✍ Scribed by Wiktor Koźwińnski; Jaroslaw Jaźzwiński; Lech Stefaniak
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^13^C, ^14^N and ^15^N NMR data are reported for some mesoionic 2,3‐diphenyltetrazoles with nitrogen‐containing exocyclic groups, and the data confirm their cyclic structures. The protonated forms of these mesoionic structures contain hydrogen atoms at the exocyclic groups.
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## Abstract ^13^C and ^15^N NMR chemical shifts are reported for 2,3‐diphenyltetrazolium‐5‐olate and ‐5‐thiolate and some of their derivatives. The data for N‐1 and C‐5 provide a very satisfactory means of distinguishing between O and S as the exocyclic substituent. The reported chemical shifts are
## Abstract ^13^C and ^15^N NMR spectra of eight substituted 1,2,4‐triazines were measured and assigned. The assignments of the ^13^C NMR spectra were based on the substituent chemical shifts and ^__n__^__J__(C,H) coupling constants. ^15^N NMR chemical shifts generally showing well separated ranges
## Abstract ^1^H, ^13^C and ^15^N chemical shifts of some pyridines and mesoionic oxatriazole aminides were recorded in the absence and presence of the complex dirhodium tetrakis(trifluoroacetate). The adduct formation shifts prove that the nitrogen atom in the pyridine derivatives and the N‐6 atom
## Abstract ^15^N, ^14^N, ^13^C and ^1^H NMR data were used for the structural analysis of seven 1,2,3,4‐thiatriazoles with various exocyclic groups. Measurements at various temperatures were carried out in order to study the behaviour of exocyclic groups. Some ^15^N‐labelled compounds were prepare