Lab 21: The synthesis and characterization of transition metal complexes of trivalent cobalt

Lab 21 The - Lab 21 The synthesis and characterization of water-soluble transition metal complexes of trivalent cobalt Heather Wilson-White Chem

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Lab 21: The synthesis and characterization of water-soluble transition metal complexes of trivalent cobalt Heather Wilson-White 11/25/2007 Chem 1CL I NTRODUCTION In this experiment, our lab group synthesized the cis and trans isomers of the transition metal [Co(en) 2 Cl 2 ]Cl and observed the differences in coloration of the isomers due to their differing ligand field strengths. We also synthesized [Co(NH 3 ) 6 ]Cl 3 and [Co(NH 3 ) 5 Cl]Cl 2 and analyzed their differing absorbance spectrums due to the differing ligand field strengths. Throughout the experiments, we used procedure outlined by van Koppen (van Koppen, P. A. M. General Chemistry Laboratory Manual (UCSB). Copyright © 2007 Hayden-McNeil, Plymouth, MI. pp. 245-258.). D ATA Synthesis of [Co(NH 3 ) 6 ]Cl 3 When the solid salts CoCl 2 *6H 2 O and NH 4 Cl are dissolved into an aqueous solution, the solution is a purple color and no gas bubbles from the solution. When ammonium hydroxide and charcoal are added, the solution darkens due to the presence of charcoal,
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This lab report was uploaded on 04/09/2008 for the course CHEM 1CL taught by Professor Van koppen during the Fall '06 term at UCSB.

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Lab 21 The - Lab 21 The synthesis and characterization of water-soluble transition metal complexes of trivalent cobalt Heather Wilson-White Chem

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