open access

https://hdl.handle.net/2115/79273

Basic [Au-25(SCH2CH2Py)(18)](-).Na+ Clusters: Synthesis, Layered Crystallographic Arrangement, and Unique Surface Protonation

英語

pyridyl

2020-09-16

Wiley-Blackwell

Angewandte chemie-international edition

58(38)

13411-13415

We report the first synthesis of high-purity and high-yield Au25 clusters protected by the basic pyridyl ethanethiol (HSCH2CH2Py, 4-PyET and 2-PyET). Single-crystal X-ray diffraction of the [Au25(4-PyET)18]−·Na+ clusters has revealed a structure similar to that known for the phenyl ethanethiolate analog, but with pyridyl-N coordination to Na+, a more relaxed ligand shell, and a profoundly layered arrangement in the solid state. Because of the pendant Py moiety, the [Au25(4-PyET)18]− clusters are endowed with a unique (de)protonation equilibria, which has been characterized in detail by UV-vis absorption and 1H-NMR spectroscopy. [Au25(4-PyET)18]− clusters showed an unexpectedly H+-dependent solubility that is tunable in aqueous and organic solvents. The successful synthesis of the basic Py-terminated thiolate-protected Au25 clusters paves the way to realize a new family of metalloid clusters possessing basic properties.

学術雑誌論文

Accepted Manuscript

This is the peer reviewed version of the following article: Z. Huang, Y. Ishida, T. Yonezawa, Angew. Chem. Int. Ed. 2019, 58, 13411. , which has been published in final form at Z. Huang, Y. Ishida, T. Yonezawa, Angew. Chem. Int. Ed. 2019, 58, 13411. . This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.

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