Co-crystallization of octahedral and icosahedral fluoroanions in K₃(AsF₆)(B₁₂F₁₂) and Cs₃(AsF₆)(B₁₂F₁₂). Rare examples of salts containing fluoroanions with different

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• 作者：Dmitry V. Peryshkov ; Evgeny Goreshnik ; Zoran Mazej ; Steven H. Strauss
• 关键词：Polyhedral borane ; Fluoroanion ; X-ray structure ; Ternary salt
• 刊名：Journal of Fluorine Chemistry
• 出版年：2010
• 出版时间：November 2010
• 年：2010
• 卷：131
• 期：11
• 页码：1225-1228
• 全文大小：300 K

文摘

Crystals grown from anhydrous HF solutions of CsAsF₆ and Cs₂B₁₂F₁₂ or KAsF₆ and Cs₂B₁₂F₁₂ are shown by Raman spectroscopy and single-crystal X-ray diffraction to be the ternary salts K₃(AsF₆)(B₁₂F₁₂) or Cs₃(AsF₆)(B₁₂F₁₂). Both compounds exhibit a modified version of the anti-perovskite structure. They are rare examples of crystals that simultaneously contain octahedral and icosahedral molecular species and are also rare examples of salts containing fluoroanions with different shapes and charges. The crystallographic results show that both compounds are densely packed.