Crystal structure of bulky-ligand-protected Au 24 (S-C 4 H 9 ) 16
Crystal structure of bulky-ligand-protected Au 24 (S-C 4 H 9 ) 16
复制标题
大配体保护的Au 24 (S-C 4 H 9 ) 16 的晶体结构
DOI：
10.1107/s2053229622006738
复制
发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Dass, Amala
中科院分区：
文献类型：
--
作者：
Wijesinghe, Kalpani Hirunika;Oliver, Allen G.;Dass, Amala
原子精确的硫醇盐保护的金纳米分子由于其独特的电子和化学性质而引起了人们的兴趣。这些纳米分子的结构对于理解它们的特殊性质非常重要。在这里，我们报告的X-射线晶体结构的24个原子的金纳米分子保护的16叔丁基硫醇配体。通过X射线晶体学和电喷雾质谱（ESI-MS）证实了Au 24（S-C4 H9）16 {poly[hexadecakis（μ-tert-butylthiolato）tetracosagold]}的组成。该纳米分子在单相合成中合成，并从己烷-乙醇分层溶液中结晶。X射线结构证实了16个原子的核心由两个单体和两个三聚斯台普斯与四个桥接配体保护。Au 24（S-C4 H9）16团簇遵循闭壳幻数8。
Atomically precise thiolate-protected gold nanomolecules have attracted interest due to their distinct electronic and chemical properties. The structure of these nanomolecules is important for understanding their peculiar properties. Here, we report the X-ray crystal structure of a 24-atom gold nanomolecule protected by 16 tert-butylthiolate ligands. The composition of Au24(S-C4H9)16 {poly[hexadecakis(μ-tert-butylthiolato)tetracosagold]} was confirmed by X-ray crystallography and electrospray ionization mass spectrometry (ESI–MS). The nanomolecule was synthesized in a one-phase synthesis and crystallized from a hexane–ethanol layered solution. The X-ray structure confirms the 16-atom core protected by two monomeric and two trimeric staples with four bridging ligands. The Au24(S-C4H9)16 cluster follows the shell-closing magic number of 8.