十二硼化钪
| 十二硼化钪 | |
|---|---|
| |
| IUPAC名 scandium dodecaboride | |
| 识别 | |
| CAS号 | 12230-35-2 
|
| 性质 | |
| 化学式 | ScB12 |
| 摩尔质量 | 174.69 g/mol g·mol⁻¹ |
| 结构 | |
| 晶体结构 | 四方, tI26 |
| 空间群 | I4/mmm, No. 139 |
| 若非注明，所有数据均出自标准状态（25 ℃，100 kPa）下。 | |
合成
[编辑]以7:1的比例混合硼粉和氧化钪粉，用等离子体炬或类似器具将其加热至2500 °C，在冷水中淬火并用浓盐酸洗涤，即可製得ScB12。[1]
晶体学
[编辑]ScB12最初被认为具有立方结构，[2]但之后的研究表明它具有四方结构（晶胞a=522pm，c=735pm）。[1]最近已经表明它确实存在立方形式，但需要稳定。[3]
参考文献
[编辑]- ^ 1.0 1.1 Matkovich, V.I.; J Economy; R F Giese Jr; R Barrett. The structure of metallic dodecaborides (PDF). Acta Crystallogr. 1965, 19 (6): 1056–1058 [2008-08-28]. doi:10.1107/S0365110X65004954. （原始内容存档 (PDF)于2014-12-22）.
- ^ Przybylska, Maria; Allan H. Reddoch; George J. Ritter. The Preparation and Structure of Lutetium Diboride, Scandium Dodecaboride and Lutetium Antimonide. J. Am. Chem. Soc. 1963, 85 (4): 407–411. doi:10.1021/ja00887a008.
- ^ Paderno, Y.; N. Shitsevalova. Stabilization of cubic scandium dodecaboride. Journal of Alloys and Compounds. 1995, 219 (1–2): 119–123. doi:10.1016/0925-8388(94)05048-1.
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