Spectroscopic and quantum mechanical investigation of N,N'-bisarylmalonamides: solvent and structural effects

J Mol Model. 2014 Aug;20(8):2384. doi: 10.1007/s00894-014-2384-4. Epub 2014 Aug 14.

Abstract

The UV absorption spectra of ten N,N'-bisarylmalonamides have been recorded in the range 200-400 nm in a set of selected solvents. The solute-solvent interactions have been analyzed on the basis of the linear solvation energy relationship (LSER) concept proposed by Kamlet and Taft. The effects of substituents on the absorption spectra have been interpreted by correlating absorption frequencies with Hammett substituent constants. Furthermore, the experimental findings have been interpreted using the DFT CAM-B3LYP/6-311+G(d,p) method. Electronic energies have been calculated using the same method in combination with the implicit solvation model (conductor-like polarizable continuum model, CPCM) as well as with the explicit addition of two molecules of solvent.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amides / chemistry*
  • Electrons
  • Hydrogen Bonding
  • Models, Molecular*
  • Quantum Theory*
  • Regression Analysis
  • Solvents / chemistry*
  • Spectrophotometry, Ultraviolet
  • Thermodynamics

Substances

  • Amides
  • Solvents