CH₂

Methylene radical
Flags: Detected, RATE12
Empirical: CH₂
Mass: 14 amu
Dipole moment: 0.570 D
Heat of formation: 390.0 kJ mol^-1
Added to system: 2003-04-28 18:00:51

Reactions: Formation | Destruction

71 CH₂ formation reactions

	Reaction	α	β	γ	T_l - T_u (K)
1	H^- + CH → CH₂ + e^-	1.00e-10	0.00	0.00	10 - 41000
2	H₂ + C^- → CH₂ + e^-	1.00e-13	0.00	0.00	10 - 41000
3	H + CH^- → CH₂ + e^-	1.00e-10	0.00	0.00	10 - 300
4	CH₂⁺ + NO → NO⁺ + CH₂	4.20e-10	0.00	0.00	10 - 41000
5	CH₂CN + CRPHOT → CH₂ + CN	1.30e-17	0.00	2500.00	10 - 41000
6	H₂CCO + CRPHOT → CO + CH₂	1.30e-17	0.00	456.50	10 - 41000
7	CH₂NH + CRPHOT → NH + CH₂	1.30e-17	0.00	500.00	10 - 41000
8	CH₃ + CRPHOT → CH₂ + H	1.30e-17	0.00	250.00	10 - 41000
9	CH₃CHCH₂ + CRPHOT → C₂H₄ + CH₂	1.30e-17	0.00	750.00	10 - 41000
10	CH₄ + CRPHOT → CH₂ + H₂	1.30e-17	0.00	1169.50	10 - 41000
11	C₂H₃⁺ + e^- → CH₂ + CH	1.50e-8	-0.84	0.00	50 - 1000
12	C₂H₃⁺ + e^- → CH₂ + CH	2.87e-8	-1.38	0.00	1000 - 30000
13	C₂H₄⁺ + e^- → CH₂ + CH₂	2.24e-8	-0.76	0.00	10 - 300
14	C₂H₄⁺ + e^- → CH₂ + CH₂	2.24e-8	-0.76	0.00	10 - 300
15	C₂H₅⁺ + e^- → CH₃ + CH₂	4.76e-8	-0.79	0.00	10 - 300
16	C₃H₂⁺ + e^- → C₂ + CH₂	3.00e-8	-0.50	0.00	10 - 300
17	C₃H₇⁺ + e^- → C₂H₄ + CH₂ + H	9.20e-9	-0.73	0.00	10 - 300
18	CH₂CN⁺ + e^- → CN + CH₂	1.50e-7	-0.50	0.00	10 - 300
19	CH₂CO⁺ + e^- → CO + CH₂	2.00e-7	-0.50	0.00	10 - 300
20	CH₂NH₂⁺ + e^- → NH₂ + CH₂	1.50e-7	-0.50	0.00	10 - 300
21	CH₃⁺ + e^- → CH₂ + H	7.75e-8	-0.50	0.00	10 - 300
22	CH₃C₃N⁺ + e^- → HC₃N + CH₂	3.00e-7	-0.50	0.00	10 - 300
23	CH₃CHOH⁺ + e^- → CH₂ + H₂CO + H	8.47e-7	-0.74	0.00	10 - 1000
24	CH₃CN⁺ + e^- → HCN + CH₂	1.50e-7	-0.50	0.00	10 - 300
25	CH₃COCH₃⁺ + e^- → CH₃CHO + CH₂	1.50e-7	-0.50	0.00	10 - 300
26	CH₃OCH₃⁺ + e^- → CH₃OH + CH₂	1.50e-7	-0.50	0.00	10 - 300
27	CH₃OH₂⁺ + e^- → CH₂ + H₂O + H	1.87e-7	-0.59	0.00	10 - 300
28	CH₄⁺ + e^- → CH₂ + H + H	1.75e-7	-0.50	0.00	10 - 300
29	CH₅⁺ + e^- → CH₂ + H₂ + H	4.76e-8	-0.52	0.00	10 - 300
