Astatine iodide is an
interhalogen compound
In chemistry, an interhalogen compound is a molecule which contains two or more different halogen atoms ( fluorine, chlorine, bromine, iodine, or astatine) and no atoms of elements from any other group.
Most interhalogen compounds known are b ...
with the chemical formula
At I. It is the second heaviest known interhalogen compound, after
iodine tribromide
Iodine tribromide is an interhalogen with chemical formula IBr3.
Properties
Iodine tribromide is a dark brown liquid that is miscible with ethanol and ethers.Dr. Bernd Dill (Hrsg.), Prof. Dr. Fred Robert Heiker (Hrsg.), Prof. Dr. Andreas Kirschn ...
.
Production
Astatine iodide is produced by the direct combination of
astatine
Astatine is a chemical element with the symbol At and atomic number 85. It is the rarest naturally occurring element in the Earth's crust, occurring only as the decay product of various heavier elements. All of astatine's isotopes are short-li ...
and
iodine
Iodine is a chemical element with the symbol I and atomic number 53. The heaviest of the stable halogens, it exists as a semi-lustrous, non-metallic solid at standard conditions that melts to form a deep violet liquid at , and boils to a vi ...
in a 1:1 molar ratio:
:2 At + I
2 → 2 AtI
References
Bibliography
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{{Iodides
Interhalogen compounds
Diatomic molecules
Astatine compounds
Iodine compounds