D: DISCUSSION, 7 points inclucts raes ata Type your discussion after your abstra
ID: 1033907 • Letter: D
Question
D: DISCUSSION, 7 points inclucts raes ata Type your discussion after your abstract. In complete sentences discuss your characterization of your reaction products. USE DATA from your experiment whenever possible. First discuss how your experimental values and ranges for the melting points of fluorene and fluorenone helped to identify each product. Does your melting point data indicate your samples were pure? d discuss how spec dentification. Also ific frequencies in the IR spectrum of each isolated compound aided in address if the spectra indicated any impurity or cross contamination in Secon your samples. Do you see unexpected bands in a spectrum? 14 13 13 Third, CNMR can be used to characterize reactions. Discuss how the CNMR of fluorene spectrum and fluorenone would agree and how they would differ. Cite specific carbons (numbered) and their expected chemical shifts in CNMR spectrum of each compound. 12 12 10 11 10 Fluorene Fluorenone s trExplanation / Answer
First part : Melting point analysis showed the melting points found for the expeirmentally prepared fluroenone is close to the literature melting point. therefore we have prepared pure compound. Melting point is a physical constant and is used to identify the purity and identification of the compound. Same melting point means same compound.
Second part : IR analysis gave a peak at 1712 cm-1 in case of fluorenone for C=O stretch which was absent in flurorene and confirms the product is formed.
Third part : 13C analysis would show 194 ppm peak for the C=O carbon which was absent in fluorene starting material. Also the peak at around 38 ppm in case of fluorene for the -CH2- group disappears once fluorenone is formed. This peak at 38 ppm is absent in product fluorenone as carbon is oxidized to C=O functionality.
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