ISSN:
0749-1581
Keywords:
15N NMR
;
Hydrazides
;
15N-1H coupling constants
;
13C-1H coupling constants
;
Rotamer distribution
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Trifluoroacethydrazide is unstable even in the solid state with respect to hydrazonium N,N′-ditrifluoroacetyl hydrazinate, as shown by 15N and 13C NMR spectroscopy. The 1H, 13C and 15N NMR data and rotamer distributions of formyl-, acet- and trifluoroacet-hydrazide and of N,N′-diformyl-, N,N′-diacetyl- and N,N′-ditrifluoroacetyl-hydrazine are reported and compared with the results of earlier investigations. A conformational dependence is observed for 1J(NH) and 2J(NH) in the formylhydrazides and of 1J(NH), 2J(NH) 3J(NH) in the N,N′-diformylhydrazines. The conformational dependence of 2J(CH) in formamide, reported in the literature, however, could not be confirmed.
Additional Material:
2 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1260280410
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