Structural characterization of surface immobilized platinum hydrides by sensitivity-enhanced ¹⁹⁵Pt solid state NMR spectroscopy and DFT calculations.

ABSTRACT: Supported single-site platinum hydride compounds are promising heterogeneous catalysts for organic transformations. Few methods exist to describe the structures of single-site Pt catalysts with atomic resolution because of their disordered structures and low Pt loadings. Here, we study the compounds formed when bis(tri-tert-butylphosphino)platinum, Pt(P ^t Bu₃)₂, is supported on dehydroxylated SiO₂ or SiO₂-Al₂O₃. First, we obtain magic angle spinning (MAS) ¹H, ³¹P and ¹⁹⁵Pt ssNMR spectra of four model Pt phosphine compounds with oxidation states of 0 or +2 and coordination numbers between 2 and 4. These compounds are analogs of potential structures present in the suppo

SUBMITTER: Atterberry BA 

PROVIDER: S-EPMC11638849 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature