C₂H

Ethynyl radical
Flags: Detected, RATE12
Empirical: C₂H
Mass: 25 amu
Dipole moment: 0.800 D
Heat of formation: 560.0 kJ mol^-1
Added to system: 2003-04-28 18:00:51

Reactions: Formation | Destruction

109 C₂H formation reactions

	Reaction	α	β	γ	T_l - T_u (K)
1	C^- + CH → C₂H + e^-	5.00e-10	0.00	0.00	10 - 41000
2	C + CH^- → C₂H + e^-	1.00e-9	0.00	0.00	10 - 300
3	H^- + C₂ → C₂H + e^-	1.00e-9	0.00	0.00	10 - 41000
4	H + C₂^- → C₂H + e^-	7.70e-9	0.00	0.00	10 - 300
5	C₂H⁺ + NO → NO⁺ + C₂H	1.20e-10	0.00	0.00	10 - 41000
6	C₂H⁺ + S → S⁺ + C₂H	1.20e-9	0.00	0.00	10 - 41000
7	C₂H^- + CRPHOT → C₂H + e^-	1.30e-17	0.00	250.00	10 - 41000
8	C₂H₂ + CRPHOT → C₂H + H	1.30e-17	0.00	2577.50	10 - 41000
9	C₄H + CRPHOT → C₂H + C₂	1.30e-17	0.00	2500.00	10 - 41000
10	C₅H₂ + CRPHOT → C₃H + C₂H	1.30e-17	0.00	875.00	10 - 41000
11	C₅H + CRPHOT → C₃ + C₂H	1.30e-17	0.00	2500.00	10 - 41000
12	C₆H₂ + CRPHOT → C₄H + C₂H	1.30e-17	0.00	875.00	10 - 41000
13	C₆H + CRPHOT → C₄ + C₂H	1.30e-17	0.00	2500.00	10 - 41000
14	HC₃N + CRPHOT → CN + C₂H	1.30e-17	0.00	863.50	10 - 41000
15	HC₄H + CRPHOT → C₂H + C₂H	1.30e-17	0.00	865.00	10 - 41000
16	HC₄H + CRPHOT → C₂H + C₂H	1.30e-17	0.00	865.00	10 - 41000
17	HNC₃ + CRPHOT → C₂H + CN	1.30e-17	0.00	1725.00	10 - 41000
18	C₂H₂⁺ + e^- → C₂H + H	9.00e-8	-0.50	0.00	10 - 300
19	C₂H₃⁺ + e^- → C₂H + H₂	3.00e-8	-0.84	0.00	50 - 1000
20	C₂H₃⁺ + e^- → C₂H + H₂	5.75e-8	-1.38	0.00	1000 - 30000
21	C₂H₃⁺ + e^- → C₂H + H + H	2.95e-7	-0.84	0.00	50 - 1000
22	C₂H₃⁺ + e^- → C₂H + H + H	5.65e-7	-1.38	0.00	1000 - 30000
23	C₂H₄⁺ + e^- → C₂H + H₂ + H	5.60e-8	-0.76	0.00	10 - 300
24	C₃H⁺ + e^- → C₂H + C	1.50e-7	-0.50	0.00	10 - 300
25	C₃H₄⁺ + e^- → CH₃ + C₂H	2.60e-7	-0.67	0.00	10 - 300
26	C₄H₂⁺ + e^- → C₂H + C₂H	2.75e-7	-0.79	0.00	10 - 1000
27	C₄H₂⁺ + e^- → C₂H + C₂H	2.75e-7	-0.79	0.00	10 - 1000
28	HC₂O⁺ + e^- → C₂H + O	1.50e-7	-0.50	0.00	10 - 300
29	HC₃N⁺ + e^- → CN + C₂H	3.60e-7	-0.60	0.00	10 - 300
