Synthesis, structure, and extraction properties of paco-calix[4]arene crown-6 ethers

Richard A. Sachleben, Jeffrey C. Bryan, Goutam Das, Tanneguy Descazeaud, Yunfu Sun, Bruce A. Moyer

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

anti-25,27-Bis-n-octyloxycalix[4]arene, the paco-isomer of 25,27-bis-n-octyloxycalix[4]arene crown-6 ether, and the paco- and 1,3-alt isomers of 25,27-bis-n-octyloxycalix[4]arene t-butylbenzocrown-6 ether were prepared. The crystal structures of anti-25,27-bis-n-octyloxycalix[4]arene, paco-25,27-bis-n-octyloxycalix[4]arene crown-6, and 1,3-alt-25,27-bis-n-octyloxycalix[4]arene crown-6 were determined and the solution structure of anti-25,27-bis-n-octyloxycalix[4]arene was studied by 2D- and VT-NMR. The extraction of alkali metal nitrates by the paco-25,27-bis-n-octyloxycalix[4]arene crown-6 and t-butylbenzocrown-6 ethers in 1,2-dichloroethane was compared to that of the corresponding 1,3-alt isomers.

Original languageEnglish
Pages (from-to)55-64
Number of pages10
JournalJournal of Inclusion Phenomena
Volume43
Issue number1-2
DOIs
StatePublished - 2002

Funding

This research was sponsored by the Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences, U.S. Department of Energy, under contract DE-AC05-00OR22725 with Oak Ridge National Laboratory, managed and operated by UT-Battelle, LLC. The participation of GD was made possible through an appointment to the ORNL Postgraduate Research Program administered by the Oak Ridge Institute for Science and Education, Oak Ridge Associated Universities (ORISE-ORAU).

Keywords

  • Calyx[4]arene
  • Cesium
  • Crown ether
  • Crystal structure
  • NMR
  • Solvent extraction

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