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  Home > JCE Print > Journal of Chemical Education > Issues > 2002  > April  >
In the Laboratory
Experiments with Tris(ethylenediamine)cobalt(III) Compounds: 59Co NMR and the Resolution of Enantiomeric [Co(en)3] 3+ Ion and Analysis by Formation of Diastereomeric Ion Pairs
L. L. Borer, J. G. Russell, and R. E. Settlage
Department of Chemistry, California State University, Sacramento, Sacramento, CA 95819-6057

R. G. Bryant
Department of Chemistry, University of Virginia, Charlottesville, VA 22901
Cover
April 2002
Vol. 79 No. 4
p. 494
Abstract
Cobalt(III) complexes have been used in the undergraduate inorganic laboratory to demonstrate various techniques in coordination chemistry. This report describes an experiment involving the synthesis and resolution of enantiomeric tris(ethylenediamine)cobalt(III) compounds followed by the analysis of enantiomeric purity by optical rotation and 59Co NMR spectroscopy through the formation of diastereomeric ion pairs.
Supplement
Several cobalt spectra FID files and instructions for students on conducting the experiment and preparing the lab report are available.
*  Contents JCE2002p0494Ws folder containing spectra FID files and JCE2002p0494W.doc (Microsoft Word)
*  Download
JCE2002p0494W.pdf

JCE2002p0494W.zip

JCE2002p0494W.sit
More Information
*  Citation
 Borer, L. L.; Russell, J. G.; Settlage, R. E.; Bryant, R. G. J. Chem. Educ. 2002 79 494.
*  Keywords
 Chirality / Optical Isomers; Cobalt; Coordination Chemistry; Inorganic Chemistry; Laboratory Instruction; NMR Spectrometry
*  History
 Created:
Last Updated:		 March 1, 2002
March 16, 2005
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