MICROENVIRONMENT OF PHOSPHINE GROUP ON A PHOSPHINATED SILICA SURFACE AS PROBED BY SOLID-STATE HIGH-RESOLUTION 31P NMR SPECTROSCOPY
Two types of microenvironments were discriminated for the Ph2P(CH2)8Si≡ group fixed on a silica gel by use of solid-state high-resolution 31P NMR spectroscopy. While one is also detectable with conventional (solution) NMR in a suspended state, another shows more solid-like mobility.