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perxenate
In chemistry, perxenates are salts of the yellow〔 xenon-containing anion . This anion has octahedral molecular geometry, as determined by Raman spectroscopy, having O–Xe–O bond angles varying between 87° and 93°. The Xe–O bond length was determined by X-ray crystallography to be 1.875 Å.
==Synthesis==
Perxenates are synthesized by the disproportionation of xenon trioxide when dissolved in strong alkali:
:2 (s) + 4 (aq) → Xe (g) + (aq) + (g) + 2 (l)
When is used as the alkali, barium perxenate can be crystallized from the resulting solution.〔
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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