Related compounds 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 | |
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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)2Cl2Se(OH)2Cl2 → SeOCl2 + H2OThe original synthesis involved the redistribution reaction of selenium dioxide and selenium tetrachloride.
The compound hydrolyzes readily.
References
Selenium oxydichloride Wikipedia(Text) CC BY-SA