Gen Chem - Isomers in a complex ion

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SUMMARY

The discussion centers on the optical isomerism of the complex ion [Co(NH3)4F2]+. It is established that this complex can exhibit cis/trans isomerism due to the arrangement of ligands around the cobalt center. However, the presence of optical isomers depends on whether the mirror images of the complex can be superimposed. In this case, the configuration of the NH3 ligands and the fluorine atoms determines the possibility of optical isomerism, which is not present in this specific arrangement.

PREREQUISITES
  • Understanding of coordination chemistry
  • Familiarity with optical isomerism concepts
  • Knowledge of cis/trans isomerism
  • Basic skills in drawing molecular structures
NEXT STEPS
  • Study the principles of coordination chemistry and ligand arrangements
  • Learn about optical isomerism in coordination compounds
  • Research the differences between cis/trans and optical isomers
  • Practice drawing and visualizing complex ions with different ligand configurations
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Chemistry students, educators, and professionals interested in coordination chemistry and isomerism, particularly those focusing on complex ions and their properties.

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How can you know if a complex ion has an optical isomer or not? I understand that it's when the mirror image can't be superimposed but am having trouble recognizing it. For example, take
[Co(NH3)4F2]+. Does this have an optical isomer or just cis/trans?
 
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Try to draw it.
 
right, I did that. but I'm not sure if the NH3s are fixed or if they can move around etc.
I have:
NH3
l
NH3 - Co - NH3
l
NH3

And one F coming out of the screen and the other in the back. So I think it has cis/trans, but I'm not sure about optical.

EDIT: the picture isn't coming out right but the metal has 4 NH3 ligands on surrounding it.
 

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