Ca<sub>3</sub>Na<sub>4</sub>LiBe<sub>4</sub>B<sub>10</sub>O<sub>24</sub>F: A New Beryllium Borate with a Unique Beryl Borate <sub>∞</sub><sup>2</sup>[Be<sub>8</sub>B<sub>16</sub>O<sub>40</sub>F<sub>2</sub>] Layer Intrabridged by [B<sub>12</sub>O<sub>24</sub>] Groups
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A novel beryllium borate, Ca3Na4LiBe4B10O24F, has been discovered. It possesses a unique ∞2[Be8B16O40F2] layer composed of two opposite parallel [Be4B4O12F]∞ layers bridged with [B12O24] polyborates. The linkage of [B12O24] to other structural units is first found in anhydrous borates. In the ∞2[Be8B16O40F2] layer, multiple tunnels are arranged along different directions resided by the alkali and alkaline-earth cations. The compound remains stable in an ambient atmosphere from room temperature to the melting point at 830 °C and melts incongruently.
创建时间：
2014-08-18
