C₄

Tetracarbon
Flags: RATE12
Empirical: C₄
Mass: 48 amu
Heat of formation: 1052.0 kJ mol^-1
Added to system: 2003-05-06 06:43:21

Reactions: Formation | Destruction

65 C₄ formation reactions

	Reaction	α	β	γ	T_l - T_u (K)
1	C₂^- + C₂ → C₄ + e^-	1.00e-9	0.00	0.00	10 - 300
2	C + C₃^- → C₄ + e^-	1.00e-9	0.00	0.00	10 - 300
3	C₄^- + CRPHOT → C₄ + e^-	1.30e-17	0.00	250.00	10 - 41000
4	C₄H + CRPHOT → C₄ + H	1.30e-17	0.00	2500.00	10 - 41000
5	C₅ + CRPHOT → C₄ + C	1.30e-17	0.00	500.00	10 - 41000
6	C₅N + CRPHOT → C₄ + CN	1.30e-17	0.00	875.00	10 - 41000
7	C₆H + CRPHOT → C₄ + C₂H	1.30e-17	0.00	2500.00	10 - 41000
8	C₁₁⁺ + e^- → C₇ + C₄	2.66e-8	-0.30	0.00	10 - 41000
9	C₄H⁺ + e^- → C₄ + H	3.00e-7	-0.50	0.00	10 - 300
10	C₆⁺ + e^- → C₄ + C₂	1.00e-6	-0.30	0.00	10 - 300
11	C₇⁺ + e^- → C₄ + C₃	3.00e-7	-0.50	0.00	10 - 300
12	C₄H⁺ + C₄H → C₄H₂⁺ + C₄	6.00e-10	-0.50	0.00	10 - 300
13	He⁺ + C₁₀ → C₆⁺ + C₄ + He	2.70e-11	0.00	0.00	10 - 41000
14	N + C₅^- → CN^- + C₄	8.50e-11	0.00	0.00	10 - 41000
15	N + C₇^- → C₃N^- + C₄	2.53e-11	0.00	0.00	10 - 41000
16	N + C₉^- → C₅N^- + C₄	1.50e-11	0.00	0.00	10 - 41000
17	O + C₅H⁺ → C₄ + HCO⁺	2.00e-10	0.00	0.00	10 - 41000
18	C₄^- + C⁺ → C + C₄	7.51e-8	-0.50	0.00	10 - 41000
19	C₄^- + C₂H₂⁺ → C₄ + C₂H₂	7.51e-8	-0.50	0.00	10 - 41000
20	C₄^- + C₂H₃⁺ → C₄ + C₂H₃	7.51e-8	-0.50	0.00	10 - 41000
21	C₄^- + C₄H₂⁺ → C₄ + HC₄H	7.51e-8	-0.50	0.00	10 - 41000
22	C₄^- + C₄H₃⁺ → C₄ + C₄H₃	7.51e-8	-0.50	0.00	10 - 41000
23	C₄^- + C₄S⁺ → C₄ + C₄S	7.51e-8	-0.50	0.00	10 - 41000
24	C₄^- + CH₂CCH⁺ → C₄ + CH₂CCH	7.51e-8	-0.50	0.00	10 - 41000
25	C₄^- + CH₃⁺ → C₄ + CH₃	7.51e-8	-0.50	0.00	10 - 41000
26	C₄^- + CNC⁺ → C₄ + C₂N	7.51e-8	-0.50	0.00	10 - 41000
27	C₄^- + Fe⁺ → C₄ + Fe	7.51e-8	-0.50	0.00	10 - 41000
28	C₄^- + H⁺ → C₄ + H	7.51e-8	-0.50	0.00	10 - 41000
29	C₄^- + H₂CO⁺ → C₄ + H₂CO	7.51e-8	-0.50	0.00	10 - 41000
30	C₄^- + H₂S⁺ → C₄ + H₂S	7.51e-8	-0.50	0.00	10 - 41000
31	C₄^- + H₃⁺ → C₄ + H₂ + H	7.51e-8	-0.50	0.00	10 - 41000
32	C₄^- + H₃O⁺ → C₄ + H + H₂O	7.51e-8	-0.50	0.00	10 - 41000
33	C₄^- + HC₂S⁺ → C₄ + C₂S + H	7.51e-8	-0.50	0.00	10 - 41000
34	C₄^- + HCNH⁺ → C₄ + HCN + H	3.76e-8	-0.50	0.00	10 - 41000
35	C₄^- + HCNH⁺ → C₄ + HNC + H	3.76e-8	-0.50	0.00	10 - 41000
36	C₄^- + HCO⁺ → C₄ + H + CO	3.76e-8	-0.50	0.00	10 - 41000
37	C₄^- + HCO⁺ → C₄ + HCO	3.76e-8	-0.50	0.00	10 - 41000
38	C₄^- + He⁺ → C₄ + He	7.51e-8	-0.50	0.00	10 - 41000
39	C₄^- + Mg⁺ → C₄ + Mg	7.51e-8	-0.50	0.00	10 - 41000
40	C₄^- + N⁺ → C₄ + N	7.51e-8	-0.50	0.00	10 - 41000
41	C₄^- + N₂H⁺ → C₄ + N₂ + H	7.51e-8	-0.50	0.00	10 - 41000
42	C₄^- + NH₃⁺ → C₄ + NH₃	7.51e-8	-0.50	0.00	10 - 41000
43	C₄^- + NH₄⁺ → C₄ + NH₃ + H	7.51e-8	-0.50	0.00	10 - 41000
44	C₄^- + NO⁺ → C₄ + NO	7.51e-8	-0.50	0.00	10 - 41000
45	C₄^- + Na⁺ → C₄ + Na	7.51e-8	-0.50	0.00	10 - 41000
46	C₄^- + O⁺ → C₄ + O	7.51e-8	-0.50	0.00	10 - 41000
47	C₄^- + S⁺ → C₄ + S	7.51e-8	-0.50	0.00	10 - 41000
48	C₄^- + SO⁺ → C₄ + SO	7.51e-8	-0.50	0.00	10 - 41000
49	C₄^- + Si⁺ → C₄ + Si	7.51e-8	-0.50	0.00	10 - 41000
50	C₄^- + SiO⁺ → C₄ + SiO	7.51e-8	-0.50	0.00	10 - 41000
51	C₄^- + SiOH⁺ → C₄ + SiO + H	7.51e-8	-0.50	0.00	10 - 41000
52	C₄^- + SiS⁺ → C₄ + SiS	7.51e-8	-0.50	0.00	10 - 41000
53	C + C₃H → C₄ + H	1.00e-10	0.00	0.00	10 - 300
54	C + C₆ → C₃ + C₄	5.00e-11	0.00	0.00	10 - 300
55	N + C₅ → CN + C₄	1.00e-13	0.00	0.00	10 - 300
56	O + C₅ → C₄ + CO	5.00e-12	0.00	900.00	10 - 300
57	C₁₀ + PHOTON → C₆ + C₄	9.47e-12	0.00	3.90	10 - 41000
58	C₁₁ + PHOTON → C₇ + C₄	2.31e-11	0.00	3.30	10 - 41000
59	C₄^- + PHOTON → C₄ + e^-	2.20e-9	0.00	2.00	10 - 41000
60	C₄H + PHOTON → C₄ + H	1.85e-9	0.00	2.00	10 - 41000
61	C₄N + PHOTON → C₄ + N	1.00e-9	0.00	1.70	10 - 41000
62	C₅N + PHOTON → C₄ + CN	5.00e-10	0.00	1.70	10 - 41000
63	C₆H + PHOTON → C₄ + C₂H	5.00e-12	0.00	1.70	10 - 41000
64	SiC₄ + PHOTON → Si + C₄	1.00e-10	0.00	2.30	10 - 41000
65	C + C₃ → C₄ + PHOTON	4.00e-14	-1.00	0.00	10 - 300

