Sulfur mononitride
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| Names | |||
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| Preferred IUPAC name
sulfur mononitride | |||
| Systematic IUPAC name
Azaniumylsulfanidylidyne | |||
Other names
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| Identifiers | |||
3D model (JSmol)
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| Abbreviations | (NS)(.) | ||
| ChEBI | |||
| ChemSpider | |||
| 660 | |||
PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |||
| NS | |||
| 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).
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Sulfur mononitride is an inorganic compound with the molecular formula NS. It is the sulfur analogue of and isoelectronic to the radical nitric oxide, NO. It was initially detected in outer space in giant molecular clouds and later the coma of comets. [1] Synthetically, it is produced by electric discharge in mixtures of nitrogen and sulfur compounds, or combustion in the gas phase and by photolysis in solution.[2]
Synthesis
The NS radical is a highly transient species, but it can be observed spectroscopically over short periods of time through several methods of generation.
Discharge of nitrogen and sulfur vapor
Transmitting uncondensed electric discharge through a glass tube with quartz windows containing a mixture of nitrogen and sulfur vapor (rigorously free of oxygen) results in the spectrum of emitted light gaining bands consistent with the formation of NS. [3]
Passing a mixture of gaseous N2 and S2Cl2 through the side arm of an absorption cell undergoing microwave discharge produces NS. Infrared diode laser spectroscopy taken using this method allowed for derivation of the equilibrium rotational constant, and therefore calculation of the equilibrium bond length as 1.4940 Å. [4]
Bonding
The valence electrons of this compound match those of nitric oxide. Unlike NO, NS reacts upon condensation to form polythiazyl or tetrasulfur tetranitride. Sulfur mononitride can be described as some average of a set of resonance structures, one of which has a bond order of one accompanied by charge separation.[citation needed][clarification needed]
Related compounds
- Trithiazyl trichloride (NSCl)3
See also
References
- ^ 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. S2CID 189898818.
- ^ Burr, J. G. (1985). Chemi- and Bioluminescence. Clinical and Biochemical Analysis. Vol. 16. CRC Press. p. 99. ISBN 0-8247-7277-6.
- ^ "The band spectrum of nitrogen sulphide (NS)". Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character. 136 (829): 28–36. 1932-05-02. doi:10.1098/rspa.1932.0064. ISSN 0950-1207.
- ^ Matsumara, Keiji; Kawaguchi, Kentarou; Jagai, Keijchi; Yamada, Chikashi; Hirota, Eizi (1980). "Infrared Diode Laser Spectroscopy of the NS Radical". Journal of Molecular Spectroscopy (84): 68–73.
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