Samiksha Jaiswal (Editor)

Selenium oxydichloride

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Related compounds
  
SOCl2, POCl3

Molar mass
  
165.87 g/mol

Boiling point
  
177.2 °C

Appearance
  
colorless liquid

Formula
  
SeOCl2

Density
  
2.43 g/cm³

Melting point
  
10.9 °C

Selenium oxydichloride wwwlookchemcom300w201006247791233jpg

Selenium oxydichloride is the inorganic compound with the formula SeOCl2. It is a colorless liquid. With a high dielectric constant (55) and high specific conductance, it is an attractive solvent. Structurally, it is a close chemical relative of thionyl chloride SOCl2, being a pyramidal molecule.

Preparation and reactions

Selenium oxydichloride can be prepared by several methods, and a popular one involves the conversion of selenium dioxide to dichloroselenious acid followed by dehydration:

SeO2 + 2 HCl → Se(OH)2Cl2 Se(OH)2Cl2 → SeOCl2 + H2O

The original synthesis involved the redistribution reaction of selenium dioxide and selenium tetrachloride.

The compound hydrolyzes readily.

References

Selenium oxydichloride Wikipedia
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