首页> 外文期刊>Acta crystallographica. Section C, Structural chemistry. >A structural study of Si6-ring-containing [Si6Cl14]2? chlorosilicates
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A structural study of Si6-ring-containing [Si6Cl14]2? chlorosilicates

机译:含Si6环的[Si6Cl14]2α的结构研究氯硅酸盐

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The crystal structures of four substituted-ammonium dichloride dodecachlorohexasilanes are presented. Each is crystallized with a different cation and one of the structures contains a benzene solvent molecule: bis(tetraethylammonium) dichloride dodecachlorohexasilane, 2C8H20N+·2Cl?·Cl12Si6, (I), tetrabutylammonium tributylmethylammonium dichloride dodecachlorohexasilane, C16H36N+·C13H30N+·2Cl?·Cl12Si6, (II), bis(tetrabutylammonium) dichloride dodecachlorohexasilane benzene disolvate, 2C16H36N+·2Cl?·Cl12Si6·2C6H6, (III), and bis(benzyltriphenylphosphonium) dichloride dodecachlorohexasilane, 2C25H22P+·2Cl?·Cl12Si6, (IV). In all four structures, the dodecachlorohexasilane ring is located on a crystallographic centre of inversion. The geometry of the dichloride dodecachlorohexasilanes in the different structures is almost the same, irrespective of the cocrystallized cation and solvent. However, the crystal structure of the parent dodecachlorohexasilane molecule shows that this molecule adopts a chair conformation. In (IV), the P atom and the benzyl group of the cation are disordered over two sites, with a site-occupation factor of 0.560?(5) for the major-occupied site.
机译:介绍了四种取代的二氯化铵十二氯六硅烷的晶体结构。每种均用不同的阳离子结晶,其中一个结构包含苯溶剂分子:双(四乙基铵)二氯化物十二氯六硅烷,2C8H20N +·2Cl2·Cl12Si6,(I),四丁基三丁基甲基铵二氯化物十二氯化六硅烷,C16H36N +·C12ClCl30N + (Ⅱ),二氯化双(四丁基铵)十二氯六硅烷苯二磺酸盐,2C16H36N +·2Cl3·Cl12Si6·2C6H6,(Ⅲ)和双氯化苄基(三苯基苄基)二氯十二烷基六硅烷,2C25H22P +·2Cl2·Cl12Si6,(Ⅳ)。在所有四个结构中,十二氯六硅烷环位于反演的晶体学中心。无论共结晶的阳离子和溶剂如何,二氯化物十二氯六硅烷在不同结构中的几何形状几乎相同。然而,母体十二氯六硅烷分子的晶体结构表明该分子采用椅子构象。在(Ⅳ)中,阳离子的P原子和苄基在两个位点上是无序的,主要位点的位点占有率为0.560Ω(5)。

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