Kevin M. Frankiewicz, Nicole S. Willeit, Viktor Hlukhyy, Thomas F. Fässler
{"title":"An efficient multi-gram access in a two-step synthesis to soluble, nine-atomic, silylated silicon clusters","authors":"Kevin M. Frankiewicz, Nicole S. Willeit, Viktor Hlukhyy, Thomas F. Fässler","doi":"10.1038/s41467-024-55211-z","DOIUrl":null,"url":null,"abstract":"<p>Silicon is by far the most important semiconducting material. However, solution-based synthetic approaches for unsaturated silicon-rich molecules require less efficient multi-step syntheses. We report on a straightforward access to soluble, polyhedral Si<sub>9</sub> clusters from the binary phase K<sub>12</sub>Si<sub>17</sub>, which contains both [Si<sub>4</sub>]<sup>4−</sup> and [Si<sub>9</sub>]<sup>4−</sup> clusters. [Si<sub>4</sub>]<sup>4−</sup> ions, characterised by a high charge per atom ratio, behave as strong reducing agents, preventing [Si<sub>9</sub>]<sup>4−</sup> from directed reactions. By the here reported separation of [Si<sub>4</sub>]<sup>4−</sup> by means of fractional crystallisation, Si<sub>9</sub> clusters of the precursor phase K<sub>12</sub>Si<sub>17</sub> are isolated as monoprotonated [Si<sub>9</sub>H]<sup>3−</sup> ions on a multi-gram scale and further crystallised as their 2.2.2-Cryptate salt. 20 grams of the product can be obtained through this two-step procedure - a new starting point for silicon <i>Zintl</i> chemistry, such as the isolation and structural characterisation of a trisilylated [<sup>Me</sup>Hyp<sub>3</sub>Si<sub>9</sub>]<sup>−</sup> cluster.</p>","PeriodicalId":19066,"journal":{"name":"Nature Communications","volume":"201 1","pages":""},"PeriodicalIF":14.7000,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nature Communications","FirstCategoryId":"103","ListUrlMain":"https://doi.org/10.1038/s41467-024-55211-z","RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MULTIDISCIPLINARY SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Silicon is by far the most important semiconducting material. However, solution-based synthetic approaches for unsaturated silicon-rich molecules require less efficient multi-step syntheses. We report on a straightforward access to soluble, polyhedral Si9 clusters from the binary phase K12Si17, which contains both [Si4]4− and [Si9]4− clusters. [Si4]4− ions, characterised by a high charge per atom ratio, behave as strong reducing agents, preventing [Si9]4− from directed reactions. By the here reported separation of [Si4]4− by means of fractional crystallisation, Si9 clusters of the precursor phase K12Si17 are isolated as monoprotonated [Si9H]3− ions on a multi-gram scale and further crystallised as their 2.2.2-Cryptate salt. 20 grams of the product can be obtained through this two-step procedure - a new starting point for silicon Zintl chemistry, such as the isolation and structural characterisation of a trisilylated [MeHyp3Si9]− cluster.
期刊介绍:
Nature Communications, an open-access journal, publishes high-quality research spanning all areas of the natural sciences. Papers featured in the journal showcase significant advances relevant to specialists in each respective field. With a 2-year impact factor of 16.6 (2022) and a median time of 8 days from submission to the first editorial decision, Nature Communications is committed to rapid dissemination of research findings. As a multidisciplinary journal, it welcomes contributions from biological, health, physical, chemical, Earth, social, mathematical, applied, and engineering sciences, aiming to highlight important breakthroughs within each domain.