HC₄H

HCCCCH, Diacetylene
Flags: Detected, RATE12
Empirical: C₄H₂
Mass: 50 amu
Dipole moment: 4.5 D
Heat of formation: 440 kJ mol^-1
Added to system: 2003-05-06 06:43:21

Reactions: Formation | Destruction

42 HC₄H formation reactions

	Reaction	α	β	γ	T_l - T_u (K)
1	H + C₄H^- → HC₄H + e^-	8.30e-10	0.00	0.00	10 - 300
2	NO + C₄H₂⁺ → NO⁺ + HC₄H	3.80e-10	0.00	0.00	10 - 41000
3	C₄H₃⁺ + e^- → HC₄H + H	3.10e-7	-0.50	0.00	10 - 300
4	C₄H₅⁺ + e^- → HC₄H + H₂ + H	1.50e-7	-0.50	0.00	10 - 300
5	C₄H₇⁺ + e^- → HC₄H + H₂ + H₂ + H	3.00e-7	-0.50	0.00	10 - 300
6	CH₃OH + C₄H₃⁺ → CH₃OH₂⁺ + HC₄H	3.00e-10	-0.50	0.00	10 - 41000
7	O + C₅H₃⁺ → HC₄H + HCO⁺	2.00e-10	0.00	0.00	10 - 41000
8	C^- + C₄H₂⁺ → C + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
9	C₁₀^- + C₄H₂⁺ → C₁₀ + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
10	C₁₀H^- + C₄H₂⁺ → C₁₀H + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
11	C₂^- + C₄H₂⁺ → C₂ + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
12	C₂H^- + C₄H₂⁺ → C₂H + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
13	C₃^- + C₄H₂⁺ → C₃ + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
14	C₃H^- + C₄H₂⁺ → C₃H + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
15	C₃N^- + C₄H₂⁺ → C₃N + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
16	C₄^- + C₄H₂⁺ → C₄ + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
17	C₄H^- + C₄H₂⁺ → C₄H + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
18	C₅^- + C₄H₂⁺ → C₅ + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
19	C₅H^- + C₄H₂⁺ → C₅H + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
20	C₅N^- + C₄H₂⁺ → C₅N + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
21	C₆^- + C₄H₂⁺ → C₆ + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
22	C₆H^- + C₄H₂⁺ → C₆H + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
23	C₇^- + C₄H₂⁺ → C₇ + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
24	C₇H^- + C₄H₂⁺ → C₇H + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
25	C₈^- + C₄H₂⁺ → C₈ + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
26	C₈H^- + C₄H₂⁺ → C₈H + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
27	C₉^- + C₄H₂⁺ → C₉ + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
28	C₉H^- + C₄H₂⁺ → C₉H + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
29	CH^- + C₄H₂⁺ → CH + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
30	CN^- + C₄H₂⁺ → CN + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
31	H^- + C₄H₂⁺ → H + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
32	O^- + C₄H₂⁺ → O + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
33	O₂^- + C₄H₂⁺ → O₂ + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
34	OH^- + C₄H₂⁺ → OH + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
35	S^- + C₄H₂⁺ → S + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
36	C₂H + C₂H₂ → HC₄H + H	9.39e-11	-0.20	-4.10	15 - 2000
37	C + CH₂CCH → HC₄H + H	1.00e-10	0.00	0.00	10 - 300
38	C + CH₃CCH → HC₄H + H₂	4.20e-11	-0.11	0.00	10 - 300
39	CH₃CH₃ + C₄H → HC₄H + C₂H₅	2.87e-11	-1.23	24.80	39 - 300
40	CH₄ + C₄H → HC₄H + CH₃	3.69e-13	2.83	103.20	1000 - 3000
41	CH₄ + C₄H → HC₄H + CH₃	2.02e-11	0.00	700.00	10 - 999
42	C₄H₃ + PHOTON → HC₄H + H	1.00e-9	0.00	1.70	10 - 41000

