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Chemistry, 7/e
Raymond Chang, Williams College
Transition Metal Chemistry and Coordination Compounds

Internet Exercises

Tutorial on coordination chemistry
(http://wwwchem.uwimona.edu.jm:1104/courses/comligs.html)

  1. The University of the West Indies Mona Campus provides a tutorial on coordination chemistry. At http://wwwchem.uwimona.edu.jm:1104/courses/comligs.html, you will find 3-D structures of the complexes derived from common ligands in Chime format. Answer the following questions based on the examples given.
    1. First, take a look at potassium tetrachloroferrate(III).
      1. Explain the III in potassium tetrachloroferrate(III).
      2. How many oxidation states can iron exhibit?
      3. What kind of an element is iron?
      4. Write the electron configuration for Fe.
      5. Explain why iron has variable oxidation states.
    2. Now, study the image of hexapyridineruthenium(II) chloride.
      1. Which is the metal atom?
      2. Which is the donor atom, and why is it referred to as the "donor"?
      3. What is the coordination number of this particular compound?
      4. Fill in the blank: This is an example of a _______dentate ligand.
      5. Describe the interaction between a metal atom and a ligand.
      6. What geometric arrangement does this compound exhibit?
stereoisomerism and structural isomerism
(http://wwwchem.uwimona.edu.jm:1104/courses/IC10Kiso.html)

  1. Other topics in coordination chemistry are stereoisomerism and structural isomerism. Find out more about them at http://wwwchem.uwimona.edu.jm:1104/courses/IC10Kiso.html.
    1. Are the images of the cis- and trans- isomers of [Pt(NH3)2Cl2] superimposable?
    2. What kind of isomers are they?
    3. Predict whether their melting points will be similar.
    4. Suppose your instructor handed you a mixture of two isomers unknown to you, and the only information given to you was that the mixture was an equimolar combination. Using a polarimeter, you studied the effects it had on plane-polarized light, only to find that the two isomers showed no rotation. A friend of yours tells you that from the results, it has to be a racemic mixture. Is he right?








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