Structural and spectral studies of thiosemicarbazones derived from 3-furaldehyde and 3-(2-furyl)prop-2-enal

Abstract : 3-Furaldehyde thiosemicarbazone (3FTSC) and 3-(2-furyl)prop-2-enal thiosemicarbazone (FATSC) have been prepared, their structures solved and IR, 1 H NMR spectra recorded. The thiosemicarbazone moiety in both compounds shows an E con®guration about C1±N2 and C2±N3. Intramolecular and intermolecular hydrogen bondings occur in both the molecules. The angles between the mean planes of the furanic ring and thiosemicarbazone moiety present a signi®cant difference in the two compounds. Moreover, the 1 H NMR and IR spectral studies of two compounds are quite similar.