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High-pressure Raman spectroscopic and other structural studies of hydrotalcites containing intercalated dicarboxylic acid anions

Wright , Josh, Barsan, Mirela M., Butler, Ian S., Gilson, Denis F. R., Adebajo, Moses O., & Frost, Ray L. (2011) High-pressure Raman spectroscopic and other structural studies of hydrotalcites containing intercalated dicarboxylic acid anions. Journal of Raman Spectroscopy, 42(7), pp. 1562-1566.

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Abstract

The results of pressure-tuning Raman spectroscopic, X-ray powder diffraction and solid-state 13C-NMR studies of selected dicarboxylate anions intercalated in a Mg-Al layered double hydroxide (talcite) lattice are reported. The pressure dependences of the vibrational modes are linear for pressures up to 4.6 GPa indicating that no phase transitions occur. The interlayer spacings show that the oxalate, malonate and succinate dianions are oriented perpendicular to the layers, but the glutarate and adipate are tilted. The solid-state 13C-NMR spectra of these materials show full chemical shift anisotropy and, therefore, the anions are not mobile at room temperature.

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ID Code: 42557
Item Type: Journal Article
Keywords: Raman spectroscopy; high-pressure; hydrotalcites; dicarboxylates; structure
DOI: 10.1002/jrs.2881
ISSN: 0377-0486
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Structural Chemistry and Spectroscopy (030606)
Divisions: Past > Schools > Chemistry
Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2011 Wiley
Copyright Statement: The definitive version is available at www3.interscience.wiley.com
Deposited On: 13 Jul 2011 11:26
Last Modified: 14 Jul 2011 14:14

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