Over recent years, research on the structures and properties of ligand-protected gold cluster molecules has gained significant interest. The crystal structure information accumulated to date has revealed the structural preference to adopt closed polyhedral geometries, but the use of multidentate ligands sometimes leads to the formation of exceptional structures. This Account describes results of our studies on diphosphine-coordinated [core+exo]-type gold clusters featuring extra gold atoms outside the polyhedral cores, highlighting (1) their distinct optical properties due to the unique electronic structures generated by the exo gold atoms and (2) electronic/attractive ligand–cluster interactions that cause definite perturbation effects on the cluster properties.

中文翻译：

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具有Core + exo几何形状的磷化氢系金团簇：配体-团簇界面处的独特性质和相互作用

近年来，对配体保护的金簇分子的结构和性质的研究引起了极大的兴趣。迄今为止积累的晶体结构信息已经揭示了采用封闭多面体几何结构的结构偏好，但是多齿配体的使用有时会导致形成异常的结构。该说明描述了我们对二膦配位的[core + exo ]型金簇的研究结果，这些簇具有多面体核之外的额外金原子，强调了（1）由于exo金原子产生的独特电子结构，它们具有独特的光学特性，并且（ 2）电子/有吸引力的配体-簇相互作用，对簇的性质产生确定的扰动效应。