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Keywords:

  • Heterogeneous catalysis;
  • Nanoparticles;
  • Core–shell structures;
  • Nickel;
  • Magnetic properties;
  • Polymerization

Abstract

We report the covalent support of functionalized nickel complexes on magnetic core–shell hybrid particles γ-Fe2O3/SiO2. Two completely different ways of connecting the particle with these nickel complexes were carried out. The first approach used the hydrosilylation method between the alkene-substituted nickel complex and a silane. In a second approach, the particles were connected with the complexes by means of click chemistry (copper-catalyzed Huisgen 1,3-dipolar cycloaddition). For this purpose, the nickel complexes were substituted with an alkyne moiety. Transmission and scanning electron microscopies, energy-dispersive X-ray diffraction, and FTIR spectroscopy were the methods employed to characterize the successful heterogenization of the nickel complexes.