2 describe how an aim analysis partitions space and

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2. Describe how an AIM analysis partitions space, and how the partial charge on an atom in a molecule can be calculated using an AIM analysis. 3. Draw the best Lewis structure for carbon monoxide including formal charges. Explain why you do or do not think the formal charges would agree with charges calculated according to the method of problem 2. 4. What was the first structurally characterized aluminum(I) compound and how was its structure determined? 5. Explain how to calculate the average Al oxidation state in the aluminum cluster having the greatest number of “naked” aluminum atoms described to date. 6. Give an orbital analysis explaining why LAl, where L is the Nacnac ligand type, fails to react with alkynes. 7. The reaction Mes*PCl 2 + (DMP)PPMe 3 Æ Mes*PPMe 3 + (DMP)PCl 2 is catalyzed by PMe 3 . Draw a cycle to explain the catalysis. 8. In the phospha-Wittig reagent (DMP)PPMe 3 , the 31 P NMR signal for the two- coordinate phosphorus is found upfield of that for the four-coordinate phosphorus. Is the two-coordinate phosphorus electron-rich, or is it electron-deficient? Explain. 9. Predict both the products and the mechanism of reaction of (DMP)PPMe 3 with benzaldehyde. 10. Draw the hypothetical singlet phosphinidene (Me 2 N)P and assign to it a coordinate system with P at the origin. Assume C 2v point symmetry. a. Which of the Cartesian axes corresponds to δ 11 ? b. To what aspect of the phosphinidene electronic structure is δ 11 exquisitely sensitive? c. What type of experiment could be used to extract the value of δ 11 ? 5.05 - Principles of Inorganic Chemistry III - Spring 2005 Professor Christopher Cummins, Copyright 2005. MIT Department of Chemistry
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  • Spring '05
  • CHristopher
  • Chemistry, Carbon monoxide, Vinyl chloride, Professor Christopher Cummins, Principles of Inorganic Chemistry, MIT Department of Chemistry

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