Synthesis of Water-Soluble Palladium Nanoparticles Stabilized by Sulfonated N-Heterocyclic Carbenes

被引:37
作者
Asensio, Juan M. [1 ]
Tricard, Simon [2 ]
Coppel, Yannick [3 ]
Andres, Roman [1 ]
Chaudret, Bruno [2 ]
de Jesus, Ernesto [1 ]
机构
[1] Univ Alcala, Dept Quim Organ & Quim Inorgan, Edificio Farm,Campus Univ, E-28871 Madrid, Spain
[2] Univ Toulouse, Lab Phys & Chim Nanoobjets, INSA, CNRS, 135 Ave Rangueil, F-31077 Toulouse, France
[3] CNRS, LCC, 205 Route Narbonne,BP44099, F-31077 Toulouse 4, France
关键词
aqueous phase; nanoparticles; n-heterocyclic carbene ligands; organometallic chemistry; palladium; CROSS-COUPLING REACTIONS; IMIDAZOLIUM SALTS; RUTHENIUM NANOPARTICLES; GOLD NANOPARTICLES; OXIDATIVE-ADDITION; IONIC LIQUIDS; COMPLEXES; LIGAND; NMR; PD;
D O I
10.1002/chem.201702204
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A strategy involving the decomposition of palladium(II) organometallic complexes with sulfonated N-heterocyclic carbene ligands leads to the formation of stable and water-soluble Pd nanoparticles. Three different methodologies (thermal decomposition, reduction under (CO)-C-13 atmosphere, and reduction with H-2) gave particles with different shapes and sizes, ranging from 1.5 to 7 nm. The structures of the organometallic intermediates and organic decomposition products were elucidated by NMR spectroscopy. To check the accessibility of the surface, the nanoparticles were tested as catalysts for the chemoselective hydrogenation of styrene in water. An effect of the particle size on the catalyst activity was observed. The aqueous phase was recycled up to ten times without any precipitation of metallic palladium.
引用
收藏
页码:13435 / 13444
页数:10
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