Syntheses and structures of two new lithium-heptamolybdates |
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| Authors: | Savita S Khandolkar Christian Näther Wolfgang Bensch |
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| Institution: | 1. Department of Chemistry, Goa University, Panaji, India;2. Institut für Anorganische Chemie, Christian-Albrechts-Universit?t Kiel, Kiel, Germany |
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| Abstract: | The synthesis, crystal structures, IR, UV–vis, 7Li NMR spectra, electrochemical investigations, and conductivity studies of two new lithium-heptamolybdates, (NH4)4Li2(H2O)7]Mo7O24]·H2O (1) and (NH4)3Li3(H2O)4(μ6-Mo7O24)]·2H2O (2), are reported. In 1 the (NH4)+ and Li2(H2O)7]2+, cations are charge balanced by the heptamolybdate anion. In 2, the Mo7O24]6? anion is coordinated to three unique Li+ ions via a μ6-hexadentate-binding mode resulting in the formation of a two-dimensional (2-D) Li3(H2O)4(μ6-Mo7O24)]3? anionic complex, charge neutralized by three (NH4)+ ions. The cations, anions, and the lattice water molecules in 1 and 2 are linked by weak H-bonding interactions. |
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| Keywords: | Lithium heptamolybdate counter anion μ6-hexadentate ligand H-Bonding interactions |
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