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rhenium heptafluoride : ウィキペディア英語版
rhenium heptafluoride

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Rhenium heptafluoride is the compound with the formula ReF7. It is a yellow low melting solid, and is the only thermally stable metal heptafluoride. It has a distorted pentagonal bipyramidal structure similar to IF7, which was confirmed by neutron diffraction at 1.5K. The structure is non-rigid as evidenced by electron diffraction studies.
It can be prepared from the elements at 400 °C:
:2Re + 7 F2 → 2 ReF7
With fluoride donors such as CsF, the ReF8 anion is formed, which has a square antiprismatic structure. With antimony pentafluoride, SbF5, a fluoride acceptor, the ReF6+ cation is formed.〔
==References==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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