Abstract
This chapter is devoted to the recent advances in 14N solid-state NMR related to both theoretical and practical aspects. First, the last NMR methods developed to facilitate the direct or indirect detection of 14N signals are presented in a succinct and comprehensive way. Further, the theoretical approaches that have been applied to model the 14N NMR quadrupolar parameters are explained and discussed regarding their ability to yield pertinent information on structures and dynamics of nitrogen containing solids. Last, most of the results obtained by 14N NMR characterization on inorganic, hybrid organic–inorganic, organic, or biological materials are presented, and the related NMR parameters are compiled in tables.