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Tetrafluoroberyllate or orthofluoroberyllate BeF42− is an anion containing beryllium and fluorine. The ion has a tetrahedral shape, the same size and outer electron structure as sulfate. Therefore, many compounds that contain sulfate, have equivalents with tetrafluoroberyllate. Examples of these are the Langbeinites, and Tutton's salts. ==Properties== The Be–F distance is 1.45-1.53Å. This bond is ''sp3'' and has a longer length than the ''sp'' bond in BeF2 gas.〔 In trifluoroberyllates, there are actually BeF4 tetrahedra arranged in a triangle, so that three fluorine atoms are shared on two tetrahedra each, resulting in a formula of Be3F9.〔 In the tetrafluoroberyllates the tetrahedra can rotate to various degrees. At room temperatures they are hindered from moving. But as temperature increases they can rotate around the three-fold access, with a potential barrier of 12.5 kcal/mol. At higher temperatures the movement can become isotropic with a potential barrier of 14.5 kcal/mol.〔 Similar formula compounds have magnesium or zinc in a similar position. e.g. K2MgF4 or (NH4)2ZnF4 but these are not as stable.〔 Tetrafluoroberyllate has a biological effect by inhibiting F-ATPase ATP producing enzymes in mitochondria and bacteria. It does this by attempting to react with adenosine diphosphate because it resembles phosphate. However once it does this it remains stuck in the F1 part of the enzyme and inhibits it from further function. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tetrafluoroberyllate」の詳細全文を読む スポンサード リンク
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