The answer key and explaining video will be a bit

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Unformatted text preview: econd. (The answer key and explaining video will be a bit more detailed as appropriate.) a. For each, note if any “total eclipse” steric interactions exist (two non-hydrogens eclipsing) b. For each, note if any “gauche” steric interactions exist (two non-hydrogens gauche) CH 3 CH 3 7. H H H H H CH 3 H H CH 3 H H H H CH 3 H H H H H H CH 3 H H H H H H H H H H H H iPr H 3C H CH CH 3 3 H H H H 3C H H CH H3 CH 3 CH 3 13. iPr iPr CH 3 iPr H H H H CH 3 H 12. H H CH 3 CH 3 11. H H H H H 10. H CH 3 CH 3 CH 3 CH 3 9. H H CH 3 8. CH 3 H CH 3 H CH 3 H CH 3 Newman Projection Practice 3 D. Newman Projection Energy Diagrams. 14. Draw a qualitative energy diagram for CH3CH2CH2CH(CH3)2, relative to the bond between the two CH2 carbons. The Newman projections are drawn below, using “iPr” as an abbreviation for the isopropyl CH(CH3)2 group. Put “S” (for staggered) by any “staggered” conformation, and “E” (for eclipsed) by an eclipsed conformation. iPr CH 3 H H H H iPr H CH 3 H H H iPr iPr H H H H H CH 3 H H CH 3 iPr H H H 3C H iPr H 3C H H H iPr CH 3 H H H H H H H Relative Energy Highest Energy Lowest Energy 0º 60º 120º 180º 240º 300º 360º 15. Draw a qualitative energy diagram...
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This document was uploaded on 03/03/2014 for the course CHEM 341 at Minnesota State University Moorhead .

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