Two channel static pe probe

The wide-line ²H NMR measurements were performed on a Bruker Avance III 300 spectrometer operating at 46.07 MHz for ²H. A Bruker two-channel static PE probe with a homemade 2.5 mm coil was used to record the ²H spectra. The spectra were acquired using the solid echo sequence (90°−τ − 90°−τ −acquisition). The ²H pulse width was 2 µs at an RF field strength of γB₁/2π = 125 kHz. The refocusing delay τ was approximately 28 µs.

²H and ²⁰⁷Pb static nuclear magnetic resonance (NMR) experiments were performed in a Bruker 300 MHz NMR spectrometer operating at 46.07 MHz for ²H and 62.73 MHz for ²⁰⁷Pb. A Bruker two-channel static PE probe with a home-made 2.5 mm coil was used to record the spectra. The ²H spectra were acquired using the solid echo sequence. The ²H pulse width was 2.5 μs at an RF field strength of 100 kHz. ¹³C and ¹⁹F magic angle spinning (MAS) NMR spectra were recorded by a Brucker 500 MHz NMR spectrometer at 25 °C at 10 kHz. ¹³C chemical shifts were referenced to adamantane (38.5 ppm). ¹⁹F chemical shifts were referenced to pure CFCl₃ (0 ppm) using NaF (− 224 ppm) as a secondary reference. The powders were scrapped from glass substrates and packed in a MAS rotor in a N₂-filled glovebox before being transferred into the NMR probe.