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Resources
Syllabus
Labs:
- IR (due 4/13)
- NMR
(due 4/27)
Instrument Guides:
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Announcements:
If necessary, you may turn in your lab report as late as Monday 3:30 without penalty. I would advise that you still turn it in today.
Dr. Gebauer will meet you in Sci-II room 278 on Monday.
The Midterm is graded. The average is 77. Please stop by on Friday or Monday to get it back. (I'm out of town May 1-9)
For your NMR Lab you will use class results. Please make sure you use these results to express your final answers using the proper number of significant figures.
| Chemical/peak |
δ, chemical shift (ppm) |
1J, coupling constant (Hz) |
| 4-ethynyltoluene |
|
|
| aromatic C |
138.6, 138.6885, 139.296, 138.604, 138.6885
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N/A
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| aromatic CH |
131.81, 131.8285, 132.487, 131.812, 131.8456
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157.227, 168.93, 158.08, 158.08, 158.08
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| aromatic CH |
128.89, 128.891, 129.5495, 128.874, 128.8910
|
150.391, 151.25, 150.39, 152.95, 153.39
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| aromatic C |
118.96, 118.9747, 119.6501, 118.941, 118.9238
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N/A
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| alkyne C |
83.71, 83.7241, 84.3826, 83.707, 83.7241
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N/A
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| alkyne CH |
76.52, 76.5076, 76.5585, 76.525, 76.5076
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251.2, 251.22, 250.36, 252.93, 125.61
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| CH3 |
21.24, 21.2036, 21.896, 21.221, 21.1357
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126.5, 126.46, 127.32, 128.17, 127.32
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| " |
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124.7, 126.47, 126.46, 124.76, 126.47
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| " |
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128.2, 129.88, 127.27, 121.34, 129.88
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| cyclobutanecarboxylic acid (CBCA) |
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| CO2H |
181.9, 181.4782
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N/A
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| CH |
37.9, 37.5893
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137.573, 136.72
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| CH2 |
25.0, 24.6505
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136.719, 137.57
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| " |
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136.719, 137.57
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| CH2 |
18.2, 17.8415
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135.01, 133.3
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| " |
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135.864, 135.01
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| cyclopropanecarboxylic acid (CPCA) |
|
|
| CO2H |
181.6273, 181.6443, 181.1725
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N/A
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| CH |
12.7607,12.7777, 12.3061
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169.19, 169.19, 172.61
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| CH2 |
9.0251, 9.0421, 8.5874
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166.62, 164.07, 169.19
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| " |
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164.92, 165.77, 165.77
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Assignments:
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