30	HC₄S⁺ + e^- → C₂S + C₂H	1.00e-7	-0.50	0.00	10 - 300
31	HC₅N⁺ + e^- → C₃N + C₂H	1.50e-7	-0.50	0.00	10 - 300
32	HC₅NH⁺ + e^- → HC₃N + C₂H	1.20e-7	-0.70	0.00	10 - 1000
33	PC₄H⁺ + e^- → CCP + C₂H	7.50e-8	-0.50	0.00	10 - 300
34	SiC₂H⁺ + e^- → Si + C₂H	1.50e-7	-0.50	0.00	10 - 300
35	C⁺ + C₄H₃ → C₃H₂⁺ + C₂H	3.10e-10	0.00	0.00	10 - 300
36	C⁺ + CH₃CCH → C₂H₃⁺ + C₂H	1.90e-10	0.00	0.00	10 - 41000
37	C⁺ + HC₂P → CP⁺ + C₂H	5.00e-10	0.00	0.00	10 - 41000
38	C⁺ + HC₃N → C₂N⁺ + C₂H	1.00e-10	-0.50	0.00	10 - 41000
39	C⁺ + HC₄H → C₃H⁺ + C₂H	1.45e-10	0.00	0.00	10 - 41000
40	C₂H₂⁺ + CH₃CN → CH₃CNH⁺ + C₂H	8.36e-10	-0.50	0.00	10 - 41000
41	C₂H₂⁺ + H₂S → H₃S⁺ + C₂H	4.60e-11	-0.50	0.00	10 - 41000
42	C₂H₂⁺ + HCN → HCNH⁺ + C₂H	2.30e-10	-0.50	0.00	10 - 41000
43	C₂H₂⁺ + HNC → HCNH⁺ + C₂H	2.30e-10	-0.50	0.00	10 - 41000
44	C₂H₃⁺ + C₂H₃ → C₂H₅⁺ + C₂H	5.00e-10	-0.50	0.00	10 - 41000
45	C₃H⁺ + HC₄H → C₅H₂⁺ + C₂H	1.00e-9	0.00	0.00	10 - 41000
46	H₂O + C₂H₂⁺ → C₂H + H₃O⁺	2.20e-10	-0.50	0.00	10 - 41000
47	HC₄H + C₅H₂⁺ → C₇H₃⁺ + C₂H	6.00e-10	0.00	0.00	10 - 41000
48	HNC₃ + H⁺ → HCN⁺ + C₂H	3.23e-9	-0.50	0.00	10 - 41000
49	He⁺ + C₅H₂ → C₃H⁺ + C₂H + He	1.00e-9	-0.50	0.00	10 - 41000
50	He⁺ + C₆H₂ → C₄H⁺ + C₂H + He	1.00e-9	-0.50	0.00	10 - 41000
51	He⁺ + C₇H₂ → C₅H⁺ + C₂H + He	1.00e-9	-0.50	0.00	10 - 41000
52	He⁺ + C₈H₂ → C₆H⁺ + C₂H + He	1.00e-9	-0.50	0.00	10 - 41000
53	He⁺ + C₉H₂ → C₇H⁺ + C₂H + He	1.00e-9	-0.50	0.00	10 - 41000
54	He⁺ + HC₄H → C₂H⁺ + C₂H + He	1.00e-9	0.00	0.00	10 - 41000
55	He⁺ + SiC₂H₂ → SiH⁺ + C₂H + He	1.00e-9	-0.50	0.00	10 - 41000
56	He⁺ + SiC₂H → Si⁺ + C₂H + He	1.00e-9	-0.50	0.00	10 - 41000
57	N + C₃H^- → CN^- + C₂H	2.50e-12	0.00	0.00	10 - 300
58	NH₂ + C₂H₂⁺ → C₂H + NH₃⁺	4.50e-10	-0.50	0.00	10 - 41000
59	NH₃ + C₂H₂⁺ → C₂H + NH₄⁺	9.61e-10	-0.50	0.00	10 - 41000
60	O + C₃H₂⁺ → HCO⁺ + C₂H	2.00e-10	0.00	0.00	10 - 41000
61	C₂H^- + C⁺ → C + C₂H	7.51e-8	-0.50	0.00	10 - 41000
