RT journal article
T1 Reduced Tiara-like Palladium Complex for Suzuki Cross-Coupling Reactions
A1 Daka, Mario
A1 Montini, Tiziano
A1 Pengo, Paolo
A1 Marussi, Giovanna
A1 Crosera, Matteo
A1 Adami, Gianpiero
A1 Delgado Jaén, Juan José
A1 Giambastiani, Giuliano
A1 Fertey, Pierre
A1 Fonda, Emiliano
A1 Pasquato, Lucia
A1 Fornasiero, Paolo
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
K1 low loading Pd catalysts
K1 irradiation/deposition process
K1 heterogeneous catalysis
K1 HAADF-STEM
K1 EXAFS
AB The design of highly active and structurally well-defined catalysts has become a crucial issue for heterogeneous catalysed reactions while reducing the amount of catalyst employed. Beside conventional synthetic routes, the employment of polynuclear transition metal complexes as catalysts or catalyst precursors has progressively intercepted a growing interest. These well-defined species promise to deliver catalytic systems where a strict control on the nuclearity allows to improve the catalytic performance while reducing the active phase loading. This study describes the development of a highly active and reusable palladium-based catalyst on alumina (Pd8/Al2O3) for Suzuki cross-coupling reactions. An octanuclear tiara-like palladium complex was selected as active phase precursor to give isolated Pd-clusters of ca. 1 nm in size on Al2O3. The catalyst was thoroughly characterised by several complementary techniques to assess its structural and chemical nature. The high specific activity of the catalyst has allowed to carry out the cross-coupling reaction in 30 min using only 0.12 mol % of Pd loading under very mild and green reaction conditions. Screening of various substrates and selectivity tests, combined with recycling and benchmarking experiments, have been used to highlight the great potentialities of this new Pd8/Al2O3 catalyst. © 2023 The Authors. Chemistry - A European Journal published by Wiley-VCH GmbH.
PB John Wiley and Sons Inc
SN 1521-3765
YR 2023
FD 2023
LK http://hdl.handle.net/10498/31588
UL http://hdl.handle.net/10498/31588
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 15-nov-2026