Structural and spectral characterization of two 1-phenyl-1,2- propanedione bis{N(4)-alkylthiosemicarbazones}
Por:
Castiñeiras A., Bermejo E., Ackerman L.J., Beraldo H., Valdés-Martínez J., Hernández-Ortega S., West D.X.
Publicada:
1 ene 1999
Resumen:
1-phenyl-1,2-propanedione bis{N(4)-methyl- and {N(4)- ethylthiosemicarbazone}, H2Pm4M and H2Pm4E, respectively, have been prepared, studied spectroscopically (1H NMR, ultraviolet and infrared) and their crystal structures solved. Intermoiety hydrogen bonding does not occur in H2Pm4M and H2Pm4E, in contrast to the analogous bis {N(4)- thiosemicarbazones} prepared from 1-phenylglyoxal. The two thiosemicarbazone moieties are on the opposite side of the carbon-carbon backbone, but the N(4)Hs intramolecularly hydrogen bond to the imine nitrogen for each moiety.
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