Through‐space ¹¹ B– ²⁷ Al correlation: Influence of the recoupling channel

Through-space heteronuclear correlation (D-HETCOR) experiments based on multiple-quantum (D-HMQC) and refocused insensitive nuclei enhanced by polarization transfer (D-RINEPT) sequences have been proven to be useful approaches for the detection of spatial proximity between half-integer quadrupolar in solids under magic-angle spinning (MAS) conditions. The corresponding pulse employ coherence transfers mediated dipolar interactions, which are reintroduced MAS radiofrequency irradiation only one two correlated nuclei. We investigate herein using numerical simulations spin dynamics solid-state NMR magnesium aluminoborate glass how choice channel recoupling is applied affects efficiency D-HMQC D-RINEPT 11B 27Al Experimental results show that maximum achieved when scheme channel, magnetization parallel B0 axis average.