Fig. 2: In situ XAS characterized of COP1-T-Pt catalysis Hydrosilylation.
From: Biomimetic caged platinum catalyst for hydrosilylation reaction with high site selectivity
a Hydrosilylation reaction between triethoxysilane and 1-hexene catalyzed by COP1-T-Pt. b Kinetic study in neat 1-hexene at room temperature, and the concentration of COP1-T-Pt was 1.67×10−6 M. The initial reaction rate was measured when the conversion of 1-hexene was less than 2%. The error bar represented the standard error for each initial reaction rate calculated with ten points (Supplementary Fig. 34). c Normalized Pt L3-edge XANES spectra of different samples. d Fourier transformed (FT) k2-weighted χ(k)-function of the EXAFS spectra for Pt L3-edge spectra. e–g Quantitative EXAFS fitting curves at R space for COP1-T-Pt prior to reaction, during reaction, and after the reaction with the models shown in each panel. h–j Comparison between the experimental Pt L3-edge XANES spectra of COP1-T-Pt (prior to, during, after reaction) and the theoretical spectra calculated for the corresponding depicted structures. Since XAS only probed the immediate environment around the Pt centers, 1-propene was used instead for succinctness.
