• Coordination of lanthanide cation to an Anderson type polyoxometalate anion leads to isomorphous metal-oxide based one-dimensional inorganic solids: Synthesis, crystal structure and spectroscopy

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      https://www.ias.ac.in/article/fulltext/jcsc/126/05/1525-1533

    • Keywords

       

      Anderson type polyoxometalates; lanthanides; one-dimensional inorganic polymers; isomorphous solids; spectroscopy.

    • Abstract

       

      One-dimensional isomorphous inorganic polymers containing Anderson type heteropoly anion as a basic building unit, namely [La(H2O)7Cr(OH)6Mo6O18]$_n$·4nH2O (1), [Gd(H2O)7Cr(OH)6Mo6O18]$_n$·4nH2O (2), [Gd(H2O)7Al(OH)6Mo6O18]$_n$·4nH2O (3), and [Eu(H2O)7Al(OH)6Mo6O18]$_n$·4nH2O (4) have been synthesized and studied by the powdered X-ray diffraction, TGA, IR, electronic and ESR spectroscopy, and unambiguously by single crystal X-ray crystallography. Isomorphous compounds 1-4 are crystallized in orthorhombic system with $Pca2_1$ space group. The crystal structure analysis reveals a one-dimensional extended chain in which the Anderson type heteropolyanion, acting as the building unit, is linked by rare earth metal ions in a zig-zag fashion. In the crystal structure, all types of oxygens of the heteropolyanion, lattice waters, lanthanum coordinated waters are extensively involved in O—H…O hydrogen bonding interactions. Compounds are additionally characterized by UV-visible and ESR spectroscopy.

    • Author Affiliations

       

      Vaddypally Shivaiah1 Tanmay Chatterjee1 Samar K Das1

      1. School of Chemistry, University of Hyderabad, Hyderabad 500 046, India
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