62	C₂H^- + C₂H₂⁺ → C₂H + C₂H₂	7.51e-8	-0.50	0.00	10 - 41000
63	C₂H^- + C₂H₃⁺ → C₂H + C₂H₃	7.51e-8	-0.50	0.00	10 - 41000
64	C₂H^- + C₄H₂⁺ → C₂H + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
65	C₂H^- + C₄H₃⁺ → C₂H + C₄H₃	7.51e-8	-0.50	0.00	10 - 41000
66	C₂H^- + C₄S⁺ → C₂H + C₄S	7.51e-8	-0.50	0.00	10 - 41000
67	C₂H^- + CH₂CCH⁺ → C₂H + CH₂CCH	7.51e-8	-0.50	0.00	10 - 41000
68	C₂H^- + CH₃⁺ → C₂H + CH₃	7.51e-8	-0.50	0.00	10 - 41000
69	C₂H^- + CNC⁺ → C₂H + C₂N	7.51e-8	-0.50	0.00	10 - 41000
70	C₂H^- + Fe⁺ → C₂H + Fe	7.51e-8	-0.50	0.00	10 - 41000
71	C₂H^- + H⁺ → C₂H + H	7.51e-8	-0.50	0.00	10 - 41000
72	C₂H^- + H₂CO⁺ → C₂H + H₂CO	7.51e-8	-0.50	0.00	10 - 41000
73	C₂H^- + H₂S⁺ → C₂H + H₂S	7.51e-8	-0.50	0.00	10 - 41000
74	C₂H^- + H₃⁺ → C₂H + H₂ + H	7.51e-8	-0.50	0.00	10 - 41000
75	C₂H^- + H₃O⁺ → C₂H + H + H₂O	7.51e-8	-0.50	0.00	10 - 41000
76	C₂H^- + HC₂S⁺ → C₂H + C₂S + H	7.51e-8	-0.50	0.00	10 - 41000
77	C₂H^- + HCNH⁺ → C₂H + HCN + H	3.76e-8	-0.50	0.00	10 - 41000
78	C₂H^- + HCNH⁺ → C₂H + HNC + H	3.76e-8	-0.50	0.00	10 - 41000
79	C₂H^- + HCO⁺ → C₂H + H + CO	3.76e-8	-0.50	0.00	10 - 41000
80	C₂H^- + HCO⁺ → C₂H + HCO	3.76e-8	-0.50	0.00	10 - 41000
81	C₂H^- + He⁺ → C₂H + He	7.51e-8	-0.50	0.00	10 - 41000
82	C₂H^- + Mg⁺ → C₂H + Mg	7.51e-8	-0.50	0.00	10 - 41000
83	C₂H^- + N⁺ → C₂H + N	7.51e-8	-0.50	0.00	10 - 41000
84	C₂H^- + N₂H⁺ → C₂H + N₂ + H	7.51e-8	-0.50	0.00	10 - 41000
85	C₂H^- + NH₃⁺ → C₂H + NH₃	7.51e-8	-0.50	0.00	10 - 41000
86	C₂H^- + NH₄⁺ → C₂H + NH₃ + H	7.51e-8	-0.50	0.00	10 - 41000
87	C₂H^- + NO⁺ → C₂H + NO	7.51e-8	-0.50	0.00	10 - 41000
88	C₂H^- + Na⁺ → C₂H + Na	7.51e-8	-0.50	0.00	10 - 41000
89	C₂H^- + O⁺ → C₂H + O	7.51e-8	-0.50	0.00	10 - 41000
90	C₂H^- + S⁺ → C₂H + S	7.51e-8	-0.50	0.00	10 - 41000
91	C₂H^- + SO⁺ → C₂H + SO	7.51e-8	-0.50	0.00	10 - 41000
92	C₂H^- + Si⁺ → C₂H + Si	7.51e-8	-0.50	0.00	10 - 41000
93	C₂H^- + SiO⁺ → C₂H + SiO	7.51e-8	-0.50	0.00	10 - 41000
