Mehta-Ashay-project2H

Mehta-Ashay-project2H - Ashay Mehta Honors Organic...

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Ashay Mehta Honors Organic Chemistry I Chem 243H Fall 2009 Due Date: 12/14/09 [1.1.1] Bicyclopentane Atoms Distance (Amperes) Atoms Bond Angles (Degrees) C1 to C2 1.574 C1 to C2 to C3 74.97 C1 to C3 1.916 C1 to C2 to C4 46.59 C1 to C4 1.574 C1 to C2 to C5 46.59 C1 to C5 1.574 C1 to C3 to C4 52.52 C2 to C3 1.574 C1 to C3 to C5 52.52 C2 to C4 2.163 C1 to C4 to C5 46.59 C2 to C5 2.163 C2 to C3 to C4 86.82 C3 to C4 1.574 C2 to C3 to C5 86.82 C3 to C5 1.574 C2 to C1 to C3 52.52 C4 to C5 2.163 C2 to C4 to C5 60.00 C4 to C1 to C2 86.82 In the bicyclopentane structure, when looking at the electrostatic potential map, the bridge carbons are the most negative and the bridgehead carbons are most positive. So, basically, more negativity is gained as we move closer to the bridge carbon starting with the bridgeheads. Also, each bridgehead carbon has two hydrogen each and between those two atoms there is some negativity due to repulsion forces. There are three main distances. They are between the bridgehead carbons, between the various methyl groups and between the bridgehead carbon and methyl group. When the distance is stretched, the interactions among the three methyl groups increase and also increases the distance between the two bridgehead carbon atoms which decreases their relative repulsion. In the same manner, compressing the distance will decrease the repulsion between the three
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Mehta-Ashay-project2H - Ashay Mehta Honors Organic...

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