Structural and spectral characterization of two 1-phenyl-1,2-propanedione bis{N(4)-alkylthiosemicarbazones}
作者:A. Castiñeiras、E. Bermejo、L.J. Ackerman、H. Beraldo、J. Valdés-Martı́nez、S. Hernández-Ortega、D.X. West
DOI:10.1016/s0022-2860(99)00082-4
日期:1999.11
1-phenyl-1,2-propanedione bisN(4)-methyl- and N(4)-ethylthiosemicarbazone}, H(2)Pm4M and H(2)Pm4E, respectively, have been prepared, studied spectroscopically (H-1 NMR, ultraviolet and infrared) and their crystal structures solved. Intermoiety hydrogen bonding does not occur in H(2)Pm4M and H(2)Pm4E, in contrast to the analogous bisN(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. (C) 1999 Elsevier Science B.V. All rights reserved.