JCE Online Journal of Chemical Education
 | Subscriptions  | Software Orders  | Support  | Contributors  | Advertisers  | 

JCE Print
   Current Issue
 Previous Issues
 Supplements
 Search JCE Index

JCE Digital Library
   DigiDemos
 QBank
 SymMath
 WebWare

JCE Software
   Latest Releases
 Software & Video
 Downloads
 Support

Only@JCE Online
   JCE Online Store
 JCE HS CLIC
 JCE Discussion Forums
   Biographical Snapshots
 ChemEd Resource Shelf
 Featured Molecules
 Hal's Picks
 Project Chemlab
 Reviewed WWW Sites
 "Web-Ed" Articles

About JCE
   Features
 Publications
 Operations
 Outreach
 Contact Us


  Home > JCE Print > Journal of Chemical Education > Issues > 2000  > January  >
In the Laboratory
Student-Determined Values for the Calculation of Chemical Shifts of Methylene Protons in Different Chemical Environments
Gary W. Breton
Department of Chemistry, Berry College, P.O. Box 495016, Mount Berry, GA 30149-5016
Cover
January 2000
Vol. 77 No. 1
p. 81
Abstract
Many tables of values exist for the rapid calculation of approximate chemical shifts of protons in organic molecules. These tables are usually simply handed to students to use without discussion of the source of such data. Herein we describe a laboratory experiment in which students themselves determine values for the calculation of chemical shifts of methylene protons in a variety of chemical environments. Although these values come from single determinations of representative compounds from several different classes, the alpha-parameter values obtained are in close agreement with literature data. Students also gain valuable hands-on experience preparing samples, operating the NMR spectrometer, and interpreting the 1H NMR spectra of a variety of compounds.
Supplement
Equipment list, experimental procedure, laboratory report form, and questions are provided.
*  Contents
*  Download
supp81.pdf

supp81.sit

supp81.zip
More Information
*  Citation
 Breton, Gary W. J. Chem. Educ. 2000 77 81.
*  Keywords
 Laboratory Equipment / Apparatus; NMR Spectrometry; Laboratory Instruction
*  History
 Created:
Last Updated:		 December 9, 1999
August 31, 2005
<< Previous Article Table of Contents Next Article >>
  Home > JCE Print > Journal of Chemical Education > Issues > 2000  > January  > Page 81


Subscriptions
 Subscription Info
 Order Forms

JCE HS CLIC

Our Secondary School editors work hard to distill all the JCE materials to produce a fraction of particular interest to high school teachers. We call it CLIC.
 JCE HS CLIC

Contributions Welcome
JCE welcomes your submission
 Contributors' Corner

Advertisers
In recent years we have worked hard to better match our advertisers with our readers. When shopping for chemistry education materials, visit our advertisers' WWW sites first.
 Recent Advertisers

Be An Ambassador
Take JCE along on your outreach missions. Copies of the Journal, guest access to JCE Online, our publications catalog, and more are available for your participants.
 Outreach with JCE

Comments to
jceonline@chem.wisc.edu		 Copyright © Division of Chemical Education, Inc., American Chemical Society.
All rights reserved.