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ERIC Number: EJ824970
Record Type: Journal
Publication Date: 2008-Feb
Pages: 3
Abstractor: As Provided
Reference Count: 5
ISSN: ISSN-0021-9584
Why Are [superscript 1]H NMR Integrations Not Perfect? An Inquiry-Based Exercise for Exploring the Relationship between Spin Dynamics and NMR Integration in the Organic Laboratory
Weizman, Haim
Journal of Chemical Education, v85 n2 p294-296 Feb 2008
When FT-NMR is used to collect data without a sufficient delay time between subsequent pulses, the integrated area under certain peaks may result in a lower value than should be observed under appropriate conditions. This discrepancy in integration may deceive the inexperienced eye and consequently can lead to a wrong assignment of the NMR spectrum. The following exercise is designed to raise awareness of this issue in students and to serve as an inquiry-based stepping-stone into basic FT-NMR. The exercise can be conducted as part of an organic lab where the students are synthesizing a compound and analyzing its spectrum or as a theoretical exercise using the provided spectra. (Contains 2 figures, 2 tables, and 1 scheme.)
Division of Chemical Education of the American Chemical Society. Subscription Department, P.O. Box 1267, Bellmawr, NJ 08099-1267. Tel: 800-691-9846; Tel: 856-931-5825; Fax: 856-931-4115; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: Students; Teachers
Language: English
Sponsor: N/A
Authoring Institution: N/A