	Reaction	α	β	γ	T_l - T_u (K)
1	C₂^- + C₄ → C₆ + e^-	1.00e-9	0.00	0.00	10 - 300
2	C₃^- + C₄ → C₇ + e^-	1.00e-9	0.00	0.00	10 - 300
3	C₄^- + C₄ → C₈ + e^-	1.00e-9	0.00	0.00	10 - 300
4	C₅^- + C₄ → C₉ + e^-	1.00e-9	0.00	0.00	10 - 300
5	C₆^- + C₄ → C₁₀ + e^-	1.00e-9	0.00	0.00	10 - 300
6	H⁺ + C₄ → C₄⁺ + H	4.00e-9	0.00	0.00	10 - 41000
7	C₄ + CRPHOT → C₂ + C₂	1.30e-17	0.00	500.00	10 - 41000
8	C₄ + CRPHOT → C₃ + C	1.30e-17	0.00	500.00	10 - 41000
9	H₃⁺ + C₄ → C₄H⁺ + H₂	2.00e-9	0.00	0.00	10 - 41000
10	H₃O⁺ + C₄ → C₄H⁺ + H₂O	1.10e-9	0.00	0.00	10 - 41000
11	HCO⁺ + C₄ → C₄H⁺ + CO	2.00e-9	0.00	0.00	10 - 41000
12	He⁺ + C₄ → C₂⁺ + C₂ + He	6.70e-10	0.00	0.00	10 - 41000
13	He⁺ + C₄ → C₃⁺ + C + He	6.70e-10	0.00	0.00	10 - 41000
14	He⁺ + C₄ → C₃ + C⁺ + He	6.70e-10	0.00	0.00	10 - 41000
15	C + C₄ → C₂ + C₃	9.00e-11	0.00	0.00	10 - 300
16	N + C₄ → C₃ + CN	1.00e-10	0.00	0.00	10 - 300
17	O + C₄ → C₃ + CO	1.00e-10	0.00	0.00	10 - 300
18	C₄ + PHOTON → C₂ + C₂	4.25e-9	0.00	1.90	10 - 41000
19	C₄ + PHOTON → C₃ + C	4.25e-9	0.00	1.90	10 - 41000
20	C⁺ + C₄ → C₅⁺ + PHOTON	1.00e-9	0.00	0.00	10 - 300
21	C₄ + e^- → C₄^- + PHOTON	1.10e-8	-0.50	0.00	10 - 300

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

C4

C₄