ERIC Number: EJ824970
Record Type: Journal
Publication Date: 2008-Feb
Pages: 3
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0021-9584
EISSN: N/A
Available Date: N/A
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.)
Descriptors: Organic Chemistry, Science Instruction, College Science, Science Laboratories, Inquiry, Magnets, Scientific Concepts, Molecular Structure
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: jchemed@egpp.com; Web site: http://www.jce.divched.org
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: Students; Teachers
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A
Author Affiliations: N/A