94	C₂H^- + SiOH⁺ → C₂H + SiO + H	7.51e-8	-0.50	0.00	10 - 41000
95	C₂H^- + SiS⁺ → C₂H + SiS	7.51e-8	-0.50	0.00	10 - 41000
96	C + CH₂ → C₂H + H	1.00e-10	0.00	0.00	10 - 300
97	H + C₂H₂ → C₂H + H₂	3.80e-10	0.00	13634.00	295 - 6920
98	HCNO + C → C₂H + NO	3.33e-11	0.00	0.00	10 - 300
99	O + C₃H → CO + C₂H	1.00e-10	0.00	0.00	10 - 2500
100	OH + C₂H₂ → C₂H + H₂O	1.05e-13	2.68	6060.00	300 - 2500
101	C₂H^- + PHOTON → C₂H + e^-	2.99e-9	0.00	2.00	10 - 41000
102	C₂H₂ + PHOTON → C₂H + H	3.30e-9	0.00	2.30	10 - 41000
103	C₄H + PHOTON → C₂H + C₂	1.85e-9	0.00	2.00	10 - 41000
104	C₅H₂ + PHOTON → C₃H + C₂H	1.00e-11	0.00	1.70	10 - 41000
105	C₅H + PHOTON → C₃ + C₂H	4.33e-10	0.00	1.40	10 - 41000
106	C₆H + PHOTON → C₄ + C₂H	5.00e-12	0.00	1.70	10 - 41000
107	HC₃N + PHOTON → CN + C₂H	5.60e-9	0.00	2.20	10 - 41000
108	HC₄H + PHOTON → C₂H + C₂H	1.90e-9	0.00	1.60	10 - 41000
109	HC₄H + PHOTON → C₂H + C₂H	1.90e-9	0.00	1.60	10 - 41000

	Reaction	α	β	γ	T_l - T_u (K)
1	H^- + C₂H → C₂H₂ + e^-	1.00e-9	0.00	0.00	10 - 41000
2	C₂H + CN⁺ → CN + C₂H⁺	8.00e-10	0.00	0.00	10 - 41000
3	C₂H + CO⁺ → CO + C₂H⁺	3.90e-10	0.00	0.00	10 - 41000
4	C₂H + N₂⁺ → N₂ + C₂H⁺	7.90e-10	0.00	0.00	10 - 41000
5	H⁺ + C₂H → C₂H⁺ + H	1.50e-9	0.00	0.00	10 - 41000
6	H₂⁺ + C₂H → C₂H⁺ + H₂	1.00e-9	0.00	0.00	10 - 41000
7	H₂O⁺ + C₂H → C₂H⁺ + H₂O	4.40e-10	0.00	0.00	10 - 41000
8	N⁺ + C₂H → C₂H⁺ + N	9.50e-10	0.00	0.00	10 - 41000
9	O⁺ + C₂H → C₂H⁺ + O	4.60e-10	0.00	0.00	10 - 41000
10	OH⁺ + C₂H → C₂H⁺ + OH	4.50e-10	0.00	0.00	10 - 41000
11	C₂H + CRPHOT → C₂ + H	1.30e-17	0.00	2500.00	10 - 41000
12	C₂H + CRPHOT → C₂H⁺ + e^-	1.30e-17	0.00	2500.00	10 - 41000
13	C⁺ + C₂H → C₃⁺ + H	1.00e-9	0.00	0.00	10 - 41000
14	C₂H + C₂H₂⁺ → C₄H₂⁺ + H	1.40e-9	0.00	0.00	10 - 41000
15	C₂H + C₂H₃⁺ → C₂H₂⁺ + C₂H₂	3.30e-10	0.00	0.00	10 - 300
16	C₂H + C₂H₃⁺ → C₄H₂⁺ + H₂	3.30e-10	0.00	0.00	10 - 41000
17	C₂H + C₂H₃⁺ → C₄H₃⁺ + H	3.30e-10	0.00	0.00	10 - 41000
