Soluble Platinum Nanoparticles Ligated by Long-Chain N-Heterocyclic Carbenes as Catalysts

被引：34
作者：
Martinez-Prieto, Luis M. [1 ]
Rakers, Lena [2 ]
Lopez-Vinasco, Angela M. [1 ]
Cano, Israel [1 ]
Coppel, Yannick [3 ]
Philippot, Karine [3 ]
Glorius, Frank [2 ]
Chaudret, Bruno [1 ]
van Leeuwen, Piet W. N. M. [1 ]
机构：
[1] CNRS, UPS, INSA, UMR5215,LPCNO, 135 Ave Rangueil, F-31077 Toulouse, France
[2] Westfalische Wilhelms Univ Munster, Organ Chem Inst, Corrensstr 40, D-48149 Munster, Germany
[3] CNRS, LCC, UPS, 205 Route Narbonne, F-31077 Toulouse, France
来源：
CHEMISTRY-A EUROPEAN JOURNAL | 2017年 / 23卷 / 52期
关键词：
hydroboration; ligand design; n-heterocyclic carbenes; platinum nanoparticles; surface chemistry; TRANSITION-METAL-COMPLEXES; CROSS-COUPLING REACTIONS; RUTHENIUM NANOPARTICLES; SOLID-STATE; PALLADIUM NANOPARTICLES; NMR; LIGANDS; HYDROGENATION; SPECTROSCOPY; REACTIVITY;
D O I：
10.1002/chem.201702288
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Soluble platinum nanoparticles (Pt NPs) ligated by two different long-chain N-heterocyclic carbenes (LC-IPr and LC-IMe) were synthesized and fully characterized by TEM, high-resolution TEM, wide-angle X-ray scattering (WAXS), X-ray photoelectron spectroscopy (XPS), and solution NMR. The surface chemistry of these NPs (Pt@LC-IPr and Pt@LC-IMe) was investigated by FT-IR and solid state NMR using CO as a probe molecule. A clear influence of the bulkiness of the N-substituents on the size, surface state, and catalytic activity of these Pt NPs was observed. While Pt@LC-IMe showed no activity in the hydroboration of phenylacetylene, Pt@LC-IPr revealed good selectivity for the trans-isomer, which may be supported by a homogeneous species. This is the first example of hydroboration of acetylenes catalyzed by non-supported Pt NPs.
引用
收藏
页码：12779 / 12786
页数：8
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