Structural assignment of monothiocarbonohydrazones by 1H NMR spectroscopy
Article first published online: 14 APR 2005
Copyright © 1984 Wiley Heyden Ltd.
Organic Magnetic Resonance
Volume 22, Issue 1, pages 6–10, January 1984
How to Cite
Rajendran, G. and Jain, S. R. (1984), Structural assignment of monothiocarbonohydrazones by 1H NMR spectroscopy. Org. Magn. Reson., 22: 6–10. doi: 10.1002/mrc.1270220103
- Issue published online: 14 APR 2005
- Article first published online: 14 APR 2005
- Manuscript Accepted: 5 JUN 1983
- Manuscript Received: 10 DEC 1982
Analysis of the 1H NMR spectra of several monothiocarbonohydrazones, some of them synthesized for the first time, shows that they exist as two structural isomers. Whereas, in general, the derivatives of aromatic aldehydes conform to a linear structure, the aliphatic carbonyl derivatives conform to heterocyclic or linear structures, depending on the size of the substituent groups. This dual behaviour is explained in terms of extended conjugation and steric hindrance.