Identified Interstellar and Circumstellar Molecules
|
| Molecules with 2 atoms
H2 | hydrogen | |
CO | carbon monoxide | |
| CSi | carbon monosilicide | |
CP | carbon monophosphide |
| CS | carbon monosulfide | |
NO | nitric oxide |
| NS | nitrogen monosulfide | |
SO | sulfur monoxide |
| HCl | hydrogen chloride | |
NaCl | sodium chloride |
| KCl | potassium chloride | |
AlCl | aluminum monochloride |
| AlF | aluminum monofluoride | |
PN | phosphorus mononitride |
| SiN | silicon mononitride | |
SiO | silicon monoxide |
| SiS | silicon monosulfide | |
NH | imidyl radical |
| OH | hydroxyl radical | |
C2 | diatomic carbon |
| CN | cyanide radical | | HF | hydrogen fluoride |
| CO+ | | | SO+ |
| CH | | | CH+ |
Molecules with 3 atoms
H2O | water | |
H2S | hydrogen sulfide |
| HCN | hydrogen cyanide | |
HNC | hydrogen isocyanide |
| CO2** | carbon dioxide | |
SO2 | sulfur dioxide |
| MgCN | magnesium cyanide | |
MgNC | magnesium isocyanide |
| NaCN | sodium cyanide | |
N2O | nitrous oxide |
| NH2 | amidyl radical | |
OCS | carbonyl sulfide | |
| HCO | formyl radical | |
C3 | triatomic carbon |
| C2H | | | HCO+ |
| HOC+ | | |
N2H+ |
| HNO | | |
HCS+ |
| H3+ | | |
C2O |
| C2S | | |
SiC2 |
| H2D+? | | |
CH2 |
Molecules with 4 atoms
| NH3 | ammonia | |
H2CO | formaldehyde |
| H2CS | thioformaldehyde | |
C2H2 | acetylene |
| HNCO | isocyanic acid | |
HNCS | thioisocyanic acid |
| H3O+ | hydronium ion | |
HOCO+ |
| C3S | | |
H2CN |
| cyclic-C3H | | |
linear-C3H |
| HCCN | | |
H2CO+ |
| C2CN | | |
C3O |
| HCNH+ | | | CH2D+ |
Molecules with 5 atoms
|
| CH4 | methane | |
SiH4 | silane |
| CH2NH | methyleneimine | |
NH2CN | cyanamide |
| CH2CO | ketene | |
HCOOH | formic acid |
| HC2CN | cyanoacetylene | |
HCCNC | isocyanoacetylene |
| cyclic-C3H2 | | |
linear-C3H2 |
| CH2CN | | |
C4H |
| C4Si | | |
C5 |
| HNCCC | |
Molecules with 6 atoms
| CH3OH | methanol | |
CH3SH | methanethiol |
| C2H4 | ethylene | |
CH3CN | methylcyanide |
| CH3NC | methylisocyanide | |
HC2CHO | propynal |
| NH2CHO | formamide | |
C4H2 | butadiyne |
| C5H | | |
HC3NH+ |
| C5O |
Molecules with 7 atoms
| CH3C2H | methylacetylene | | CH3CHO | acetaldehyde |
| CH3NH2 | methylamine | |
CH2CHCN | acrylonitrile |
| HC4CN | cyanobutadiyne | |
C6H |
Molecules with 8 atoms
| CH3COOH | acetic acid | |
HCOOCH3 | methyl formate |
| CH3C2CN | cyanomethylacetylene |
Molecules with 9 atoms
| (CH3)2O | dimethyl ether | |
C2H5OH | ethanol |
| C2H5CN | ethylcyanide | |
CH3C4H | methylbutadiyne |
| HC6CN | cyanohexatriyne |
Molecules with 10 atoms
| (CH3)2CO | acetone |
CH3C4N? | cyanomethylbutadiyne |
| NH2CH2COOH? | aminoacetic acid | |
Molecules with 11 atoms
| HC8CN | cyanooctatetrayne |
Molecules with 13 atoms
| HC10CN | cyanodecapentayne |
**CO2 was detected as an ice.
? = uncertain detection
(This list was last revised on August 12, 1997.)