Synthesis and characterization of phase-pure clathrate-II Rb12.9Si136
Synthesis and characterization of phase-pure clathrate-II Rb12.9Si136
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相纯笼形物-II Rb12.9Si136的合成与表征
DOI：
10.1016/j.jssc.2022.123152
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发表时间：
2022
影响因子：
3.3
通讯作者：
G. S. Nolas
中科院分区：
文献类型：
--
作者：
Gunatilleke, W. D.;Ojo, O. P.;Podig, H.;G. S. Nolas
不同组合物和结构类型的合成和加工具有根本重要性，尽管在许多情况下具有挑战性，其中无机笼形物-II组合物代表一个这样的实例。本文报道了纯相笼形化合物-II（Fd 3 <$m）Rb12.9Si136的合成和结构性质研究。温度依赖性的结构数据和分析表明，在这种无机包合物的晶格非谐性。此外，通过改变处理温度，实现了笼形物-I（Rb 6.8 Si 46，Pm 3 <$n）或笼形物-II（Rb 12.9 Si 136）的选择性合成。我们的结果进行了比较，其他硅包合物。
The synthesis and processing of different compositions and structure types is of fundamental importance, although challenging in many cases with inorganic clathrate-II compositions representing one such example. Herein we report on the synthesis and structural properties investigation of phase pure clathrate-II (Fd 3¯ m) Rb 12.9 Si 136. Temperature-dependent structural data and analyses revealed lattice anharmonicity in this inorganic clathrate. Moreover, the selective synthesis of either clathrate-I (Rb 6.8 Si 46, Pm 3¯ n) or clathrate-II (Rb 12.9 Si 136) was achieved by varying the processing temperature. Our results are compared to that of other silicon clathrates.