30	H₂CNO⁺ + e^- → CH₂ + NO	1.50e-7	-0.50	0.00	10 - 300
31	H₂CO⁺ + e^- → CH₂ + O	2.50e-8	-0.70	0.00	10 - 1000
32	H₃CO⁺ + e^- → CH₂ + OH	4.20e-8	-0.78	0.00	10 - 1000
33	SiCH₂⁺ + e^- → Si + CH₂	2.00e-7	-0.50	0.00	10 - 300
34	C⁺ + CH₃CH₃ → C₂H₄⁺ + CH₂	1.16e-10	0.00	0.00	10 - 41000
35	C₂H₂⁺ + C₂H₃ → CH₂CCH⁺ + CH₂	3.30e-10	-0.50	0.00	10 - 41000
36	C₂H + C₂H₄⁺ → CH₂CCH⁺ + CH₂	5.00e-10	0.00	0.00	10 - 41000
37	CH⁺ + CH₃OH → H₃CO⁺ + CH₂	2.90e-10	-0.50	0.00	10 - 41000
38	CH⁺ + H₂CO → HCO⁺ + CH₂	9.60e-10	-0.50	0.00	10 - 41000
39	CH₃⁺ + CH₃COCH₃ → CH₃COCH₄⁺ + CH₂	2.40e-10	-0.50	0.00	10 - 41000
40	CH₃⁺ + NH₃ → NH₄⁺ + CH₂	3.04e-10	-0.50	0.00	10 - 41000
41	CH₄ + C₂⁺ → C₂H₂⁺ + CH₂	1.82e-10	0.00	0.00	10 - 41000
42	CH₄ + OH⁺ → H₃O⁺ + CH₂	1.31e-9	0.00	0.00	10 - 41000
43	H⁺ + CH₂NH → NH₂⁺ + CH₂	1.00e-9	-0.50	0.00	10 - 41000
44	He⁺ + C₂H₄ → CH₂⁺ + CH₂ + He	4.80e-10	0.00	0.00	10 - 41000
45	He⁺ + H₂CCO → CO⁺ + CH₂ + He	1.00e-9	-0.50	0.00	10 - 41000
46	He⁺ + CH₂PH → PH⁺ + CH₂ + He	5.00e-10	0.00	0.00	10 - 41000
47	He⁺ + H₂CS → S⁺ + CH₂ + He	8.10e-10	-0.50	0.00	10 - 41000
48	He⁺ + SiCH₃ → SiH⁺ + CH₂ + He	1.00e-9	0.00	0.00	10 - 41000
49	N⁺ + H₂CO → NO⁺ + CH₂	2.90e-10	-0.50	0.00	10 - 41000
50	O + CH₅⁺ → H₃O⁺ + CH₂	2.20e-10	0.00	0.00	10 - 41000
51	CH₃ + CH₃ → CH₄ + CH₂	7.13e-12	0.00	5052.00	1950 - 2300
52	CH₃ + CN → HCN + CH₂	9.21e-12	0.70	1500.00	50 - 300
53	CH₃ + O₂ → O₂H + CH₂	5.30e-12	0.00	34975.00	1165 - 41000
54	CH₃ + OH → H₂O + CH₂	1.20e-10	0.00	1400.00	300 - 1000
55	CH + H₂CO → HCO + CH₂	9.21e-12	0.70	2000.00	66 - 300
56	CH + HCO → CO + CH₂	2.87e-12	0.70	500.00	16 - 300
57	CH + HNO → NO + CH₂	1.73e-11	0.00	0.00	10 - 300
58	CH + O₂H → O₂ + CH₂	2.94e-13	0.50	7550.00	251 - 300
59	H₂ + CH → CH₂ + H	5.46e-10	0.00	1943.00	300 - 2500
60	H + CH₃ → CH₂ + H₂	1.00e-10	0.00	7600.00	300 - 2500
61	H + HCO → O + CH₂	6.61e-11	0.00	51598.00	1200 - 1812
62	O + C₂H₂ → CO + CH₂	1.15e-12	1.40	1110.00	200 - 2500
63	O + C₂H₄ → H₂CO + CH₂	4.20e-11	0.00	2520.00	226 - 2500
