One and two-dimensional solid-state NMR investigations of the three-dimensional structures of zeolite-organic sorbate complexes

This chapter describes one- and two-dimensional solid-state NMR investigations of the three-dimensional structures of zeolite–organic sorbate complexes. High-resolution solid-state NMR has emerged in recent years as an important complementary technique to XRD in the investigation of zeolite structures, being particularly sensitive to short to medium-range geometries and orderings. For some years, we have worked to develop new approaches in the application of solid-state NMR techniques together with XRD studies to the investigation of zeolite structures with the aim of ultimately being able to determine the 3D structures of their complexes with sorbed organic molecules. The chapter outlines the development of these techniques and their current standing. In the chapter, the application of the CP technique with protons as the source nuclei is described as representative of this class of experiments. In order to localize the polarization source as much as possible, experiments are carried out with the two specifically deuterated p-xylenes.