Multinuclear NMR study of some mesoionic 3-phenyl-1-thia-2,3,4-triazol-3-ium-5-ylmethanides with various exocyclic groups
摘要:
Six mesoionic 3-phenyl-1 -thia-2,3,4-triazol-3-ium-5-ylmethanides (3,5-9) have been synthesized for the first time. C-13, N-14 and N-15 NMR data have been collected and interpreted in terms of molecular structure. The 1J(C-13-C-13) coupling constants of the ring-exocyclic group bond have been determined and are discussed.