Effect of ligand on the redox reactions of thallium metal clusters

Effect of ligand on the redox reactions of thallium metal clusters Pulse radiolysis of an aqueous solution of mono-valent thallium ion and mixed solutions of Tl+/Ag+ in the presence of various amino polycarboxylic acids such as trans-1,2-diaminocyclohexane-N,N,N′,N′-tetraacetic acid (DCTA), diethylenetriaminepentaacetic acid (DTPA), N-(2-hydroxyethyl)ethylenediaminetriacetic acid (HEDTA) and triethylenetetraminehexaacetic acid (TTHA) has been carried out. Abnormal valence states of Tl ions were generated. It is concluded that DCTA, DTPA, HEDTA and TTHA decrease the redox potential of Tl ions in aqueous solutions. It was observed that the electron transfer from complexed Tl 2 + to Ag+ varied in the range 7.5 × 108 to 1.0 × 109, depending on the type of complexing ligand. Electron transfer from Tl 2 + to Ag+ lead to the formation of silver atoms, which agglomerate further to form silver colloid. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Effect of ligand on the redox reactions of thallium metal clusters

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Publisher
Springer Netherlands
Copyright
Copyright © 2009 by Springer Science+Business Media B.V.
Subject
Chemistry; Inorganic Chemistry ; Physical Chemistry ; Catalysis
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-008-0002-8
Publisher site
See Article on Publisher Site

Abstract

Pulse radiolysis of an aqueous solution of mono-valent thallium ion and mixed solutions of Tl+/Ag+ in the presence of various amino polycarboxylic acids such as trans-1,2-diaminocyclohexane-N,N,N′,N′-tetraacetic acid (DCTA), diethylenetriaminepentaacetic acid (DTPA), N-(2-hydroxyethyl)ethylenediaminetriacetic acid (HEDTA) and triethylenetetraminehexaacetic acid (TTHA) has been carried out. Abnormal valence states of Tl ions were generated. It is concluded that DCTA, DTPA, HEDTA and TTHA decrease the redox potential of Tl ions in aqueous solutions. It was observed that the electron transfer from complexed Tl 2 + to Ag+ varied in the range 7.5 × 108 to 1.0 × 109, depending on the type of complexing ligand. Electron transfer from Tl 2 + to Ag+ lead to the formation of silver atoms, which agglomerate further to form silver colloid.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Jan 20, 2009

References

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