Iodine heptafluoride

Iodine ( VII ) fluoride

Colorless gas

Gaseous

2.8 g · cm -1 ( at 6 ° C, as a liquid )

4.8 ° C

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Iodheptafluorid, also known as iodine ( VII ) fluoride, is a chemical compound from the elements fluorine and iodine at a ratio of 1:7. It belongs to the inter-halogen compounds.

Representation

Iodheptafluorid can be produced from the elements in two steps. First you burn iodine in fluorine to iodine pentafluoride. After raising the temperature to 300 ° C, and further supply of fluorine, the reaction product can be collected.

Properties

Iodheptafluorid is a strong fluorinating reagent which reacts even with glass and water and irritates the skin and mucous membranes. As a solid, it forms colorless crystals which sublime at 4.8 ° C. Iodheptafluoridmoleküle have a pentagonal bipyramidiale structure as predicted by the VSEPR model. The temperature at the triple point is 6.5 ° C.