Orientation of tensorial interactions determined from two-dimensional NMR powder spectra

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Abstract
Methods are described for determining the mutual orientation of molecular interaction tensors based on two‐dimensional NMRpowderspectra. Necessary conditions are derived under which this determination can be made, procedures for the computation and analysis of 2Dpowderspectra are indicated and a technique for the construction of ridge plots is worked out. Chemical shift resolved dipolar powderspectra provide an easily interpreted representation of the mutual orientation of chemical shielding and dipolar coupling tensors. The various features and practical applications of such spectra are demonstrated with 2Dpowderspectra of benzene, lead formate, and methyl formate.

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