Water-Soluble Palladium Nanoclusters as Catalysts in Ligand-Free Suzuki-Miyaura Cross-Coupling Reactions

Priya Karna, Micheal Okeke, Debora Motta Meira, Zou Finfrock, Dong Sheng Yang

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

This Letter reports Pd-nanocluster catalysts and their formation in ligand-free Suzuki-Miyaura reactions with palladium(II) nitrate as a precatalyst. The catalysts are water-soluble neutral Pd tetramer and trimer in their singlet electronic states, as identified by UV-vis absorption spectroscopy, and are formed by leaching of spherical Pd(0) nanoparticles with an average diameter of about 3 nm. The Pd(0) nanoparticles are produced by reducing palladium(II) nitrate and characterized with transmission electron microscopy and Pd K-edge extended X-ray fine structure spectroscopy. The Pd(II) reduction is induced by ethanol, enhanced by potassium hydroxide, and monitored with X-ray photoelectron spectroscopy.

Original languageEnglish
Pages (from-to)3188-3193
Number of pages6
JournalACS Applied Nano Materials
Volume5
Issue number3
DOIs
StatePublished - Mar 25 2022

Bibliographical note

Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.

Keywords

  • Pd nanoclusters
  • Pd(II) reduction
  • UV-vis spectroscopy
  • X-ray absorption spectroscopy
  • X-ray photoelectron spectroscopy
  • cross-coupling
  • homogeneous catalysis

ASJC Scopus subject areas

  • General Materials Science

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