A triflate and alkynyl protected Ag43 nanocluster with a passivated surface

Ting Li; Xiaoqin Cui; Linfeng Liang; Cui Luo; Huan Li; Xian-Ming Zhang

doi:10.1039/d0ra01244k

A triflate and alkynyl protected Ag₄₃ nanocluster with a passivated surface

RSC Adv. 2020 May 20;10(33):19397-19400. doi: 10.1039/d0ra01244k.

Authors

Ting Li¹, Xiaoqin Cui², Linfeng Liang², Cui Luo², Huan Li², Xian-Ming Zhang^{1

2}

Affiliations

¹ School of Chemistry & Material Science, Shanxi Normal University Linfen 041004 China xmzhang@sxu.edu.cn.
² Institute of Crystalline Materials, Shanxi University Taiyuan 030006 China 59584340@sxu.edu.cn.

Abstract

A trifluoromethanesulfonate (OTf) and tert-butylacetylene ( ^t BuC[triple bond, length as m-dash]C^-) co-protected silver nanocluster (NC), Ag₄₃( ^t BuC[triple bond, length as m-dash]C)₂₄(CF₃SO₃)₈ (Ag₄₃), was synthesized and characterized. Single crystal X-ray diffraction analysis revealed its total structure. 43 Ag atoms are arranged into a three-concentric-shell Ag@Ag₁₂@Ag₃₀ structure. Both OTf and ^t BuC[triple bond, length as m-dash]C^- ligands bonded with Ag atoms in a μ₃ mode. The application of Ag₄₃ as a catalyst for the reaction of silane with alcohol or H₂O indicated that the surface ligands had a profound passivation effect, which significantly influenced the reactivity and selectivity.