Identifiers | |
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3D model (JSmol)
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Properties | |
I4O9 | |
Molar mass | 651.609 g·mol−1 |
Appearance | light yellow solid[1] |
Melting point | 75 °C (decomposes)[1] |
reacts | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Tetraiodine nonoxide is an iodine oxide with the chemical formula I4O9.
Tetraiodine nonoxide can be produced by reacting ozone and iodine in carbon tetrachloride at −78 °C:[2][3]
It can also be produced by heating iodic acid and phosphoric acid together:[4]
Tetraiodine nonoxide is a light yellow solid that can easily hydrolyze. It decomposes above 75 °C:[2]
Like diiodine tetroxide, tetraiodine nonoxide contains both I(III) and I(V), and disproportionate to iodate and iodide under alkaline conditions:[2]
It reacts with water to form iodic acid and iodine:[3]