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TitleLayered tungsten oxide-based organic - Inorganic hybrid materials: An infrared and raman study
Publication TypeJournal Article
Year of Publication2005
AuthorsIngham, B., Chong S.V., and Tallon J.L.
JournalJournal of Physical Chemistry B
Pagination4936 - 4940
Date Published2005
ISSN15206106 (ISSN)
KeywordsBond strength, Dehydrogenation, Electrostatic interactions, Hydrogen bonds, Infrared spectroscopy, Organic molecules, Paraffins, Raman spectroscopy, Synthesis (chemical), Torsional oscillation, Tungsten compounds, X ray powder diffraction
AbstractTungsten 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=0 bond strength, as might be expected from the aforementioned electrostatic interaction. © 2005 American Chemical Society.

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