	Reaction	α	β	γ	T_l - T_u (K)
1	C⁺ + HC₄H → C₄H₂⁺ + C	1.31e-9	0.00	0.00	10 - 300
2	C₂H₂⁺ + HC₄H → C₄H₂⁺ + C₂H₂	1.26e-9	0.00	0.00	10 - 300
3	H⁺ + HC₄H → C₄H₂⁺ + H	2.00e-9	0.00	0.00	10 - 41000
4	HC₄H + HC₃N⁺ → C₄H₂⁺ + HC₃N	8.90e-10	0.00	0.00	10 - 41000
5	S⁺ + HC₄H → C₄H₂⁺ + S	7.20e-10	0.00	0.00	10 - 41000
6	HC₄H + CRPHOT → C₂H + C₂H	1.30e-17	0.00	865.00	10 - 41000
7	HC₄H + CRPHOT → C₄H₂⁺ + e^-	1.30e-17	0.00	559.50	10 - 41000
8	HC₄H + CRPHOT → C₄H + H	1.30e-17	0.00	865.00	10 - 41000
9	C⁺ + HC₄H → C₃H⁺ + C₂H	1.45e-10	0.00	0.00	10 - 41000
10	C⁺ + HC₄H → C₅H⁺ + H	1.45e-9	0.00	0.00	10 - 41000
11	C₂H₂⁺ + HC₄H → C₆H₂⁺ + H₂	1.00e-17	0.00	0.00	10 - 41000
12	C₂H₂⁺ + HC₄H → C₆H₃⁺ + H	1.40e-10	0.00	0.00	10 - 41000
13	C₂H₃⁺ + HC₄H → C₄H₃⁺ + C₂H₂	3.00e-10	0.00	0.00	10 - 41000
14	C₂H₃⁺ + HC₄H → C₆H₃⁺ + H₂	3.00e-10	0.00	0.00	10 - 41000
15	C₂H₃⁺ + HC₄H → C₆H₄⁺ + H	3.00e-10	0.00	0.00	10 - 41000
16	C₂H₄⁺ + HC₄H → C₅H₃⁺ + CH₃	5.00e-10	0.00	0.00	10 - 41000
17	C₂H₄⁺ + HC₄H → C₆H₄⁺ + H₂	5.00e-10	0.00	0.00	10 - 41000
18	C₃H⁺ + HC₄H → C₅H⁺ + C₂H₂	1.20e-10	0.00	0.00	10 - 41000
19	C₃H⁺ + HC₄H → C₅H₂⁺ + C₂H	1.00e-9	0.00	0.00	10 - 41000
20	C₃H₂⁺ + HC₄H → C₇H₂⁺ + H₂	3.00e-10	0.00	0.00	10 - 41000
21	C₃H₂⁺ + HC₄H → C₇H₃⁺ + H	3.00e-10	0.00	0.00	10 - 41000
22	C₃H₃⁺ + HC₄H → C₅H₃⁺ + C₂H₂	1.06e-9	0.00	0.00	10 - 41000
23	C₄H⁺ + HC₄H → C₈H₂⁺ + H	1.50e-9	0.00	0.00	10 - 41000
24	C₄H₂⁺ + HC₄H → C₆H₂⁺ + C₂H₂	1.30e-10	0.00	0.00	10 - 41000
25	C₄H₂⁺ + HC₄H → C₈H₃⁺ + H	1.00e-9	0.00	0.00	10 - 41000
26	CH₂CCH⁺ + HC₄H → C₅H₃⁺ + C₂H₂	1.06e-9	0.00	0.00	10 - 41000
27	CH₃⁺ + HC₄H → C₅H₃⁺ + H₂	1.30e-10	0.00	0.00	10 - 41000
28	CH₃⁺ + HC₄H → CH₂CCH⁺ + C₂H₂	1.27e-9	0.00	0.00	10 - 41000
29	H⁺ + HC₄H → C₄H⁺ + H₂	2.00e-9	0.00	0.00	10 - 41000
30	H₃⁺ + HC₄H → C₄H₃⁺ + H₂	2.60e-9	0.00	0.00	10 - 41000
31	H₃CO⁺ + HC₄H → C₄H₃⁺ + H₂CO	9.30e-10	0.00	0.00	10 - 41000
32	H₃O⁺ + HC₄H → C₄H₃⁺ + H₂O	1.10e-9	0.00	0.00	10 - 41000
33	HC₄H + C₄H₃⁺ → C₆H₃⁺ + C₂H₂	1.00e-10	0.00	0.00	10 - 41000
34	HC₄H + C₄H₄⁺ → C₆H₄⁺ + C₂H₂	7.00e-10	0.00	0.00	10 - 41000
35	HC₄H + C₅H₂⁺ → C₇H₃⁺ + C₂H	6.00e-10	0.00	0.00	10 - 41000
36	HCO⁺ + HC₄H → C₄H₃⁺ + CO	1.40e-9	0.00	0.00	10 - 41000
37	He⁺ + HC₄H → C₂H⁺ + C₂H + He	1.00e-9	0.00	0.00	10 - 41000
38	He⁺ + HC₄H → C₄⁺ + He + H₂	1.00e-9	0.00	0.00	10 - 41000
39	He⁺ + HC₄H → C₄H⁺ + He + H	1.00e-9	0.00	0.00	10 - 41000
40	S⁺ + HC₄H → C₄H⁺ + HS	1.60e-10	0.00	0.00	10 - 41000
41	S⁺ + HC₄H → CS + C₃H₂⁺	2.40e-10	0.00	0.00	10 - 41000
42	S⁺ + HC₄H → HC₄S⁺ + H	4.80e-10	0.00	0.00	10 - 41000
43	Si⁺ + HC₄H → C₄H⁺ + SiH	1.60e-9	0.00	0.00	10 - 41000
44	C₂ + HC₄H → C₆H + H	4.10e-10	0.00	0.00	10 - 1000
45	C₂H + HC₄H → C₆H₂ + H	1.06e-10	-0.25	0.00	10 - 300
46	C + HC₄H → C₅H + H	6.50e-10	0.00	0.00	10 - 300
47	CN + HC₄H → HC₅N + H	2.72e-10	-0.52	19.00	10 - 300
48	HC₄H + PHOTON → C₂H + C₂H	1.90e-9	0.00	1.60	10 - 41000
49	HC₄H + PHOTON → C₄H₂⁺ + e^-	4.60e-10	0.00	2.30	10 - 41000
50	HC₄H + PHOTON → C₄H + H	1.90e-9	0.00	1.60	10 - 41000
51	C₃H₃⁺ + HC₄H → C₇H₅⁺ + PHOTON	1.00e-13	-2.50	0.00	10 - 300
52	C₄H₂⁺ + HC₄H → C₈H₄⁺ + PHOTON	1.00e-13	-2.00	0.00	10 - 300
53	CH₂CCH⁺ + HC₄H → C₇H₅⁺ + PHOTON	1.00e-13	-2.50	0.00	10 - 300
54	HC₄H + C₄H₃⁺ → C₈H₅⁺ + PHOTON	1.00e-13	-2.50	0.00	10 - 300
55	HC₄H + C₅H⁺ → C₉H₃⁺ + PHOTON	1.00e-13	-2.00	0.00	10 - 300
56	HC₄H + C₅H₂⁺ → C₉H₄⁺ + PHOTON	1.00e-13	-2.00	0.00	10 - 300
57	HC₄H + C₅H₃⁺ → C₉H₅⁺ + PHOTON	1.00e-13	-2.50	0.00	10 - 300

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

HC4H

HC₄H