N5.60e-13 0.8810128.001000 - 4000
97CH + NO → HCN + O1.20e-10-0.13 0.0013 - 708
98CN + C2H4 → C2H3 + HCN1.25e-10 0.7030.0025 - 2500
99CN + CH3CH3 → C2H5 + HCN2.34e-11 1.02-35.00185 - 1140
100CN + H2CO → HCO + HCN2.60e-10-0.47826.00297 - 2500
101CN + HCO → CO + HCN1.00e-10 0.00 0.0010 - 2500
102CN + HNO → NO + HCN3.00e-11 0.00 0.0010 - 2500
103CN + SiH4 → HCN + SiH32.20e-10 0.00 0.00296 - 296
104H2 + CN → HCN + H4.04e-13 2.87820.00200 - 3500
105H + H2CN → HCN + H21.00e-10 0.00 0.0010 - 300
106H + HNC → HCN + H1.14e-13 4.23-114.6010 - 1000
107H + NCCN → HCN + CN1.48e-10 0.003588.00300 - 2900
108H + OCN → HCN + O1.87e-11 0.902924.00500 - 2500
109HOCN + C → CO + HCN3.33e-11 0.00 0.0010 - 300
110N + C2H4 → HCN + CH33.69e-14 0.00161.00291 - 701
111N + CH2 → HCN + H3.95e-11 0.17 0.0010 - 300
112N + CH3 → HCN + H21.30e-11 0.50 0.0010 - 300
113N + CH3 → HCN + H + H3.32e-13 0.00 0.00253 - 352
114N + H2CN → HCN + NH1.00e-10 0.00200.00200 - 2500
115N + HCO → HCN + O1.70e-10 0.00 0.0010 - 300
116N + HCS → S + HCN1.00e-10 0.00 0.0010 - 300
117NH3 + CN → HCN + NH22.75e-11-1.14 0.0010 - 300
118NH + CN → HCN + N2.94e-12 0.501000.0033 - 300
119OH + CN → HCN + O1.00e-11 0.001000.00500 - 2500
120OH + NCCN → HCN + OCN3.11e-13 0.001450.00300 - 550
121H2CN + PHOTON → HCN + H5.48e-10 0.00 2.0010 - 41000

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