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首页> 外文期刊>Crystal growth & design >Soluble Silver Acetylide for the Construction and Structural Conversion of All-Alkynyl-Stabilized High-Nuclearity Homoleptic Silver Clusters
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Soluble Silver Acetylide for the Construction and Structural Conversion of All-Alkynyl-Stabilized High-Nuclearity Homoleptic Silver Clusters

机译：可溶性炔丙基银用于全炔基稳定的高核均质银团簇的构建和结构转化

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摘要

Silver acetylide complex [Ag(ArC=C)](n) (Ar = 3,5-di-tert-butylphenyl) with unprecedented high solubility in common organic solvents has been designed and synthesized. The high solubility is due to two bulky tert-butyl substituents on the phenyl ring. This feature is significant to construct and isolate single crystals of all-alkynyl-stabilized silver clusters, which are crucial to investigate the intrinsic binding interaction and coordination modes between Ag(I) and ethynide ligands. Crystallization of [Ag(ArC C)](n) under various conditions resulted in three high-nuclearity homoleptic silver acetylide clusters, namely, [Ag-21(ArC C)(20)] (OH) (1), [Ag-16(ArC C)(16)] (2), and [Ag-15(ArC C)(15)] (3). Complex 1 has a [Ag-21] duster protected by twenty 3,5-di-tert-butyl-phenylethynide ligands. Complexes 2 and 3 have neutral [Ag-16] and [Ag-15] clusters, respectively. In addition to these homoleptic silver dusters, two new silver acetylides [Ag-20(ArC C)(16)(CH3COO)(4)] (4) and [Ag-22(ArC C)(16)(NO3)(4)(CH3CH2OH)(4)](OH)(2) (5) were synthesized. The acetate and nitrate anions in these structures are more like counterions instead of acting as critical building blocks or templates for cluster assembly. These results illustrated the significance of 3,5-di-tert-butyl-phenylethynide ligands in the construction and stabilization of high-nuclearity silver clusters. Analysis of structures of 1-5 revealed several novel coordination modes between Ag(I) and ethynide ligands, which contributed considerably to our knowledge of Ag(I)-ethynide binding interactions.
机译：设计并合成了在常规有机溶剂中具有空前的高溶解度的乙炔化银络合物[Ag（ArC = C）]（n）（Ar = 3,5-二叔丁基苯基）。高溶解度归因于苯环上的两个庞大的叔丁基取代基。此功能对于构建和分离所有炔基稳定的银簇的单晶具有重要意义，这对于研究Ag（I）与乙炔配体之间的固有结合相互作用和配位模式至关重要。 [Ag（ArC C）]（n）在各种条件下的结晶导致三个高核均化乙炔银簇，即[Ag-21（ArC C）（20）]（OH）（1），[Ag- 16（ArC C）（16）]（2）和[Ag-15（ArC C）（15）]（3）。配合物1具有由20个3，5-二叔丁基-苯基乙炔配体保护的[Ag-21]除尘剂。配合物2和3分别具有中性[Ag-16]和[Ag-15]簇。除了这些均银的喷粉器外，还有两种新的乙炔化银[Ag-20（ArC C）（16）（CH3COO）（4）]（4）和[Ag-22（ArC C）（16）（NO3）（4） ）（CH 3 CH 2 OH）（4）]（OH）（2）（5）被合成。这些结构中的乙酸根和硝酸根阴离子更像是抗衡离子，而不是充当簇组装的关键构件或模板。这些结果说明了3，5-二叔丁基苯基乙炔配体在高核银团簇的构建和稳定中的重要性。 1-5的结构分析揭示了Ag（I）和乙炔配体之间的几种新型配位模式，这大大有助于我们对Ag（I）-乙炔结合相互作用的了解。

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