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首页> 外文期刊>Chemistry: A European journal >A Second Metalloid Ga_(18) Cluster and Its Topological Similarity to the High-Pressure Ga-II Modification
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A Second Metalloid Ga_(18) Cluster and Its Topological Similarity to the High-Pressure Ga-II Modification

机译：第二类金属Ga_（18）团簇及其与高压Ga-II修饰的拓扑相似性

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摘要

The topology of many modifications of elemental gallium is reflected in the large variety of metalloid Ga clusters that have been isolated as intermediates on the way from the meta-stable molecular GaX species (X = Cl,Br,I) by means of disproportionation to the bulk metal.Herein,we report the synthesis and characterization of the first metalloid cluster anion [Ga_(18)-(PtBu_2)_(10)]~(3-) with the singular core topology that resembles the gallium high-pressure modification Ga-II.The stabilization of the cluster anion through ion-pair contacts with a chainlike "Li_4Br_2 backbone" is discussed.Furthermore,the compound is discussed in context of the other metalloid clusters Ga_(18)R_8 and Ga_(22)R_8 (R = SitBu_3) and their structural relation to the elemental modifications Ga-III and beta-Ga,respectively.
机译：元素镓的许多修饰的拓扑结构反映在各种各样的准金属Ga簇中，这些簇通过中间歧化从亚稳定分子GaX物种（X = Cl，Br，I）中分离为中间体。这里，我们报道了具有类似于镓高压修饰Ga的奇异核拓扑的第一个准金属簇阴离子[Ga_（18）-（PtBu_2）_（10）]〜（3-）的合成和表征-II。讨论了通过与链状“ Li_4Br_2主链”进行离子对接触来稳定簇阴离子的方法。此外，在其他准金属簇Ga_（18）R_8和Ga_（22）R_8（R = SitBu_3）及其与元素修饰Ga-III和β-Ga的结构关系。

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