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Figure 3
Solid-state NMR spectra for MLX-II. (a) 13C and (b) 15N CPMAS registered with νr = 13.33 kHz, (c)–(f) correlation spectra registered under very fast magic angle spinning conditions (νr = 55.55 kHz). (c) 1H–1H SQ–DQ correlation with back-to-back (BaBa) recoupling. (d)–(f) inv-1H–13C HETCOR with (d) short and (e)–(f) long contact time. The F1 projection in (d)–(f) shows the 13C CPMAS NMR spectrum registered with νr = 13.33 kHz, whereas F2 in (c)–(d) is the 1H MAS spectrum registered with νr = 55.55 kHz. The signal assignment of the most important resonances is shown in the respective spectra, and the full assignment is given in Table S1.

IUCrJ
Volume 12| Part 1| January 2025| Pages 109-122
ISSN: 2052-2525
https://doi.org/10.1107/S2052252524011898