18	C₂H + C₂H₄⁺ → C₄H₃⁺ + H₂	5.00e-10	0.00	0.00	10 - 41000
19	C₂H + C₂H₄⁺ → CH₂CCH⁺ + CH₂	5.00e-10	0.00	0.00	10 - 41000
20	C₂H + C₃H₂⁺ → C₅H₂⁺ + H	1.00e-9	0.00	0.00	10 - 41000
21	C₂H + C₃H₃⁺ → C₅H₂⁺ + H₂	7.50e-10	0.00	0.00	10 - 41000
22	C₂H + C₃H₃⁺ → C₅H₃⁺ + H	7.50e-10	0.00	0.00	10 - 41000
23	C₂H + C₄H⁺ → C₆⁺ + H₂	6.00e-10	0.00	0.00	10 - 41000
24	C₂H + C₄H⁺ → C₆H⁺ + H	6.00e-10	0.00	0.00	10 - 41000
25	C₂H + C₄H₂⁺ → C₆H₂⁺ + H	1.30e-9	0.00	0.00	10 - 41000
26	C₂H + C₄H₃⁺ → C₆H₃⁺ + H	1.00e-9	0.00	0.00	10 - 41000
27	C₂H + C₅H₂⁺ → C₇H₂⁺ + H	1.20e-9	0.00	0.00	10 - 41000
28	C₂H + C₆H₂⁺ → C₈H₂⁺ + H	1.20e-9	0.00	0.00	10 - 41000
29	C₂H + C₇H₂⁺ → C₉H₂⁺ + H	1.20e-9	0.00	0.00	10 - 41000
30	C₂H + CH₂CCH⁺ → C₅H₂⁺ + H₂	7.50e-10	0.00	0.00	10 - 41000
31	C₂H + CH₂CCH⁺ → C₅H₃⁺ + H	7.50e-10	0.00	0.00	10 - 41000
32	C₂H + CO⁺ → HCO⁺ + C₂	3.90e-10	0.00	0.00	10 - 41000
33	C₂H + H₂CO⁺ → HCO + C₂H₂⁺	7.70e-10	0.00	0.00	10 - 41000
34	C₂H + HCN⁺ → C₂H₂⁺ + CN	7.90e-10	0.00	0.00	10 - 41000
35	C₂H + HCO⁺ → CO + C₂H₂⁺	7.80e-10	0.00	0.00	10 - 41000
36	C₂H + HNO⁺ → NO + C₂H₂⁺	7.70e-10	0.00	0.00	10 - 41000
37	C₂H + HN₂⁺ → N₂ + C₂H₂⁺	7.80e-10	0.00	0.00	10 - 41000
38	C₂H + O₂H⁺ → O₂ + C₂H₂⁺	7.60e-10	0.00	0.00	10 - 41000
39	C₂H + S⁺ → C₂S⁺ + H	1.00e-9	0.00	0.00	10 - 41000
40	C₂H + Si⁺ → SiC₂⁺ + H	1.00e-9	0.00	0.00	10 - 41000
41	CH⁺ + C₂H → C₃⁺ + H₂	9.80e-10	0.00	0.00	10 - 41000
42	CH₂⁺ + C₂H → C₃H₂⁺ + H	9.50e-10	0.00	0.00	10 - 41000
43	CH₃⁺ + C₂H → C₃H₂⁺ + H₂	5.00e-10	0.00	0.00	10 - 41000
44	CH₃⁺ + C₂H → CH₂CCH⁺ + H	5.00e-10	0.00	0.00	10 - 41000
45	CH₅⁺ + C₂H → C₂H₂⁺ + CH₄	9.00e-10	0.00	0.00	10 - 41000
46	H⁺ + C₂H → C₂⁺ + H₂	1.50e-9	0.00	0.00	10 - 41000
47	H₂⁺ + C₂H → C₂H₂⁺ + H	1.00e-9	0.00	0.00	10 - 41000
48	H₂O⁺ + C₂H → C₂H₂⁺ + OH	4.40e-10	0.00	0.00	10 - 41000
49	H₃⁺ + C₂H → C₂H₂⁺ + H₂	1.70e-9	0.00	0.00	10 - 41000
50	He⁺ + C₂H → C₂⁺ + He + H	5.10e-10	0.00	0.00	10 - 41000
