Spectroscopic identification worksheet - Tagged
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Feb 20, 2024
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Spectroscopic Identification of an Unknown Assignment
Directions: Complete the following tasks using data that you collected in the experiment. This assignment must be completed as a Word document or PDF and submitted via upload to Canvas by the due date.
1.
Identify the unknown that you analyzed. (5 points)
Unknown number: Proposed structure of unknown:
2.
Justify your assignments by indicating the 1
H NMR chemical shift, integration values, and splitting patterns for each group of hydrogens in your proposed ester structure by using the table below. Not all of the rows on the table need to be used (7 points)
Proposed structure of the unknown chemically unique hydrogens labeled:
Complete the following table (use as many rows as necessary): H Group (as labeled on structure above)
Number of H’s in group
Chemical shift (
d
)
Splitting pattern
3.
Identify key peaks in the IR spectrum that indicate the evidence of key functional groups from your proposed ester structure. Not all rows need to be used. (5 points)
4.
Attach images of your IR and NMR spectra. You can either embed them in this Word document or submit them as separate files on Canvas. (3 points)
IR absorbance (cm -1
)
Functional group indicated
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*See the second blue image for help.
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