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Welcome to WebSpectra - This site was established to provide chemistry students with a library of spectroscopy problems. Interpretation of spectra is a technique that requires practice - this site provides 1H NMR and 13C NMR, DEPT, COSY and IR spectra of various compounds for students to interpret. Hopefully, these problems will provide a useful resource to better understand spectroscopy.
This project is supported by Cambridge Isotope Laboratories and the UCLA Department of Chemistry and Biochemistry.
| Project Director | Professor Craig A. Merlic |
 ©Copyright 1997 Craig A. Merlic, Barry C. Fam and The Regents of University of California |
| NMR Facility Contributor | Dr. Jane Strouse | |
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Instructional Documents
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Awards
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Problems
All problems contain 1H and 13C NMR Spectra
Problems with additional spectra are marked: 
IR Spectrum, 
DEPT spectra, and 
COSY spectrum.
Use the WebSpectra Search to locate specific types of compounds
IR Spectra may be compared in order to illustrate differences in absorption using the WebSpectra IR Comparison.
BEGINNING
| Compound 1 | Compound 2 | Compound 3 | Compound 4 |
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Compound 5
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Compound 6 | Compound 7 | Compound 8 |
| Compound 9 | Compound 10 | Compound 11 |
Compound 12
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Compound 13
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Compound 14
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Compound 15 | Compound 16 |
| Compound 17 | Compound 18 |
Compound 19
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Compound 20 |
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Compound 21
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Compound 22
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Compound 23
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Compound 24
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Compound 25
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Compound 26 | Compound 27 | Compound 28 |
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Compound 29
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Compound 30
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COMBINED ANSWER KEY BEGINNING PROBLEMS 1-15 | COMBINED ANSWER KEY BEGINNING PROBLEMS 16-30 |
INTERMEDIATE 1
| Compound 1 | Compound 2 | Compound 3 | Compound 4 |
| Compound 5 | Compound 6 | Compound 7 | Compound 8 |
| Compound 9 | Compound 10 | Compound 11 | Compound 12 |
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Compound 13
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Compound 14 |
Compound 15
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Compound 16
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Compound 16
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COMBINED ANSWER KEY BEGINNING PROBLEMS INTERMEDIATE 1 | ||
INTERMEDIATE 2
| Compound 1 | Compound 2 | Compound 3 | Compound 4 |
| Compound 5 | Compound 6 | Compound 7 | Compound 8 |
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Compound 9
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Compound 10
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Compound 11 |
Compound 12
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Compound 13
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COMBINED ANSWER KEY BEGINNING PROBLEMS INTERMEDIATE 2 | ||
ADVANCED
| Compound 1 | Compound 2 | Compound 3 | Compound 4 |
| Compound 5 | Compound 6 | Compound 7 | Compound 8 |
| Compound 9 | Compound 10 | Compound 11 | Compound 12 |
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Compound 13
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Compound 14
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Compound 15
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Compound 16
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NMR Links of Interest
General
- WebSpectra Technical Notes
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NMR at Widener University
Widener University, Pennsylvania
Spectrum Archives
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Organic Structure Elucidation Workbook
University of Notre Dame, Indiana -
The FTNMR Free Induction Decay Archive
Pacific Lutheran University, Washington -
Integrated Spectral Data Base System for Organic Compounds
National Institute of Materials and Chemical Research, Japan - Spectroscopic Tools
Software
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Compilation of Educational NMR Software
University of York, United Kingdom -
Compilation of Educational NMR Software
European Molecular Biology Laboratory, Germany
