Au13(8 e):描述一类特殊的含二十面体Au13基序的金簇的二级块
Au13(8e): A Secondary Block for Describing a Special Group of Liganded Gold Clusters Containing Icosahedral Au13 Motifs
摘要:
最近提出了一个大统一模型(GUM)来理解配位金团簇的结构解剖和演化。除了三角形Au_3(2e)和四面体Au_4(2e)两种基本块体外,我们还引入了一种次级块体,即具有8e价电子的二十面体Au_(13),记为Au_(13)(8e)。利用这个次级块,可以方便地分析一组特殊的含二十面体Au 13基序的配体金纳米团簇的结构解剖和演化。此外,一个新的配体保护簇Au 49(PR 3)10(SR)15Cl 2被预测表现出高的化学和热稳定性,这表明它的可能性在实验室中合成。
英文摘要:
A grand unified model (GUM) has been proposed recently to understand structure anatomy and evolution of liganded gold clusters. In this work, besidesthe two types of elementary blocks (triangular Au3(2e) and tetrahedral Au4(2e)), we introduce a secondary block, namely, the icosahedral Au13 with 8e valence electrons, noted as Au13(8e). Using this secondary block, structural anatomy and evolution of a special group of liganded gold nanoclusters containing icosahedral Au13 motifs can be conveniently analyzed. In addition, a new ligand-protected cluster Au49(PR3)10(SR)15Cl2 is predicted to exhibit high chemical and thermal stability, suggesting likelihood of its synthesis in the laboratory.
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