64	O + CH₂CCH₂ → CH₂ + CH₂CO	1.27e-11	-0.09	798.70	200 - 1000
65	CH₂CN + PHOTON → CH₂ + CN	1.56e-9	0.00	1.90	10 - 41000
66	H₂CCO + PHOTON → CO + CH₂	1.40e-9	0.00	2.70	10 - 41000
67	CH₂PH + PHOTON → CH₂ + PH	9.54e-10	0.00	1.80	10 - 41000
68	CH₃ + PHOTON → CH₂ + H	1.35e-10	0.00	2.30	10 - 41000
69	CH₃CHCH₂ + PHOTON → C₂H₄ + CH₂	1.13e-9	0.00	1.60	10 - 41000
70	CH₄ + PHOTON → CH₂ + H₂	9.80e-10	0.00	2.60	10 - 41000
71	H₂ + C → CH₂ + PHOTON	1.00e-17	0.00	0.00	10 - 300

	Reaction	α	β	γ	T_l - T_u (K)
1	C^- + CH₂ → C₂H₂ + e^-	5.00e-10	0.00	0.00	10 - 41000
2	CH₂ + O^- → H₂CO + e^-	5.00e-10	0.00	0.00	10 - 41000
3	H^- + CH₂ → CH₃ + e^-	1.00e-9	0.00	0.00	10 - 41000
4	C⁺ + CH₂ → CH₂⁺ + C	5.20e-10	0.00	0.00	10 - 41000
5	CH₂ + C₂⁺ → C₂ + CH₂⁺	4.50e-10	0.00	0.00	10 - 41000
6	CH₂ + CN⁺ → CN + CH₂⁺	8.80e-10	0.00	0.00	10 - 41000
7	CH₂ + CO⁺ → CO + CH₂⁺	4.30e-10	0.00	0.00	10 - 41000
8	CH₂ + H₂CO⁺ → H₂CO + CH₂⁺	4.30e-10	0.00	0.00	10 - 41000
9	CH₂ + H₂O⁺ → H₂O + CH₂⁺	4.70e-10	0.00	0.00	10 - 41000
10	CH₂ + N₂⁺ → N₂ + CH₂⁺	8.70e-10	0.00	0.00	10 - 41000
11	CH₂ + NH₂⁺ → NH₂ + CH₂⁺	4.90e-10	0.00	0.00	10 - 41000
12	CH₂ + O⁺ → O + CH₂⁺	9.70e-10	0.00	0.00	10 - 41000
13	CH₂ + O₂⁺ → O₂ + CH₂⁺	4.30e-10	0.00	0.00	10 - 41000
14	CH₂ + OH⁺ → OH + CH₂⁺	4.80e-10	0.00	0.00	10 - 41000
15	H⁺ + CH₂ → CH₂⁺ + H	1.40e-9	0.00	0.00	10 - 41000
16	H₂⁺ + CH₂ → CH₂⁺ + H₂	1.00e-9	0.00	0.00	10 - 41000
17	N⁺ + CH₂ → CH₂⁺ + N	1.00e-9	0.00	0.00	10 - 41000
18	CH₂ + CRPHOT → CH₂⁺ + e^-	1.30e-17	0.00	250.00	10 - 41000
19	CH₂ + CRPHOT → CH + H	1.30e-17	0.00	250.00	10 - 41000
20	C⁺ + CH₂ → C₂H⁺ + H	5.20e-10	0.00	0.00	10 - 41000
21	CH⁺ + CH₂ → C₂H⁺ + H₂	1.00e-9	0.00	0.00	10 - 41000
22	CH₂ + C₂⁺ → C₃H⁺ + H	4.50e-10	0.00	0.00	10 - 41000
23	CH₂ + C₂H⁺ → C₂ + CH₃⁺	4.40e-10	0.00	0.00	10 - 41000
24	CH₂ + C₂H⁺ → C₃H₂⁺ + H	4.40e-10	0.00	0.00	10 - 41000
25	CH₂ + C₂H₂⁺ → CH₂CCH⁺ + H	8.80e-10	0.00	0.00	10 - 41000
26	CH₂ + CH₃⁺ → C₂H₃⁺ + H₂	9.90e-10	0.00	0.00	10 - 41000
