Chem 442 Homework Set #10 DUE: Wednesday, November 19, 2008 1) McQ&S, 10-18 2) McQ&S, 10-20 3) McQ&S, 10-23 4) The lowest energy electronic transitions in ethene (C2H4) and benzene (C6H6) occur at 28,700 and 29,510 cm-1, respectively. Using Hückel theory, determine the value of β(in cm-1) for both molecules (assuming that the lowest energy electronic transition in each molecule occurs between the highest occupied and lowest unoccupied πorbital). How well did Hückel theory work, i.e., are your two values for βsimilar? 5) Using the energy formula expression in problem 10-43, calculate the lowest energy electronic transition in 1,3-butadiene and 1,3,5-hexatriene using the
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This note was uploaded on 02/12/2011 for the course CHEMISTRY 442 taught by Professor Lizzy during the Spring '10 term at Hanoi University of Technology.