K 4Fe 4P 5O 20: A new mixed valence microporous compound with elliptical eight-ring channels

Zhangzhen He*, Weilong Zhang, Wendan Cheng, Atsushi Okazawa, Norimichi Kojima

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

A new small-pore compound K 4Fe 4P 5O 20 was obtained by conventional solid-state reaction in a closed crucible. The crystal structure is constructed by Fe 4P 5O 20 units forming chains along the c axis and elliptical eight-ring channels on the a-b plane in which K cations locate inside. Such structural characteristics seem to be quite similar to those seen in the natrolite family. However, Fe ions in K 4Fe 4P 5O 20 have trigonal-bipyramidal instead of common tetrahedral coordination. Furthermore, our experimental results combined from magnetic susceptibility and 57Fe Mössbauer spectrum measurements show mixed valence Fe 3+/Fe 2+ in the titled material. To the best of our knowledge, this is the first example that contains mixed valence iron ions in a so-called natrolite framework.

Original languageEnglish
Pages (from-to)7469-7471
Number of pages3
JournalInorganic Chemistry
Volume51
Issue number14
DOIs
Publication statusPublished - 2012 Jul 16
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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