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Spectroscopic studies of aluminum and gallium complexes with oxalate and malonate in aqueous solution

Clausen, M.; Ohman, L. O.; Axe, K. and Persson, Per LU (2003) In Journal of Molecular Structure 648. p.225-235
Abstract
The local structures of Ga(III) in aqueous oxalate and malonate complexes were studied by means of Ga K-edge EXAFS spectroscopy. Irrespective of the number and type of coordinated ligands, the EXAFS results showed very regular first coordination shells consisting of six oxygen atoms. Scattering paths from more distant atoms revealed that both oxalate and malonate form mononuclear chelate structures where one oxygen from each carboxylate group binds to Ga(III). Again, very little variation in bond distances and no changes in coordination modes were detected as the number of ligands coordinated to Ga(III) was varied. Based on the very close resemblance of IR spectra of oxalate and malonate complexes of Al(III), and the corresponding... (More)
The local structures of Ga(III) in aqueous oxalate and malonate complexes were studied by means of Ga K-edge EXAFS spectroscopy. Irrespective of the number and type of coordinated ligands, the EXAFS results showed very regular first coordination shells consisting of six oxygen atoms. Scattering paths from more distant atoms revealed that both oxalate and malonate form mononuclear chelate structures where one oxygen from each carboxylate group binds to Ga(III). Again, very little variation in bond distances and no changes in coordination modes were detected as the number of ligands coordinated to Ga(III) was varied. Based on the very close resemblance of IR spectra of oxalate and malonate complexes of Al(III), and the corresponding complexes of Ga(III), it is believed that the local structures of the Al(III) complexes are similar to those of the Ga(III) complexes in terms of ligand coordination modes and distortions. This conclusion was corroborated by results from theoretical frequency calculations. (C) 2003 Elsevier Science B.V. All rights reserved. (Less)
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publishing date
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publication status
published
subject
in
Journal of Molecular Structure
volume
648
pages
225 - 235
publisher
Elsevier
external identifiers
  • scopus:0037467178
ISSN
0022-2860
DOI
language
English
LU publication?
no
id
1121b618-1fd4-4388-bd3c-c9e1f1f4d0c9 (old id 4332552)
date added to LUP
2014-03-04 09:41:52
date last changed
2018-05-29 12:07:08
@article{1121b618-1fd4-4388-bd3c-c9e1f1f4d0c9,
  abstract     = {The local structures of Ga(III) in aqueous oxalate and malonate complexes were studied by means of Ga K-edge EXAFS spectroscopy. Irrespective of the number and type of coordinated ligands, the EXAFS results showed very regular first coordination shells consisting of six oxygen atoms. Scattering paths from more distant atoms revealed that both oxalate and malonate form mononuclear chelate structures where one oxygen from each carboxylate group binds to Ga(III). Again, very little variation in bond distances and no changes in coordination modes were detected as the number of ligands coordinated to Ga(III) was varied. Based on the very close resemblance of IR spectra of oxalate and malonate complexes of Al(III), and the corresponding complexes of Ga(III), it is believed that the local structures of the Al(III) complexes are similar to those of the Ga(III) complexes in terms of ligand coordination modes and distortions. This conclusion was corroborated by results from theoretical frequency calculations. (C) 2003 Elsevier Science B.V. All rights reserved.},
  author       = {Clausen, M. and Ohman, L. O. and Axe, K. and Persson, Per},
  issn         = {0022-2860},
  language     = {eng},
  pages        = {225--235},
  publisher    = {Elsevier},
  series       = {Journal of Molecular Structure},
  title        = {Spectroscopic studies of aluminum and gallium complexes with oxalate and malonate in aqueous solution},
  url          = {http://dx.doi.org/},
  volume       = {648},
  year         = {2003},
}