Chemistry Homework Solutions
Problem
#78633

I need help determining compounds from 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. Three of the five sets of graphs for unknown compounds are attached.

(See attached files for full problem description)

Attached file(s):
Attachments
illustration3.pdf  View File
illustration4.pdf  View File
illustration5.pdf  View File

Attachment Content Summary (Note: view attachment at the above link before purchasing. Actual attachment content may vary slightly from that shown below.)

illustration3.pdf
Compound #:



15
Elemental Analysis: C, 81.06; H, 8.17
Mass Spec: M+ m/e= 148

IR 100
transmittance




50




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




d
d
s d
illustration4.pdf
Compound #:



24
Empirical Formula: C5H7
Mass Spec: M+ m/e= 134

IR 100
transmittance




50




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




2 lines
illustration5.pdf
Compound #:



16
Elemental Analysis: C, 68.21; H, 7.25
Mass Spec: M+ m/e= 194

IR 100
transmittance




50




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

t
d m



t
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