ps4_1994

ps4_1994 - MIT OpenCourseWare http://ocw.mit.edu 5.80...

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Unformatted text preview: MIT OpenCourseWare http://ocw.mit.edu 5.80 Small-Molecule Spectroscopy and Dynamics Fall 2008 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms . MASSACHUSETTS INSTITUTE OF TECHNOLOGY Chemistry 5.76 Spring 1994 Problem Set #4 Questions 1-3 deal with the geometric and vibrational structure of water. All relevant information is given in the FG Treatment of H 2 O handout. 1. The microwave spectrum of H 2 O. (a) What kind of top is H 2 O? (b) Along which principal axis is the electric dipole moment aligned? (c) What are the selection rules for the pure rotation spectrum of H 2 O? (d) Compute the frequencies (in GHz) of all electric dipole allowed J = 4 4 and J = 5 4 transitions of H 2 O. (e) Is T 2 O a near prolate or a near oblate top? If it is near prolate, at what bond angle would T 2 O switch from near prolate to near oblate? (f) What would the selection rules be for the pure rotation spectrum of near oblate T 2 O?...
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ps4_1994 - MIT OpenCourseWare http://ocw.mit.edu 5.80...

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