21797-13-7, Name is Tetrakis(acetonitrile)palladium(II) tetrafluoroborate, belongs to catalyst-palladium compound, is a common compound. SDS of cas: 21797-13-7In an article, once mentioned the new application about 21797-13-7.
Both the conformation and flexibility of four mixed oxathia crown ethers and their Ag(I) and Pd(II) complexes were studied by 1H NMR (delta5, J, NOE, T1), 13C NMR, dynamic 1 NMR spectroscopy and molecular modelling. The stoichiometry and stability constants of the complexes were determined from corresponding Job’s plots in the case of Ag(I) complexes as the interchange between free and complexed states was fast on the NMR timescale; interchange for the Pd(II) complexes was sufficiently slow such that distinct sub-spectra were observable for the free and complexed states. In all cases where complexation was observed, 1:1 complexes were formed. Global minima structures determined from the modelling studies were analysed with respect to the barriers to ring interconversion, the flexibility of the species in solution and the preferred complexation of Ag(I) and Pd(II) to the sulfur atoms of the crown ethers.
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Reference：
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method