Prev. Article Next Article Table of Contents

Article

Student-Determined Values for the Calculation of Chemical Shifts of Methylene Protons in Different Chemical Environments

Your current credentials do not allow retrieval of the full text.

Purchase the full-text

PDF/HTML,
figures/images,
references and tables,
(where available)

Gary W. Breton

Department of Chemistry, Berry College, P.O. Box 495016, Mount Berry, GA 30149-5016

J. Chem. Educ., 2000, 77 (1), p 81

DOI: 10.1021/ed077p81

Publication Date (Web): January 1, 2000

Section:

History, Education, and Documentation

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.

Keywords (Audience):

Second-Year Undergraduate

Keywords (Domain):

Laboratory Instruction

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Laboratory Equipment / Apparatus

View: Hi-Res PDF | PDF w/ Links

Citing Articles

Citation data is made available by participants in CrossRef's Cited-by Linking service. For a more comprehensive list of citations to this article, users are encouraged to perform a search in SciFinder.

This article has been cited by 4 ACS Journal articles (4 most recent appear below).

Annotated Bibliography: Permanent Magnet Fourier Transform-NMR Applications in the Laboratory
Amy Abe and Frank B. Contratto
2007 969 (), 318-334
- Annotated Bibliography: Permanent Magnet Fourier Transform-NMR Applications in the Laboratory
  Amy Abe and Frank B. Contratto
  2007 969 (), 318-334
  In this chapter, we present an annotated bibliography of permanent magnet FT-NMR applications in the laboratory. Topics include 1H and 13C spectra of organic molecules, multinuclear spectra of inorganic molecules, spectra of biochemical molecules, spectra ...
  Abstract | Hi-Res PDF | PDF w/ Links
The State of Organic Teaching Laboratories
Gail Horowitz
Journal of Chemical Education2007 84 (2), 346
- The State of Organic Teaching Laboratories
  Gail Horowitz
  Journal of Chemical Education2007 84 (2), 346
  This review explores the dramatic changes that have taken place in the organic chemistry laboratory course over the last two to three decades. The most significant changes have been in the areas of pedagogy and technology. Significant inroads have been ...
  Abstract | Hi-Res PDF | PDF w/ Links
Introducing the gNMR Program in an Introductory NMR Spectrometry Course To Parallel Its Use by Spectroscopists
Jackie M. Rummey and Mary C. Boyce
Journal of Chemical Education2004 81 (5), 762
- Introducing the gNMR Program in an Introductory NMR Spectrometry Course To Parallel Its Use by Spectroscopists
  Jackie M. Rummey and Mary C. Boyce
  Journal of Chemical Education2004 81 (5), 762
  Traditional methods of teaching structural elucidation for NMR spectrometry have mimicked spectroscopists' use of peak shift tables and coupling constants. The approach described in this article includes NMR spectral simulation and so parallels ...
  Abstract | Hi-Res PDF | PDF w/ Links
Fun with Computational Chemistry: Solving Spectral Problems Using Computed 13C NMR Chemical Shifts. A Comparison of Empirical and Quantum Mechanical Methods
David A. Forsyth , Leon J. Tilley and Shawn J. Prevoir
Journal of Chemical Education2002 79 (5), 593
- Fun with Computational Chemistry: Solving Spectral Problems Using Computed 13C NMR Chemical Shifts. A Comparison of Empirical and Quantum Mechanical Methods
  David A. Forsyth , Leon J. Tilley and Shawn J. Prevoir
  Journal of Chemical Education2002 79 (5), 593
  The viability of using 13C NMR shift prediction as an aid to solving undergraduate spectral problems was tested. The chemical shifts of structures corresponding to four typical problems were calculated on a PC using two approaches: (i) a quantum ...
  Abstract | Hi-Res PDF | PDF w/ Links