Distribution of complex ions between aqeuous and organic layers

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SUMMARY

The discussion centers on the distribution behavior of complex ions in aqueous and organic layers, specifically comparing the Fe3+ complex ion with five water ligands and one thiocyanate to the Co2+ complex ion with four thiocyanate ions. The Fe3+ complex, known for its blood-red color, demonstrates equal distribution between both layers, while the Co2+ complex remains exclusively in the aqueous layer. This difference is attributed to the nature of the organic solvent used, which influences the solubility and stability of the complexes.

PREREQUISITES
  • Understanding of coordination chemistry and complex ions
  • Knowledge of ligand types, specifically thiocyanate
  • Familiarity with solubility principles in organic and aqueous solvents
  • Basic concepts of solvent polarity and its effect on ion distribution
NEXT STEPS
  • Research the properties of thiocyanate as a ligand in coordination complexes
  • Study the solubility rules for transition metal complexes in different solvents
  • Explore the effects of solvent polarity on the distribution of ions
  • Investigate the stability of metal-ligand complexes in varying chemical environments
USEFUL FOR

Chemistry students, researchers in coordination chemistry, and professionals working with metal complexes in various solvents will benefit from this discussion.

Moogie
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Hi

I was wondering if anyone might be able to offer an explanation why the Fe3+ complex ion containing 5 water ligands and 1 thiocynanate (the classic blood red complex) appears to be able to distribute equally between an organic and an aqueous layer but a cobalt 2+ complex ion containing 4 thiocynanate ions resides exclusively in the aqueous layer

Thanks
 
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Moogie said:
Hi

I was wondering if anyone might be able to offer an explanation why the Fe3+ complex ion containing 5 water ligands and 1 thiocynanate (the classic blood red complex) appears to be able to distribute equally between an organic and an aqueous layer but a cobalt 2+ complex ion containing 4 thiocynanate ions resides exclusively in the aqueous layer

Thanks

Depends on the organic layer.
 

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