Inorganic cryptand: Size-selective strong metallic cation encapsulation by a disilicoicosatungstate (Si2W20) polyoxometalate

Akihiro Yoshida, Yoshinao Nakagawa, Kazuhiro Uehara, Shiro Hikichi, Noritaka Mizuno

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

A select club: The polyoxometalate [(γ-SiW10O 32)2(μ-O)4]8- (18-) has a cavity that can sizeselectively encapsulate the ions Pb2+, Sr2+, Na+, Ag+, K+, and Rb + (see picture, light blue; Si hidden, W gray, O red). Larger Ba 2+ and Cs+ ions (pink) are not encapsulated by 1. The molecular structures of [Mn+∪1](8-n)- (M n+=Pb2+, Sr2+, Ag+, Ba2+) were characterized by X-ray crystallography.

Original languageEnglish
Pages (from-to)7055-7058
Number of pages4
JournalAngewandte Chemie - International Edition
Volume48
Issue number38
DOIs
Publication statusPublished - 2009 Sep 7
Externally publishedYes

Keywords

  • Cryptands
  • Encapsulation
  • Polyoxometalates
  • Size selectivity
  • Tungsten

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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