Lower rim 2-methylthioethoxy substituted calix[4]arenes as shape selective complexants for mercury and silver

Alexander T. Yordanov, Bruce R. Whittlesey, D. Max Roundhill

Research output: Contribution to journalArticle

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Abstract

The compounds 5, 11, 17, 23-tert-butyl-25, 26, 27, 28-(2-methylthioethoxy)calix[4]arene 1 and 25, 26, 27, 28-(2-methylthioethoxy)calix[4]arene 2 have been synthesized from their corresponding 2-bromoethoxy derivatives. The crystal structure of 2 shows that the molecule has a flattened cone conformation. For the extraction of heavy metals from water into chloroform 1 and 2 show similar effectiveness for SnCI-3, PdCI2-4, PtCI2-4 and AuCI-4, but for Hg2+ and Ag+, 2 is a better extractant than 1. This difference is discussed in terms of the relative hydrophobicities and structures of the two compounds.

Original languageEnglish
Pages (from-to)13-15
Number of pages3
JournalSupramolecular Chemistry
Volume9
Issue number1
DOIs
StatePublished - 1998

Keywords

  • Calix[4]arene
  • Mercury
  • Silver

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