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.
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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|Item Type:||Journal Article|
|Keywords:||Raman spectroscopy; high-pressure; hydrotalcites; dicarboxylates; structure|
|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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