Chemical modeling of aminoketene, ethanolamine, and glycine production in interstellar ices

Open Access

Table 3

Selection of grain-surface and ice-mantle reactions added to the MAGICKAL chemical network.

Reaction								E_A(K)
1a	C	+	NH₃	→	CHNH₂			0
1b	C	+	NH₃	→	CH₂NH			0
2	CHNH₂	+	CO	→	NH₂CHCO			0
3a	H	+	NH₂CHCO	→	NH₂CH₂CO			61
3b	H	+	NH₂CHCO	→	NH₂CHCHO			750
4	H	+	NH₂CH₂CO	→	NH₂CH₂CHO			0
5a	H	+	NH₂CHCHO	→	NH₂CH₂CHO			0
5b	H	+	NH₂CHCHO	→	NH₂CHCO	+	H₂	545
6a	H	+	NH₂CH₂CHO	→	NH₂CH₂CH₂O			1 717
6b	H	+	NH₂CH₂CHO	→	NH₂CH₂CHOH			2 612
6c	H	+	NH₂CH₂CHO	→	NH₂CH₂CO	+	H₂	895
6d	H	+	NH₂CH₂CHO	→	NH₂CHCHO	+	H₂	625
7a	H	+	NH₂CH₂CH₂O	→	NH₂CH₂CH₂OH			0
7b	H	+	NH₂CH₂CH₂O	→	NH₂CH₂CHO	+	H₂	0
8	H	+	NH₂CH₂CHOH	→	NH₂CH₂CH₂OH			0
9a	H	+	NH₂CH₂CH₂OH	→	NH₂CH₂CH₂	+	H₂O	7 400
9b	H	+	NH₂CH₂CH₂OH	→	NH₂CH₂CHOH	+	H₂	2 134
10a.	OH	+	NH₂CH₂CO	→	NH₂CH₂COOH			0
10b	OH	+	NH₂CH₂CO	→	NH₂CHCO	+	H₂	0
11a	H	+	CHNH₂	→	CH₂NH	+	H	0
11b	H	+	CHNH₂	→	CHNH	+	H₂	0
11c	H	+	CHNH₂	→	CH₂NH₂			0
12	H	+	CH₂NH₂	→	CH₃NH₂			0
13	CH	+	NH₂	→	CHNH₂			0
14	O	+	CHNH₂	→	NH₂CHO			0
15	H₂	+	CHNH₂	→	CH₃NH₂			4 010^†
16	CH₄	+	CHNH₂	→	CH₃CH₂NH₂			12 200‡
17a	HCO	+	NH₂CH₂CH₂O	→	NH₂CH₂CH₂OH	+	CO	0
17b	HCO	+	NH₂CH₂CH₂O	→	NH₂CH₂CHO	+	H₂CO	0
18a	CH₂OH	+	NH₂CH₂CH₂O	→	NH₂CH₂CH₂OH	+	H₂CO	0
18b	CH₂OH	+	NH₂CH₂CH₂O	→	NH₂CH₂CHO	+	CH₃OH	0
19	OH	+	NH₂CH₂CH₂O	→	NH₂CH₂CHO	+	H₂O	0
20	NH₂	+	NH₂CH₂CH₂O	→	NH₂CH₂CHO	+	NH₃	0
21	OH	+	NH₂CH₂CHO	→	NH₂CHCHO	+	H₂O	597
22	NH₂	+	NH₂CH₂CHO	→	NH₂CHCHO	+	NH₃	3 390

Notes. For new reactions, the activation energies were calculated as part of this work (described in Section 1). In the case of diffusive reactions with CHNH₂, more than one activation energy was available, depending on the spin state of the molecule. In each case, the lower energy was included in the model. \dagger indicates a triplet state, and \ddagger indicates a singlet state. * indicates a reaction that was already present in the network, which we note here for completeness.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.