[Si4]4– and [Si9]4– Clusters Crystallized from Liquid Ammonia Solution – Synthesis and Characterization of K8[Si4][Si9]·(NH3)14.6
[Si4]4– and [Si9]4– Clusters Crystallized from Liquid Ammonia Solution – Synthesis and Characterization of K8[Si4][Si9]·(NH3)14.6
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DOI：
10.1002/zaac.201600369
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
C. Benda;T. Henneberger;W. Klein;T. Fässler
中科院分区：
文献类型：
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作者：
C. Benda;T. Henneberger;W. Klein;T. Fässler
在螯合剂和 AuPPh3Cl 或 Zn(Cp*)2 存在下，用液氨萃取硅化物 K12Si17，得到溶剂化物 K8[Si4][Si9]·(NH3)14.6 的晶体，并通过单晶 X 射线衍射对其进行了表征。它是第一个从溶液中获得的具有分离且无配体的 [Si4]4- 簇的化合物。每个分子式单元还包含一个 [Si9]4- 簇，而前体 K12Si17 是由 [Si4]4- 和 [Si9]4- 簇以 2:1 的比例构建而成。
The extraction of the silicide K12Si17 with liquid ammonia in the presence of a sequestering agent and AuPPh3Cl or Zn(Cp*)2 led to crystals of the solvate compound K8[Si4][Si9]·(NH3)14.6, which was characterized by single-crystal X-ray diffraction. It is the first compound with an isolated and ligand-free [Si4]4– cluster obtained from solution. It also contains one [Si9]4– cluster per formula unit, whereas the precursor K12Si17 is built from [Si4]4– and [Si9]4– clusters with a 2:1 ratio.