|
| Species with 1 atom
| H | hydrogen | |
Al | aluminum |
| C | carbon | |
O | oxygen |
| S | sulfur | |
N | nitrogen |
| Na | sodium | |
K | potassium |
| Ca | calcium | |
Cr | chromium |
| Mn | manganese | |
Fe | iron |
| Ni | nickel | |
Cu | copper |
| V | vanadium | | Co | cobalt |
| Mo | molybdenum | | Ti | titanium |
| Mg | magnesium | | Si | silicon |
| C+ | | |
Ca+ |
Species with 2 atoms
CN | cyanide radical | |
CS | carbon monosulfide |
| CO | carbon monoxide | |
NH | imidyl radical |
| S2 | diatomic sulfur | |
C2 | diatomic carbon |
| OH | hydroxyl radical | |
SO? | sulfur monoxide |
| SH? | | | NO? |
| CH | | |
12C13C | |
| 13CN | | |
CO+ |
| SH+ | | |
OH+ |
| N2+ | | |
CN+ |
| CH+ | | |
Species with 3 atoms
| H2O | water | |
HDO | monodeuterated water |
| CO2 | carbon dioxide | |
C3 | triatomic carbon |
| H2S | hydrogen sulfide | |
NH2 | amidyl radical |
| SO2 | sulfur dioxide | |
HNC | hydrogen isocyanide |
| HCO | formyl radical | | HCN | hydrogen cyanide |
| OCS | carbonyl sulfide | | H2O+ |
| HCO+ | | | CO2+ |
| H2S+ | | | H13CN |
| DCN |
Species with 4 atoms
|
| H2CS | thioformaldehyde | |
H2CO | formaldehyde |
| HNCO | isocyanic acid | |
NH3 | ammonia |
| C2H2 | acetylene | |
HNCO- |
Species with 5 atoms
| HCOOH | formic acid | |
HC3N | cyanoacetylene |
| CH4 | methane | |
NH4+ | ammonium ion |
Species with 6 atoms
| CH3OH | methyl alcohol | | CH3CN | methyl cyanide |
| NH2CHO | formamide | |
Species with 8 atoms
| C2H6 | ethane | |
HCOOCH3 | | methyl formate |
Other
| silicates | | uncharacterized hydrocarbons |
(This list was last revised on August 5, 1997.)