exam_1 - MIT OpenCourseWare http:/ocw.mit.edu 5.04...

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MIT OpenCourseWare http://ocw.mit.edu 5.04 Principles of Inorganic Chemistry II Fall 2008 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms .
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Chemistry 5.04 (F08) Exam 1 100 points total 1. ( 20 pts ) Below are vibrations and orbitals of molecules that transform according to irreducible representations of their given point groups. Note: no derivations are needed to answer this problem. a. ( 10 pts ) Five bending modes of XeF 4 2- are shown below. Assign the modes to their appropriate irreducible representations. b. ( 10 pts ) Olefins can bind to metal centers. Consider the simplets homoleptic complex, the bis(ethylene) complex. Ethylene binds to a metal through its p π -orbitals. The four orbital symmetries appropriate for ligand binding to the metal are: A 1 , B 2 and E. Below are shown the p-orbital contours for four orbitals. Color the p-orbitals to give the proper orbital symmetries. Label each of the completed diagrams with its irreducible representation M M M M M 12 3 4
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2. ( 20 pts ) Show that the point groups C 3h and S 3 are equivalent. You may use a stereographic projection to answer this problem.
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3.
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This note was uploaded on 11/27/2011 for the course CHEMICAL E 20.410j taught by Professor Rogerd.kamm during the Spring '03 term at MIT.

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exam_1 - MIT OpenCourseWare http:/ocw.mit.edu 5.04...

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