Synthesis and characterization of multinuclear manganese-containing tungstosilicates

Inorg Chem. 2014 Jun 2;53(11):5663-73. doi: 10.1021/ic500425c. Epub 2014 May 19.

Abstract

The five manganese-containing, Keggin-based tungstosilicates [Mn(II)3(OH)3(H2O)3(A-α-SiW9O34)](7-) (1), [Mn(III)3(OH)3(H2O)3(A-α-SiW9O34)](4-) (2), [Mn(III)3(OH)3(H2O)3(A-β-SiW9O34)](4-) (3), [Mn(III)3Mn(IV)O3(CH3COO)3(A-α-SiW9O34)](6-) (4), and [Mn(III)3Mn(IV)O3(CH3COO)3(A-β-SiW9O34)](6-) (5) were synthesized in aqueous medium by interaction of [A-α-SiW9O34](10-) or [A-β-SiW9O34H](9-) with either MnCl2 (1) or [Mn(III)8Mn(IV)4O12(CH3COO)16(H2O)4] (2-5) under carefully adjusted reaction conditions. The obtained salts of these polyanions were analyzed in the solid state by single-crystal X-ray diffraction, IR spectroscopy, and thermogravimetric analysis. The salts of polyanions 1, 2, and 4 were further characterized in the solid state by magnetic studies, as well as in solution by electrochemistry.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Manganese / chemistry*
  • Models, Molecular
  • Molecular Structure
  • Silicates / chemical synthesis*
  • Silicates / chemistry
  • Tungsten Compounds / chemical synthesis*
  • Tungsten Compounds / chemistry

Substances

  • Silicates
  • Tungsten Compounds
  • Manganese