51	He⁺ + C₂H → CH⁺ + C + He	5.10e-10	0.00	0.00	10 - 41000
52	He⁺ + C₂H → CH + C⁺ + He	5.10e-10	0.00	0.00	10 - 41000
53	NH⁺ + C₂H → C₂H₂⁺ + N	1.40e-9	0.00	0.00	10 - 41000
54	NH₂⁺ + C₂H → C₂H₂⁺ + NH	9.10e-10	0.00	0.00	10 - 41000
55	O⁺ + C₂H → CO⁺ + CH	4.60e-10	0.00	0.00	10 - 41000
56	OH⁺ + C₂H → C₂H₂⁺ + O	4.50e-10	0.00	0.00	10 - 41000
57	C₂H + C₂H₂ → HC₄H + H	9.39e-11	-0.20	-4.10	15 - 2000
58	C₂H + C₃H₂ → C₅H₂ + H	1.06e-10	-0.25	0.00	10 - 300
59	C₂H + C₅H₂ → C₇H₂ + H	1.06e-10	-0.25	0.00	10 - 300
60	C₂H + C₆H₂ → C₈H₂ + H	1.06e-10	-0.25	0.00	10 - 300
61	C₂H + C₇H₂ → C₉H₂ + H	1.06e-10	-0.25	0.00	10 - 300
62	C₂H + C₈H₂ → C₁₀H₂ + H	1.00e-10	0.00	0.00	10 - 41000
63	C₂H + CH₂CCH₂ → CH₃C₄H + H	3.09e-10	0.00	0.00	10 - 100
64	C₂H + CH₂CCH₂ → CH₃C₄H + H	2.00e-10	-0.40	0.00	101 - 300
65	C₂H + CH₃CCH → CH₃C₄H + H	2.92e-10	0.00	0.00	10 - 100
66	C₂H + CH₃CCH → CH₃C₄H + H	2.10e-10	-0.30	0.00	101 - 300
67	C₂H + CH₃CHCH₂ → CH₃CCH + C₂H₃	1.42e-10	-1.24	57.60	15 - 295
68	C₂H + CS → C₃S + H	1.70e-11	0.00	0.00	10 - 300
69	C₂H + HC₄H → C₆H₂ + H	1.06e-10	-0.25	0.00	10 - 300
70	C₂H + HCN → HC₃N + H	5.30e-12	0.00	770.00	297 - 360
71	C₂H + HNC → HC₃N + H	2.50e-10	-0.20	0.00	10 - 300
72	C₂H + NCCN → HC₃N + CN	2.00e-13	0.00	0.00	10 - 300
73	C₂H + O₂ → HCO + CO	3.67e-11	-0.35	0.00	10 - 1500
74	C₂H + OCS → CO + C₂S + H	1.00e-10	0.00	0.00	10 - 300
75	C₂H + S → C₂S + H	1.70e-11	0.00	0.00	10 - 300
76	C + C₂H → C₃ + H	1.00e-10	0.00	0.00	10 - 300
77	H₂ + C₂H → C₂H₂ + H	9.11e-13	2.57	130.00	220 - 2200
78	N + C₂H → C₂N + H	1.70e-11	0.00	0.00	10 - 300
79	O + C₂H → CO + CH	1.00e-10	0.00	0.00	10 - 2500
80	C₂H + PHOTON → C₂ + H	5.20e-10	0.00	2.30	10 - 41000
81	C₂H + PHOTON → C₂H⁺ + e^-	1.00e-11	0.00	2.00	10 - 41000
82	C₂H + CN → HC₃N + PHOTON	1.00e-16	0.00	0.00	10 - 300
83	C₂H + e^- → C₂H^- + PHOTON	2.00e-15	-0.50	0.00	10 - 41000

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

C2H

C₂H