Polonium tetrachloride

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Polonium tetrachloride
Names
Systematic IUPAC name
Polonium tetrachloride
Identifiers
10026-02-5
3D model (Jmol) Interactive image
ChemSpider 4896024
UNII 1K48QH7W29 YesY
Properties
PoCl4
Molar mass 350.79 g/mol
Appearance Bright yellow crystalline solid[1]
Melting point ≈ 300 °C (in chlorine)[1]
Boiling point 390 °C (734 °F; 663 K)
soluble,[vague] but rather slow hydrolysis
Solubility very soluble in hydrochloric acid and thionyl chloride, moderately soluble in ethanol and acetone, decomposes in dilute nitric acid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Polonium tetrachloride (also known as polonium(IV) chloride) is a chemical compound with the formula PoCl4. It is a hygroscopic bright yellow crystalline solid at room temperature. Above 200 °C, it tends to decompose into polonium dichloride and excess chlorine, similar to selenium tetrachloride and tellurium tetrachloride.[1]

Structure[edit]

Polonium tetrachloride is either monoclinic or triclinic.

Appearance[edit]

Polonium tetrachloride is bright yellow at room temperature. At its melting point (300 °C), it becomes straw yellow, and at its boiling point (390 °C), it becomes scarlet. Its vapours are purple-brown until 500 °C, when they turn blue-green.[1]

Preparation[edit]

Polonium tetrachloride may be prepared by:

Chemistry[edit]

Polonium tetrachloride forms a complex with two moles of tributyl phosphate.

Like selenium tetrachloride and tellurium tetrachloride, polonium tetrachloride forms PoCl
5
and PoCl2−
6
halogen complexes.[1]

References[edit]

  1. ^ a b c d e f Holleman, A. F.; Wiberg, E. (2001), Inorganic Chemistry, San Diego: Academic Press, p. 594, ISBN 0-12-352651-5