Chemistry Homework Solutions
Problem
#78632

Help Identifying Structure of compound for IR Spectroscopy Graphs

I have to answer questions about things like SODAR and chemical formula using IR Spectroscopy, Mass Spectroscopy, C NMR, and H NMR graphs for five unknown compounds. In order for me to answer the questions, I first need to determine which compound the graphs are describing. I know how to determine SODAR and chemical formulas, but I need help identifying the structure of the compounds using the graphs. Two of the five sets of graphs for unknown compounds are attached.

(See attached files for full problem description)

Attached file(s):
Attachments
illustration1.pdf  View File
illustration2.pdf  View File

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illustration1.pdf
Compound #:



4
Elemental Analysis: C, 68.57; H, 8.56
Trans-2-butenal
IR 100
Mass Spec
transmittance




50




0
4000 3000 2000 1500 1000 500
Wavenumber / cm-1
13 1
C NMR H NMR
90 MHz




d
d



m m
illustration2.pdf
Compound #:



7
Elemental Analysis: C, 74.32; H,14.80; N, 10.87



IR 100
Mass Spec
transmittance




50




0
4000 3000 2000 1500 1000 500
Wavenumber / cm-1
13 1
C NMR H NMR
90 MHz


d and t
overlapping


sep
q

2 overlapping multiplets
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