27	CH₂ + CH₅⁺ → CH₄ + CH₃⁺	9.60e-10	0.00	0.00	10 - 41000
28	CH₂ + CO⁺ → HCO⁺ + CH	4.30e-10	0.00	0.00	10 - 41000
29	CH₂ + H₂CO⁺ → HCO + CH₃⁺	4.30e-10	0.00	0.00	10 - 41000
30	CH₂ + H₂O⁺ → OH + CH₃⁺	4.70e-10	0.00	0.00	10 - 41000
31	CH₂ + H₃O⁺ → H₂O + CH₃⁺	9.40e-10	0.00	0.00	10 - 41000
32	CH₂ + HCN⁺ → CN + CH₃⁺	8.70e-10	0.00	0.00	10 - 41000
33	CH₂ + HCNH⁺ → HCN + CH₃⁺	4.35e-10	0.00	0.00	10 - 41000
34	CH₂ + HCNH⁺ → HNC + CH₃⁺	4.35e-10	0.00	0.00	10 - 41000
35	CH₂ + HCO⁺ → CO + CH₃⁺	8.60e-10	0.00	0.00	10 - 41000
36	CH₂ + HNO⁺ → NO + CH₃⁺	8.60e-10	0.00	0.00	10 - 41000
37	CH₂ + HN₂⁺ → N₂ + CH₃⁺	8.60e-10	0.00	0.00	10 - 41000
38	CH₂ + NH⁺ → CH₃⁺ + N	1.40e-9	0.00	0.00	10 - 41000
39	CH₂ + NH₂⁺ → CH₃⁺ + NH	4.90e-10	0.00	0.00	10 - 41000
40	CH₂ + NH₃⁺ → NH₂ + CH₃⁺	9.60e-10	0.00	0.00	10 - 41000
41	CH₂ + O₂⁺ → H₂CO⁺ + O	4.30e-10	0.00	0.00	10 - 41000
42	CH₂ + O₂H⁺ → O₂ + CH₃⁺	8.50e-10	0.00	0.00	10 - 41000
43	CH₂ + OH⁺ → O + CH₃⁺	4.80e-10	0.00	0.00	10 - 41000
44	CH₂ + S⁺ → HCS⁺ + H	1.00e-11	0.00	0.00	10 - 41000
45	CH₂ + Si⁺ → HCSi⁺ + H	8.70e-10	0.00	0.00	10 - 41000
46	CH₂ + SiO⁺ → H₂CO + Si⁺	8.20e-10	0.00	0.00	10 - 41000
47	H⁺ + CH₂ → CH⁺ + H₂	1.40e-9	0.00	0.00	10 - 41000
48	H₂⁺ + CH₂ → CH₃⁺ + H	1.00e-9	0.00	0.00	10 - 41000
49	H₃⁺ + CH₂ → CH₃⁺ + H₂	1.70e-9	0.00	0.00	10 - 41000
50	He⁺ + CH₂ → C⁺ + He + H₂	7.50e-10	0.00	0.00	10 - 41000
51	He⁺ + CH₂ → CH⁺ + He + H	7.50e-10	0.00	0.00	10 - 41000
52	C + CH₂ → C₂H + H	1.00e-10	0.00	0.00	10 - 300
53	C + CH₂ → CH + CH	2.69e-12	0.00	23550.00	1000 - 4000
54	CH₂ + C₂H₂ → CH₂CCH + H	2.64e-10	-0.90	0.00	200 - 1000
55	CH₂ + C₂H₄ → CH₃CHCH₂ +	8.00e-10	-2.00	350.00	200 - 1000
56	CH₂ + CH₂ → C₂H₂ + H₂	2.63e-9	0.00	6013.00	1100 - 2720
57	CH₂ + CH₂ → C₂H₂ + H₂	2.63e-9	0.00	6013.00	1100 - 2720
58	CH₂ + CH₂ → C₂H₂ + H + H	1.80e-10	0.00	400.00	300 - 3000
59	CH₂ + CH₂ → C₂H₂ + H + H	1.80e-10	0.00	400.00	300 - 3000
60	CH₂ + CH₂ → C₂H₃ + H	3.32e-11	0.00	0.00	1600 - 2300
61	CH₂ + CH₂ → C₂H₃ + H	3.32e-11	0.00	0.00	1600 - 2300
