[Sib>4b>]^4- and [Sib>9b>]^4- Clusters Crystallized from Liquid Ammonia Solution - Synthesis and Characterization of Kb>8b>[Sib>4b>][Sib>9b>]·(NHb>3b>)b>14.6b>

详细信息    查看全文

• 作者：Christian B. Benda ; Thomas Henneberger ; Wilhelm Klein and Thomas F. F&auml ; ssler
• 刊名：Zeitschrift für anorganische und allgemeine Chemie
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：643
• 期：2
• 页码：146-148
• 全文大小：567K
• ISSN：1521-3749

文摘

The extraction of the silicide Kb>12b>Sib>17b> with liquid ammonia in the presence of a sequestering agent and AuPPhb>3b>Cl or Zn(Cp*)b>2b> led to crystals of the solvate compound Kb>8b>[Sib>4b>][Sib>9b>]<b>·b>(NHb>3b>)b>14.6b>, which was characterized by single-crystal X-ray diffraction. It is the first compound with an isolated and ligand-free [Sib>4b>]^4– cluster obtained from solution. It also contains one [Sib>9b>]^4– cluster per formula unit, whereas the precursor Kb>12b>Sib>17b> is built from [Sib>4b>]^4– and [Sib>9b>]^4– clusters with a 2:1 ratio.