Ab initio calculations of electronic interactions in inclusion complexes of calix- and thiacalix[n]arenes and block s cations

Joaquín Barroso-Flores, Ioan Silaghi-Dumitrescu, Petronela M. Petrar, Sándor Kunsági-Máté

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Ab initio calculations at the HF/6-31G(d) level of theory were performed on a series of thiacalix[4]arenes and calix[6]arenes in presence and in absence of monovalent (Li+, Na+ and Cs+) and divalent cations (Ca2+ and Ba2+) respectively, in order to evaluate their particular bonding properties as host systems towards electrically charged species. NBO, as well as NBO deletion calculations were undertaken to evaluate the energy difference in the circular hydrogen bonding at the lower rim once an ion was placed inside the cavity. Disruption of this H-bonded system is dependent on the position of the ion within the guest and not on its ionic ratio. The basis set superposition error and the NBO deletion energy between the host and guest species were calculated in order to assess the interaction energy between them.

Original languageEnglish
Pages (from-to)39-46
Number of pages8
JournalJournal of Inclusion Phenomena and Macrocyclic Chemistry
Volume75
Issue number1-2
DOIs
Publication statusPublished - Feb 2013

Keywords

  • Ab initio calculations
  • Calixarenes
  • Host-guest systems
  • Molecular recognition agents

ASJC Scopus subject areas

  • Food Science
  • Chemistry(all)
  • Condensed Matter Physics

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