62	CH₂ + CH₂ → CH₃ + CH	4.00e-10	0.00	5000.00	300 - 2500
63	CH₂ + CH₂ → CH₃ + CH	4.00e-10	0.00	5000.00	300 - 2500
64	CH₂ + CH₄ → CH₃ + CH₃	7.13e-12	0.00	5050.00	296 - 2500
65	CH₂ + CN → HCN + CH	5.30e-12	0.00	2500.00	83 - 300
66	CH₂ + H₂CO → HCO + CH₃	3.30e-13	0.00	3270.00	109 - 300
67	CH₂ + HCO → CO + CH₃	3.00e-11	0.00	0.00	10 - 2500
68	CH₂ + HNO → NO + CH₃	1.70e-11	0.00	0.00	10 - 300
69	CH₂ + N₂ → HCN + NH	8.00e-12	0.00	18000.00	1500 - 2000
70	CH₂ + NO₂ → H₂CO + NO	6.91e-11	0.00	0.00	295 - 295
71	CH₂ + NO → H₂CO + N	2.70e-12	0.00	3500.00	116 - 300
72	CH₂ + NO → HCN + OH	3.65e-12	0.00	0.00	300 - 2000
73	CH₂ + NO → HCNO + H	3.65e-11	0.00	0.00	10 - 300
74	CH₂ + NO → HNCO + H	3.65e-12	0.00	0.00	10 - 300
75	CH₂ + O₂ → CO₂ + H₂	2.92e-11	-3.30	1443.00	1000 - 1828
76	CH₂ + O₂ → CO₂ + H + H	3.65e-11	-3.30	1443.00	1000 - 1828
77	CH₂ + O₂ → CO + H₂O	2.48e-10	-3.30	1443.00	1000 - 1828
78	CH₂ + O₂ → H₂CO + O	3.65e-11	-3.30	1443.00	1000 - 1828
79	CH₂ + O₂ → HCO + OH	4.10e-11	0.00	750.00	300 - 2500
80	CH₂ + O → CO + H₂	8.00e-11	0.00	0.00	1900 - 2600
81	CH₂ + O → CO + H + H	1.33e-10	0.00	0.00	10 - 2500
82	CH₂ + O → HCO + H	5.01e-11	0.00	0.00	1200 - 1812
83	CH₂ + O → OH + CH	4.98e-10	0.00	6000.00	1900 - 2300
84	CH₂ + OH → H₂CO + H	3.00e-11	0.00	0.00	10 - 2500
85	CH₂ + OH → H₂O + CH	1.44e-11	0.50	3000.00	100 - 300
86	CH₂ + OH → O + CH₃	1.44e-11	0.50	3000.00	100 - 300
87	CH₂ + S → CS + H₂	1.00e-10	0.00	0.00	10 - 300
88	CH₂ + S → HCS + H	1.00e-10	0.00	0.00	10 - 300
89	CH₂ + Si → HCSi + H	1.00e-10	0.00	0.00	10 - 300
90	H₂ + CH₂ → CH₃ + H	5.18e-11	0.17	6400.00	300 - 2500
91	H + CH₂ → CH + H₂	2.20e-10	0.00	0.00	10 - 2500
92	N + CH₂ → HCN + H	3.95e-11	0.17	0.00	10 - 300
93	N + CH₂ → HNC + H	3.95e-11	0.17	0.00	10 - 300
94	N + CH₂ → NH + CH	9.96e-13	0.00	20380.00	1000 - 4000
95	CH₂ + PHOTON → CH₂⁺ + e^-	1.00e-9	0.00	2.30	10 - 41000
96	CH₂ + PHOTON → CH + H	5.80e-10	0.00	2.00	10 - 41000

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

CH2

CH₂