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      Layered tungsten oxide-based organic-inorganic hybrid materials: an infrared and Raman study.

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          Abstract

          Tungsten oxide-organic layered hybrid materials have been studied by infrared and Raman spectroscopy and demonstrate a difference in bonding nature as the length of the interlayer organic "spacer" molecule is increased. Ethylenediamine-tungsten oxide clearly displays a lack of terminal -NH3(+) ammonium groups which appear in hybrids with longer organic molecules, thus indicating that the longer chains are bound by electrostatic interactions as well as or in place of the hydrogen bonding that must be present in the shorter chain ethylenediamine hybrids. The presence of organic molecules between the tungsten oxide layers, compared with the layered tungstic acid H2WO4, shows a decrease in the apical W=O bond strength, as might be expected from the aforementioned electrostatic interaction.

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          Author and article information

          Journal
          J Phys Chem B
          The journal of physical chemistry. B
          American Chemical Society (ACS)
          1520-6106
          1520-5207
          Mar 24 2005
          : 109
          : 11
          Affiliations
          [1 ] Victoria University of Wellington, P.O. Box 600, Wellington, New Zealand. b.ingham@irl.cri.nz
          Article
          10.1021/jp045066l
          16863150

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