A Sandwich Complex of Bismuth Cation and Mono-Lacunary α-Keggin-Type Phosphotungstate: Preparation and Structural Characterisation

Muh Nur Khoiru Wihadi, Akio Hayashi, Katsuya Ichihashi, Hiromi Ota, Sadafumi Nishihara, Katsuya Inoue, Nao Tsunoji, Tsuneji Sano, Masahiro Sadakane

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Abstract

We report the first Peacock–Weakley type complexes composed of mono-lacunary Keggin-type phosphotungstate, [α-PW11O39]7–, and Bi3+. The self-assembly reaction between the Keggin-type phosphotungstate and Bi3+ in aqueous solution produced Peacock–Weakley type 2:1 ([(PW11O39)2Bi]11–, 1) and 1:1 ([PW11O39Bi]4–, 2) complexes depending on the mixing ratio of [α-PW11O39]7– and Bi3+. Studies of both complexes in solution were conducted by different NMR techniques including 31P and 183W analyses. Complex 1 was successfully isolated as both tetramethyl ammonium (1a) and potassium (1b) salt, and characterized by single-crystal X-ray diffraction, IR spectroscopy and elemental analysis. The sandwich structure of 1a and 1b was determined to be constructed by eight Bi–O bonds with two [α-PW11O39]7– units.

Original languageEnglish
JournalEuropean Journal of Inorganic Chemistry
DOIs
Publication statusAccepted/In press - Jan 1 2018

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Keywords

  • Bismuth
  • Keggin structure
  • Polyoxometalates
  • Sandwich complexes
  • Self-assembly

ASJC Scopus subject areas

  • Inorganic Chemistry

Cite this

Wihadi, M. N. K., Hayashi, A., Ichihashi, K., Ota, H., Nishihara, S., Inoue, K., Tsunoji, N., Sano, T., & Sadakane, M. (Accepted/In press). A Sandwich Complex of Bismuth Cation and Mono-Lacunary α-Keggin-Type Phosphotungstate: Preparation and Structural Characterisation. European Journal of Inorganic Chemistry. https://doi.org/10.1002/ejic.201800541