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  Home > JCE Print > Journal of Chemical Education > Issues > 1998  > November  >
In the Laboratory
The Octahedral-Square-Planar Transition of Nickel Chelates
Lina Ben-Dor and Yizhak Marcus
The Hebrew University of Jerusalem, Department of Inorganic and Analytical Chemistry, Jerusalem 91904, ISRAEL
Cover
November 1998
Vol. 75 No. 11
p. 1458
Abstract
An experiment for an advanced inorganic chemistry laboratory is proposed that involves the study of the equilibrium between the (blue) octahedral and (yellow) square planar chelates of nickel(II) with tetraaza ligands in solution. The ligands employed are the linear triethylenetetramine and the cyclic cyclam. Changes in the ionic strength or the temperature of the solutions shift the equilibrium, which is followed spectrophotometrically.
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Detailed version of the laboratory experiment is available as a pdf file, which requires Acrobat Reader to view. The Microsoft Word document has also been compressed into both sit and zip files.
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*  Citation
 Ben-Dor, Lina; Marcus, Yizhak. J. Chem. Educ. 1998 75 1458.
*  Keywords
 inorganic chem, laboratory instruction, coordination chem, equilibrium, transition elements
*  History
 Created:
Last Updated:		 June 18, 1999
November 22, 2005
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