Silicon monosulfide

Silicon monosulfide is a chemical compound of silicon and sulfur. The chemical formula is SiS. Molecular SiS has been detected at high temperature in the gas phase.^[1] The gas phase molecule has an Si-S bondlength of 192.93 pm, this compares to the normal single bond length of 216 pm,^[1][2] and is shorter than the Si=S bond length of around 201 pm reported in an organosilanethione.^[1] Historically a pale yellow-red amorphous solid compound has been reported.^[3] The behavior of silicon can be contrasted with germanium which forms a stable solid monosulfide.

Silicon monosulfide

Names
IUPAC name Silicon monosulfide
Identifiers
CAS Number	12504-41-5
3D model (JSmol)	Interactive image
PubChem CID	21538250
InChI InChI=1S/SSi/c1-2 Key: DWFFKGPZNGKUPH-UHFFFAOYSA-N
SMILES [Si]=S
Properties
Chemical formula	SiS
Molar mass	60.150 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Further reading

• Müller, H. S. P.; McCarthy, M. C.; Bizzocchi, L.; Gupta, H.; Esser, S.; Lichau, H.; Caris, M.; Lewen, F.; et al. (2007). "Rotational spectroscopy of the isotopic species of silicon monosulfide, SiS". Physical Chemistry Chemical Physics. 9 (13): 1579–86. Bibcode:2007PCCP....9.1579M. doi:10.1039/B618799D. PMID 17429551.
• Chattopadhyaya, Surya; Chattopadhyay, Anjan; Das, Kalyan Kumar (2002). "Electronic Spectrum of Silicon Monosulfide: Configuration Interaction Study". The Journal of Physical Chemistry A. 106 (5): 833. Bibcode:2002JPCA..106..833C. doi:10.1021/jp013332e.
• Birk, Helmut; Jones, Harold (1990). "Diode laser measurement of the infrared spectrum of silicon monosulfide". Chemical Physics Letters. 175 (5): 536. Bibcode:1990CPL...175..536B. doi:10.1016/0009-2614(90)85577-Y.