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Table 3

Chemical species and dust clusters included in the IK Tau chemical model.

Atoms Molecules

O OH H2O O2
C CH CO CO2 CS OCS HCN CN
Si SiO HSiO H2SiO SiO2 SiS Si2
N NH NO NH2 NH3 N2
S SH H2S SO SO2 HOSO
P PH P2 PO PN
Mg MgH MgO MgOH
Fe FeH FeO Fe2
F HF F2
Al AlH AlO AlOH AlO2 AlCl Al2 Al2O
Cl HCl Cl2 ClO
Ca CaO CaOH CaCl
Na NaH NaCl
Ti TiO TiO2
K KH KCl
H H2

Dust clusters

Si2O2 Si2O3 Si3O3 Si4O4 H2Si2O2 HSi2O3 H2Si2O3 H2Si2O4
MgSi2O3 MgSi2O4 MgSi2O5 MgSi2O6H2 Mg2Si2O4 Mg2Si2O5 Mg2Si2O6 Mg2Si2O7H2
Mg3Si2O5 Mg3Si2O6 Mg3Si2O7 Mg3Si2O8H2 Mg4Si2O6 Mg4Si2O7 Mg4Si2O8
Al2O2 Al2O3 Al4O6

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