Consistent dust and gas models for protoplanetary disks - II. Chemical networks and rates

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Table 4

Selection of elements and chemical (gas+ice) species in the large network.

13 elements	H, He, C, N, O, Ne, Na, Mg, Si, S, Ar, Fe, PAH

(H)	H, H⁺, H⁻, H₂, H, H, H	7
(He)	He, He⁺,	2
(He–H)	HeH⁺,	1
(C−H)	C, C⁺, C⁺⁺, CH, CH⁺, CH₂, CH, CH₃, CH, CH₄, CH, CH,	12
(C−C)	C₂, C, C₂H, C₂H⁺, C₂H₂, C₂H, C₂H₃, C₂H, C₂H₄, C₂H, C₂H₅, C₂H,
	C₃, C, C₃H, C₃H⁺, C₃H₂, C₃H, C₃H,
	C₄, C, C₄H⁺,	23
(C–N)	CN, CN⁺, HCN, HCN⁺, HCNH⁺, HNC, H₂CN, OCN, OCN⁺,	9
(C–O)	CO, CO⁺, HCO, HCO⁺,
	CO₂, CO, HCO, C₂O, C₂O⁺, HC₂O⁺,
	H₂CO, H₂CO⁺, CH₃O, H₃CO⁺, CH₂OH,
	CH₃OH, CH₃OH⁺, CH₃OH,	18
(C–S)	CS, CS⁺, HCS, HCS⁺, H₂CS, H₂CS⁺, H₃CS⁺,
	OCS, OCS⁺, HOCS⁺,	10
(N–H)	N, N⁺, N⁺⁺, NH, NH⁺, NH₂, NH, NH₃, NH, NH,	10
(N–N)	N₂, N, HN,	3
(N–O)	NO, NO⁺, NO₂, NO, HNO, HNO⁺, H₂NO⁺,	7
(N–S)	NS, NS⁺, HNS⁺	3
(O–H)	O, O⁺, O⁺⁺, OH, OH⁺, H₂O, H₂O⁺, H₃O⁺,	8
(O–O)	O₂, O, O₂H⁺,	3
(O–S)	SO, SO⁺, SO₂, SO, HSO,	5
(S–H)	S, S⁺, S⁺⁺, HS, HS⁺, H₂S, H₂S⁺, H₃S⁺,	8
(Si–H)	Si, Si⁺, Si⁺⁺, SiH, SiH⁺, SiH₂, SiH, SiH₃, SiH, SiH₄, SiH, SiH,	12
(Si–C)	SiC, SiC⁺, HCSi⁺,	3
(Si–N)	SiN, SiN⁺, HNSi⁺,	3
(Si–O)	SiO, SiO⁺, SiOH⁺,	3
(Si–S)	SiS, SiS⁺, HSiS⁺,	3
(Na)	Na, Na⁺, Na⁺⁺,	3
(Mg)	Mg, Mg⁺, Mg⁺⁺,	3
(Fe)	Fe, Fe⁺, Fe⁺⁺,	3
(Ne)	Ne, Ne⁺, Ne⁺⁺,	3
(Ar)	Ar, Ar⁺, Ar⁺⁺,	3
(PAH)	PAH-, PAH, PAH⁺, PAH⁺⁺, PAH⁺⁺⁺,	5
ice	all neutral gas species except noble gases have ice counterparts	64

species	total	235

Notes. Neutral more stable molecules are indicated in bold font.

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