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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >On the Reactivity of NHC~(tBu)AuCl towards Rb_6Cs_6Si_(17): The First Gold-Silicon Cluster [(NHC~(tBu)Au)_6(η~2-Si_4)]Cl_2·7NH_3 and an Imide Capped Gold Triangle (NHC~(tBu)Au)_3NHCl
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On the Reactivity of NHC~(tBu)AuCl towards Rb_6Cs_6Si_(17): The First Gold-Silicon Cluster [(NHC~(tBu)Au)_6(η~2-Si_4)]Cl_2·7NH_3 and an Imide Capped Gold Triangle (NHC~(tBu)Au)_3NHCl

机译：关于NHC〜（TBU）AUCL朝向RB_6CS_6SI_（17）的反应性：第一金 - 硅簇[（NHC〜（TBU）Au）_6（η〜2-Si_4）] CL_2·7nH_3和酰亚胺封端的金三角形（ NHC〜（TBU）Au）_3nhcl

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摘要

Crystals of the two new compounds (NHC~(tBu)Au)_3NHCl and [(NHC~(tBu)Au)_6(η~2-Si_4)]Cl_2·7NH_3 could be isolated from the reaction of Rb_6Cs_6Si_(17) with NHC~(tBu)AuCl in the presence of [2.2.2]-cryptand in liquid ammonia. Both compounds were characterized by single-crystal X-ray diffraction and crystallize trigonally without any alkali metals or chelating ligands. Additionally, the crystal of [(NHC~(tBu)Au)_6(η~2- Si_4)]Cl_2·7NH_3 was further interpreted by means of ELF and NBO calculations. In the case of (NHC~(tBu)Au)_3NHCl, NMR experiments provided an exceptional insight into the reaction processes in solution and allowed for the detection of sequential precursors. In the class of capped gold triangles (NHC~(tBu)Au)_3NHCl impresses with its unique characteristics of being capped by an imide and bound to N-heterocyclic carbenes as ligands instead of the ubiquitously employed phosphines. The gold capped silicon tetrahedron [(NHC~(tBu)Au)_6(η~2- Si_4)]Cl_2·7NH_3 represents the first known silicide-gold compound, as well as the first known functionalized Zintl anion, crystallized with a cationic central moiety.
机译：Rb_6Cs_6Si_（17）与NHC（tBu）AuCl在[2.2.2]存在下在液氨中反应，可分离出两种新化合物（NHC~（tBu）Au）3NHl和[（NHC~（tBu）Au）_6（η~2-Si_4）]Cl u 2·7NHu 3的晶体。这两种化合物都通过单晶X射线衍射进行了表征，并且在没有任何碱金属或螯合配体的情况下呈三角形结晶。此外，通过ELF和NBO计算进一步解释了[（NHC~（tBu）Au）6（η~2-Si_4）]Cl_2·7NH_3的晶体。在（NHC~（tBu）Au）3NHl的情况下，核磁共振实验提供了对溶液中反应过程的独特见解，并允许检测连续的前体。在封端的金三角形（NHC~（tBu）Au）中，_3NHl以其独特的特性给人留下深刻印象，即被酰亚胺封端并作为配体与N-杂环卡宾结合，而不是普遍使用的磷化氢。金包覆硅四面体[（NHC~（tBu）Au）6（η~2-Si_4）]Cl_2·7NH_3代表了第一个已知的硅化物金化合物，以及第一个已知的官能化锌阴离子，其与阳离子中心部分结晶。

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