Experiment 8 Results and Discussion

Experiment 8 Results and Discussion - seemed to be...

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Results After performing the necessary steps to forming a triple bond (diphenylacetylene), and having to purify it, we determined our percent yield of diphenylacetylene to be 36%. This yield was below are expectations. This may be due to inaccurate measurements of our stilbene dibromide and diphenylacetylene. Our observed melting point was 51-53ºC, which is about 10ºC less than the literature melting point of diphenylacetylene. This slight difference can be due to impurities such as traces of ethanol, as well as traces of trans-stilbene dibromide. Conclusion Our reaction was successful despite our dissatisfaction in our percent yield. Our product
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Unformatted text preview: seemed to be reasonably pure with respect to its melting point. Questions 1. 1,2-dibromo-1,2-diphenylethane 2. The isomer would be achiral. This is because of the anti-stereochemistry of the H and Br. Stilbene dibromide is not a mirror image of itself any way you look at it. 3. The student would obtain the same product because the single bond allows free rotation. 4. Cyclohexene is a stable ring, therefore, it does not want to form a triple bond. This would cause more strain to the rind as a result of resonance....
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This note was uploaded on 07/19/2009 for the course CHEM 234-54 taught by Professor Morrison during the Spring '09 term at University of Georgia Athens.

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