Multinuclear cobalt(II)-containing heteropolytungstates: structure, magnetism, and electrochemistry

Inorg Chem. 2014 May 19;53(10):5179-88. doi: 10.1021/ic500298u. Epub 2014 May 2.

Abstract

Interaction of the trilacunary Keggin polyanions [A-α-XW9O34](10-) (X = Si(IV), Ge(IV)) with Co(II) and phosphate ions in aqueous, basic media and under mild heating leads to the formation of the tetrameric, Co16-containing heteropolytungstates [{Co4(OH)3PO4}4(A-α-XW9O34)4](32-) (X = Si(IV), Ge(IV)). Both polyanions were characterized in the solid state by single-crystal X-ray diffraction, IR spectroscopy, and thermogravimetric and elemental analyses. Furthermore, the electrochemical and magnetic properties of these isostructural polyanions were investigated.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cobalt / chemistry*
  • Crystallography, X-Ray
  • Electrochemical Techniques*
  • Magnetic Phenomena
  • Models, Molecular
  • Molecular Structure
  • Tungsten Compounds / chemistry*

Substances

  • Tungsten Compounds
  • polyoxometalate I
  • Cobalt