In heterogeneous catalysis, the catalyst is in a different phase from the reactants. Recommanded Product: Tetrakis(acetonitrile)palladium(II) tetrafluoroborate, At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 21797-13-7, name is Tetrakis(acetonitrile)palladium(II) tetrafluoroborate. In an article，Which mentioned a new discovery about 21797-13-7
Cyclometalation of bis(sulfoxide)-substituted m-xylene derivatives, rac / meso-1,3-(iPrS(O)CH2)2C6H4 , occurred readily with Pd(II) using two synthetic routes. The first route utilized [Pd(NCMe)4] [(BF4)2] as starting material and led to the exclusive isolation of the C2-symmetric diastereomer [rac-2,6-(iPrS(O)CH2)2C6H3 Pd(NCMe)][BF4], rac-3, even though spectroscopic measurements confirmed the formation of meso-3. The second palladation pathway used Pd(BF4)Cl(NCPh)2 and both diastereomers rac- and meso-2,6-(iPrS(O)CH2)2C6H3 PdCl, rac-and meso-4, were separable by fractional crystallization. Characterization of the isolated complexes using 1H and 13C NMR, FT-IR, and X-ray crystallography illuminated subtle differences between the two diastereomers of 4 and provided a rationale for the greater solution stability of rac-4 relative to meso-4. The source of the instability is due to the stereochemical configuration at sulfur. Additional solution studies, examined by variable-temperature 1H. NMR (25 to -130 C), probed the dynamic exchange behavior of the three complexes. In addition, electrospray mass spectrometry experiments of rac-4 in methanol solutions detected the presence of the unsupported mu-chloro-bridged dimer, [2,6-(iPrS(O)CH2))2C6H3Pd ]2-mu2-Cl.
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Reference：
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method