C₆H₂

Hexapentaenylidene, H2C6
Flags: Detected, RATE12
Empirical: C₆H₂
Mass: 74 amu
Dipole moment: 6.200 D
Heat of formation: 652.0 kJ mol^-1
Added to system: 2003-04-28 18:00:51

Reactions: Formation | Destruction

14 C₆H₂ formation reactions

	Reaction	α	β	γ	T_l - T_u (K)
1	H + C₆H^- → C₆H₂ + e^-	5.00e-10	0.00	0.00	10 - 300
2	C₆H₆ + CRPHOT → C₆H₂ + H₂ + H + H	1.30e-17	0.00	1500.00	10 - 41000
3	C₆H₃⁺ + e^- → C₆H₂ + H	1.00e-6	-0.30	0.00	10 - 300
4	C₆H₄⁺ + e^- → C₆H₂ + H₂	1.00e-6	-0.30	0.00	10 - 300
5	C₆H₅⁺ + e^- → C₆H₂ + H₂ + H	1.00e-6	-0.30	0.00	10 - 300
6	C₆H₇⁺ + e^- → C₆H₂ + H₂ + H₂ + H	5.00e-7	-0.50	0.00	10 - 1000
7	O + C₇H₃⁺ → C₆H₂ + HCO⁺	2.00e-10	0.00	0.00	10 - 41000
8	C₂H₂ + C₄H → C₆H₂ + H	1.81e-10	-1.06	65.90	39 - 300
9	C₂H₄ + C₄H → C₆H₂ + H₂ + H	1.96e-10	-0.40	-9.40	39 - 300
10	C₂H + HC₄H → C₆H₂ + H	1.06e-10	-0.25	0.00	10 - 300
11	C + CH₃C₄H → C₆H₂ + H₂	6.50e-10	0.00	0.00	10 - 300
12	CH₂CCH₂ + C₄H → C₆H₂ + CH₃	1.84e-10	-1.18	91.10	39 - 300
13	CH₃CCH + C₄H → C₆H₂ + CH₃	1.59e-10	-1.18	91.10	39 - 300
14	CH₃CHCH₂ + C₄H → C₆H₂ + CH₃ + H₂	2.42e-10	-0.84	48.90	39 - 300

	Reaction	α	β	γ	T_l - T_u (K)
1	C₂H₂⁺ + C₆H₂ → C₆H₂⁺ + C₂H₂	5.00e-10	-0.50	0.00	10 - 300
2	H⁺ + C₆H₂ → C₆H₂⁺ + H	2.00e-9	-0.50	0.00	10 - 300
3	C₆H₂ + CRPHOT → C₄H + C₂H	1.30e-17	0.00	875.00	10 - 41000
4	C⁺ + C₆H₂ → C₇⁺ + H₂	1.20e-9	-0.50	0.00	10 - 41000
5	C⁺ + C₆H₂ → C₇H⁺ + H	1.20e-9	-0.50	0.00	10 - 41000
6	C₂H₂⁺ + C₆H₂ → C₈H₂⁺ + H₂	5.00e-10	-0.50	0.00	10 - 41000
7	C₂H₂⁺ + C₆H₂ → C₈H₃⁺ + H	5.00e-10	-0.50	0.00	10 - 41000
8	C₂H₃⁺ + C₆H₂ → C₆H₃⁺ + C₂H₂	3.00e-10	-0.50	0.00	10 - 41000
9	C₂H₃⁺ + C₆H₂ → C₈H₃⁺ + H₂	3.00e-10	-0.50	0.00	10 - 41000
10	C₂H₃⁺ + C₆H₂ → C₈H₄⁺ + H	3.00e-10	-0.50	0.00	10 - 41000
11	C₂H₄⁺ + C₆H₂ → C₇H₃⁺ + CH₃	5.00e-10	-0.50	0.00	10 - 41000
12	C₂H₄⁺ + C₆H₂ → C₈H₄⁺ + H₂	5.00e-10	-0.50	0.00	10 - 41000
13	C₃H₂⁺ + C₆H₂ → C₉H₂⁺ + H₂	3.00e-10	-0.50	0.00	10 - 41000
14	C₃H₂⁺ + C₆H₂ → C₉H₃⁺ + H	3.00e-10	-0.50	0.00	10 - 41000
15	C₃H₃⁺ + C₆H₂ → C₉H₃⁺ + H₂	1.00e-9	-0.50	0.00	10 - 41000
16	CH₂CCH⁺ + C₆H₂ → C₉H₃⁺ + H₂	1.00e-9	-0.50	0.00	10 - 41000
17	CH₃⁺ + C₆H₂ → C₇H₃⁺ + H₂	1.20e-9	-0.50	0.00	10 - 41000
18	H⁺ + C₆H₂ → C₆H⁺ + H₂	2.00e-9	-0.50	0.00	10 - 41000
19	H₃⁺ + C₆H₂ → C₆H₃⁺ + H₂	2.00e-9	-0.50	0.00	10 - 41000
20	HCO⁺ + C₆H₂ → C₆H₃⁺ + CO	1.40e-9	-0.50	0.00	10 - 41000
21	He⁺ + C₆H₂ → C₄H⁺ + C₂H + He	1.00e-9	-0.50	0.00	10 - 41000
22	He⁺ + C₆H₂ → C₆⁺ + He + H₂	1.00e-9	-0.50	0.00	10 - 41000
23	He⁺ + C₆H₂ → C₆H⁺ + He + H	1.00e-9	-0.50	0.00	10 - 41000
24	C₂H + C₆H₂ → C₈H₂ + H	1.06e-10	-0.25	0.00	10 - 300
25	C + C₆H₂ → C₇H + H	7.40e-10	0.00	0.00	10 - 300
26	CN + C₆H₂ → HC₇N + H	2.72e-10	-0.52	19.00	10 - 300
27	C₆H₂ + PHOTON → C₆H₂⁺ + e^-	2.00e-10	0.00	2.50	10 - 41000
28	C₆H₂ + PHOTON → C₆H + H	1.00e-9	0.00	1.70	10 - 41000

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

C6H2

C₆H₂