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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >SYNTHESIS AND STRUCTURE OF LI2TA2O3F6 [German]
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SYNTHESIS AND STRUCTURE OF LI2TA2O3F6 [German]

机译:Li2TA2O3F6的合成与结构[德语]

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Colourless crystals of Li2Ta2O3F6 are obtained by heating a mixture of LiTaF6 and LiTaO3 in a sealed nickel tube to 700 degrees C for 5 days, followed by slow cooling to room temperature. Li2Ta2O3F6 is also a product of controlled hydrolysis of LiTaF6. It crystallizes in the trigonal space group P3(1)21 with a = 558.11(3), c = 2096.10(4) pm, and Z = 3. The structure is built up by corner-sharing TaO3F3-octahedra forming anionic double layers parallel (001). The lithium cations are intercalated between these double layers having a square-pyramidal coordination by fluorine atoms. For the educt LiTaF6 a new high-temperature modification was found, which is reversibly formed at 150 degrees C. It crystallizes with a = 783.5 pm in the cubic NaSbF6 type. [References: 17]
机译:通过在密封的镍管中将LiTaF6和LiTaO3的混合物加热至700摄氏度5天,然后缓慢冷却至室温,可获得Li2Ta2O3F6的无色晶体。 Li2Ta2O3F6也是LiTaF6受控水解的产物。它在三边形空间群P3(1)21中结晶,a = 558.11(3),c = 2096.10(4)pm,Z =3。该结构由角共享的TaO3F3-八面体构成,形成平行的阴离子双层(001)。锂阳离子被氟原子插入具有方锥体配位的这些双层之间。对于离析物LiTaF6,发现了一种新的高温修饰,该修饰在150℃可逆地形成。在立方晶NaSbF6型中,其结晶度为a = 783.5 pm。 [参考:17]

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