Transformative Si8R8 Siliconoids
Transformative Si8R8 Siliconoids
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DOI：
10.3390/inorganics6040107
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发表时间：
2018-10
期刊：
影响因子：
2.9
通讯作者：
Naohiko Akasaka;S. Ishida;T. Iwamoto
中科院分区：
文献类型：
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作者：
Naohiko Akasaka;S. Ishida;T. Iwamoto
具有未取代硅顶点（类硅）的分子硅团簇作为不饱和硅团簇和元素硅气相沉积的潜在中间体而受到关注。研究类硅的行为有助于更好地理解元素硅化学气相沉积过程中硅团簇的转变。在这里，我们报道了Si8R8类硅在温和的热条件下急剧转变为三个新的硅团簇。通过XRD分析确定了新团簇的分子结构。两个团簇是具有不饱和硅顶点的不寻常几何形状的类硅，另一个是双（二）烯，它具有两个硅硅双键，通过中央多面体硅骨架相互作用。观察到的硅骨架的剧烈转变表明，不饱和硅分子团簇具有巨大的潜力，可以提供各种具有前所未有的结构和性能的硅分子团簇。
Molecular silicon clusters with unsubstituted silicon vertices (siliconoids) have received attention as unsaturated silicon clusters and potential intermediates in the gas-phase deposition of elemental silicon. Investigation of behaviors of the siliconoids could contribute to the greater understanding of the transformation of silicon clusters as found in the chemical vapor deposition of elemental silicon. Herein we reported drastic transformation of a Si8R8 siliconoid to three novel silicon clusters under mild thermal conditions. Molecular structures of the obtained new clusters were determined by XRD analyses. Two clusters are siliconoids that have unsaturated silicon vertices adopting unusual geometries, and another one is a bis(disilene) which has two silicon–silicon double bonds interacted to each other through the central polyhedral silicon skeleton. The observed drastic transformation of silicon frameworks suggests that unsaturated molecular silicon clusters have a great potential to provide various molecular silicon clusters bearing unprecedented structures and properties.