Solvent influence on the rotational isomerism in terephthalaldehyde

Aleksandra Konopacka, Joanna Pająk, Aneta Jezierska, Jarosław Panek, Riet Ramaekers, Guido Maes, Zbigniew Pawełka

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Experimental and theoretical studies were carried out in order to investigate the rotational isomerism of terephthalaldehyde. The dipole moment measurements and infrared spectroscopy in Ar matrix and using various solvents were performed experimentally. In order to supplement the experimental study, both static and dynamical theoretical calculations were performed. IR spectra and potential energy distribution (PED) were calculated for both cis and trans isomers of terephthalaldehyde in gas phase using B3LYP/6-31G(d,p) level of theory. Further calculations consisted of conformational analysis were performed in order to estimate the rotational barrier and relative stabilities of isomers. The DFT theory with B3LYP functional and four double-zeta and triple-zeta basis sets served as framework for this part of calculations. Semiempirical AM1 and PM3 methods were also used for gas-phase modeling. Molecular dynamics using MM3 force field was applied to study the preferences of solvent molecules' orientation around the studied molecule. Additionally, the effect of solvent polarity on the Gibbs energy of the trans ⇌ cis equilibrium was analyzed in terms of the continuum dielectric medium models.

Original languageEnglish
Pages (from-to)177-188
Number of pages12
JournalStructural Chemistry
Issue number2
Publication statusPublished - Mar 2006
Externally publishedYes


  • Dipole moments
  • Infrared spectra
  • Molecular dynamics
  • Rotational isomerism
  • Solvent effects

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry


Dive into the research topics of 'Solvent influence on the rotational isomerism in terephthalaldehyde'. Together they form a unique fingerprint.

Cite this