Nitrogen monosulfide

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Nitrogen monosulfide
Wireframe model of mononitrogen monosulfide
Spacefill model of mononitrogen monosulfide
Preferred IUPAC name
Mononitrogen monosulfide
Systematic IUPAC name
Other names

Thionitroso radical

Thionitrosyl radical
Abbreviations (NS)(.)
ChemSpider 4576119 N
Jmol interactive 3D Image
Molar mass 46.07 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Mononitrogen monosulfide is an inorganic compound with the formula SN. It is the sulfur analogue of the radical nitric oxide, NO. It can be produced through electrical discharges in mixtures of nitrogen and sulfur compounds, as well as the reaction of nitrogen with sulfur vapor. The valence electrons of this compound match those of nitric oxide.[1] In outer space, this compound was first detected in the giant molecular cloud Sgr B2. It was subsequently observed in cold dark clouds and in the comae of comets.[2]

Mononitrogen monosulfide exists as a resonance structure, of which a species with a bond order of one accompanied by charge separation is the major contributor.

See also[edit]


  1. ^ Burr, J. G. (1985). Chemi- and Bioluminescence. Clinical and Biochemical Analysis 16. CRC Press. p. 99. ISBN 0-8247-7277-6. 
  2. ^ Canaves, M. V.; de Almeida, A. A.; Boice, D. C.; Sanzovo, G. C. (March 2002). "Nitrogen Sulfide in Comets Hyakutake (C/1996 B2) and Hale-Bopp (C/1995 O1)". Earth, Moon, and Planets 90 (1): 335–347. Bibcode:2002EM&P...90..335C. doi:10.1023/A:1021582300423.