Magnetic Shielding and Chemical Shifts: Basics

Influence of fluorine side-group substitution on the crystal structure formation of benzene-1,3,5-trisamides

“…Topological information such as unit cell constants and global arrangements of molecules might still be obtained with reasonable accuracy, but local structural details are usually strongly affected. 24,25 Here, solid-state nuclear magnetic resonance (NMR) spectroscopy offers complementary information based on the three basic interactionschemical shift, 26 dipolar interaction 27 and quadrupolar splitting 28 the local structural properties may be extracted and combined with PXRD data at different steps of the structure solution. 29 Symmetry information such as the content of the asymmetric unit can be obtained through Wyckoff spectra, 30 high-resolution experiments or direct determination of symmetry elements by exploiting orientational correlations of chemical shift tensors.…”