High Complexation Ability of Thiacalixarene with Transition Metal Ions. the Effects of Replacing Methylene Bridges of Tetra(p-t-butyl)calix[4]arenetetrol by Epithio Groups

Nobuhiko Iki, Naoya Morohashi, Fumitaka Narumi, Sotaro Miyano

Research output: Contribution to journalArticlepeer-review

164 Citations (Scopus)

Abstract

The ability of tetra(p-t-butyl)tetrathiacalix[4]arenetetrol (TCA, H4L), a cyclic tetramer of p-(t-butyl)phenol bridged with four epithio groups, to bind metal ions was investigated via a solvent extraction study. Although tetra(p-t-butyl)calix[4]arenetetrol (CA) has very poor affinity for transition metal ions (M2+), TCA is an excellent extradant of these metal ions. The chemical formulae of the extracted TCA metal complexes were found by slope analysis to be neutral 1:1 complexes [MH2L]. The origin of the high affinity of TCA for transition metal ions is discussed, in which it is suggested that ligation of the epithio group is important as evidenced by an NMR study of the [ZnH2L] complex.

Original languageEnglish
Pages (from-to)1597-1603
Number of pages7
JournalBulletin of the Chemical Society of Japan
Volume71
Issue number7
DOIs
Publication statusPublished - 1998 Jul

ASJC Scopus subject areas

  • Chemistry(all)

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