Chemistry:Carbon monophosphide

From HandWiki
Carbon monophosphide
Preferred IUPAC name
Other names
Carbon phosphide
Carbon monophosphide
Cyaphogenyl radical
3D model (JSmol)
Molar mass 42.985 g·mol−1
Related compounds
Related compounds
CN SiP CCP radical, HCP
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Carbon monophosphide is a diatomic chemical with formula CP. It is isoelectronic with carbon monosulfide (CS) and is a heavier analog of the cyanide radical (CN). CP and CN are both open-shell species with doublet Π ground electronic states while the ground states of CS and CO are closed-shell. The related anion, CP, is called cyaphide.

Detection in interstellar medium

The simple diatomic carbon monophosphide (CP) was detected in the circumstellar envelope of the star IRC +10216 in 1990.[1] The identification was made by matching 10 rotational lines observed with the IRAM 30m radiotelescope.[2][3]


  1. Guelin, M.; Cernicharo, J.; Paubert, G.; Turner, B. E. (1990). "Free CP in IRC +10216". Astronomy and Astrophysics 230: L9. Bibcode1990A&A...230L...9G. 
  2. "CAS 12326-85-1: Carbon monophosphide". 
  3. "Astromolecule of the month".