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Group+Theory+Problem+Set

# Group+Theory+Problem+Set -...

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Unformatted text preview: Group Theory Problem Set  1.  With organic structures, the bonds are continually rotating which leads to two  conformers of a given structure. The conformer with the atoms farther apart is the staggered  conformation. The conformer with the atoms in an eclipsed conformation has the greatest  energy.  b Cl Cl Cl Cl Cl Cl Cl a Cl Cl Cl Cl Cl Eclipsed Staggered b a Cl Cl Cl Cl Cl Cl   The circular form is a Newman projection. The chlorine atoms (a) and (b) are indicated to  provide a prospective regarding how to draw these structures.  a. b. c. d. e. Draw a Newman projection for the eclipsed conformation.  Illustrate the improper rotation for the eclipsed conformation. Specifically label the  rotation (i.e. S3, S4, etc.)  Illustrate the improper rotation for the staggered conformation.  What is the point group for the eclipsed conformation?  The eclipsed conformation does not have a center of inversion (S2), but the  staggered conformation does. Illustrate this.    2.  A molecule has a D3h point group is it polar? Explain your reasoning.  3.  What is the improper rotation observed in carbon monoxide?  4.  Finish the last problem on the other problem set (problem 6). The answer key for NHF2  is incorrect (the answer should be Cs).      ...
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