| Journal Articles: 18 results |
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A Green, Guided-Inquiry Based Electrophilic Aromatic Substitution for the Organic Chemistry Laboratory Eric Eby and S. Todd Deal
This alternative, electrophilic aromatic substitutionan iodination reaction of salicylamide, a popular analgesicuses environmentally friendly reagents and serves as a guided-inquiry experiment in which students are asked to predict the orientation of the substitution reaction and determine the product's structure using FT-IR spectroscopy.
Eby, Eric; Deal, S. Todd. J. Chem. Educ. 2008, 85, 1426.
Aromatic Compounds |
Constitutional Isomers |
Electrophilic Substitution |
Green Chemistry |
IR Spectroscopy |
Synthesis
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Coupling Molecular Modeling to the Traditional "IR-ID" Exercise in the Introductory Organic Chemistry Laboratory Heather Stokes-Huby and Dale E. Vitale
In this exercise students are required to identify unknowns from their IR spectra, but must also match some of the absorptions with frequencies generate by computer molecular models. Animations of the corresponding bonds in the model are then used to obtain descriptions of the observed vibrations.
Stokes-Huby, Heather; Vitale, Dale E. J. Chem. Educ. 2007, 84, 1486.
Computational Chemistry |
IR Spectroscopy |
Liquids
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Presumptive and Confirmatory Drug Tests Craig Anderson
Tests for illegal drugs were performed on unknowns obtained from over-the-counter cold medicines. Substances that tested positive for the qualitative Marquis color test were found to be false positives for illegal substances, while scopolamine hydrochloride shows a false positive for cocaine hydrochloride with the cobalt thiocyanate reagent.
Anderson, Craig. J. Chem. Educ. 2005, 82, 1809.
Drugs / Pharmaceuticals |
Qualitative Analysis |
Acids / Bases |
Gas Chromatography |
IR Spectroscopy |
Mass Spectrometry
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Classification of Vegetable Oils by Principal Component Analysis of FTIR Spectra David A. Rusak, Leah M. Brown, and Scott D. Martin
Comparing unknown samples of vegetable oils to known samples using FTIR and principal component analysis (PCA) and nearest means classification (NMC).
Rusak, David A.; Brown, Leah M.; Martin, Scott D. J. Chem. Educ. 2003, 80, 541.
IR Spectroscopy |
Instrumental Methods |
Food Science |
Lipids |
Chemometrics |
Qualitative Analysis |
Fourier Transform Techniques |
Consumer Chemistry |
Applications of Chemistry
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Synthesis and Characterization of a Gasoline Oxygenate, Ethyl tert-Butyl Ether Craig J. Donahue, Teresa D'Amico, and Jennifer A. Exline
Procedure for the synthesis and characterization of ethyl tert-butyl ether.
Donahue, Craig J.; D'Amico, Teresa; Exline, Jennifer A. J. Chem. Educ. 2002, 79, 724.
Chromatography |
Synthesis |
Ethers |
Gas Chromatography |
IR Spectroscopy |
Qualitative Analysis
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The Isolation of Rubber from Milkweed Leaves. An Introductory Organic Chemistry Lab Lisa Volaric and John P. Hagen
Experiment that teaches many basic laboratory techniques (refluxing, vacuum filtering, extracting, centrifuging, and IR fingerprinting) while introducing students to polymers and natural-product isolations.
Volaric, Lisa; Hagen, John P. J. Chem. Educ. 2002, 79, 91.
IR Spectroscopy |
Natural Products |
Plant Chemistry |
Applications of Chemistry |
Separation Science
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Identifying Softwoods and Hardwoods by Infrared Spectroscopy Brady Barker and Noel L. Owen
Infrared spectra of 45 softwoods and hardwoods have been recorded. The wavenumber values of the carbonyl stretching vibration and one of the ring-breathing modes of lignin are used to distinguish softwoods from hardwoods. The differences between the absorption bands for the softwoods and hardwoods in each instance are shown to be statistically significant.
Barker, Brady; Owen, Noel L. J. Chem. Educ. 1999, 76, 1706.
Carbohydrates |
Instrumental Methods |
IR Spectroscopy |
Plant Chemistry |
Molecular Properties / Structure
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Infrared Spectroscopy Determination of Lead Binding to Ethylenediaminotetraacetic Acid Alanah Fitch and Simona Dragan
In an attempt to improve a thematic lab sequence based on lead analysis of community derived samples, we have considered infrared spectroscopy as a method of determining the lead bound to ethylenediaminotetraacetic acid (EDTA).
Fitch, Alanah; Dragan, Simona. J. Chem. Educ. 1998, 75, 1018.
IR Spectroscopy |
Qualitative Analysis |
Quantitative Analysis |
Coordination Compounds
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Grignard Synthesis of Various Tertiary Alcohols T. Stephen Everett
A general Grignard procedure is presented for the synthesis of aliphatic, tertiary alcohols containing six to nine carbons. Without revealing the specific starting materials, students are challenged to identify their unknown products from physical (boiling points, refractive indices) and spectral (infrared O-H, C-H and fingerprint regions) data.
Everett, T. Stephen. J. Chem. Educ. 1998, 75, 86.
IR Spectroscopy |
Alcohols |
Mechanisms of Reactions |
Synthesis
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An Investigation into the Absorption of Infrared Light by Small Molecules: A General Chemistry Experiment William B. Heuer and Edward Koubek
An introductory, two-part classroom/laboratory activity demonstrating the mechanism of absorption of infrared light by small molecules is described. A model for molecular vibration is introduced during pre-lab discussion, and a mechanism by which such vibrations may be excited by infrared radiation light is postulated.
Heuer, William B.; Koubek, Edward. J. Chem. Educ. 1997, 74, 313.
IR Spectroscopy
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Teflon Tape as a Sample Support for IR Spectroscopy Keith A. Oberg and Daniel R. Palleros
Replacing IR spectra windows with Teflon tape; includes sample spectra run with NaCl plates and Teflon tape.
Oberg, Keith A.; Palleros, Daniel R. J. Chem. Educ. 1995, 72, 857.
IR Spectroscopy |
Laboratory Equipment / Apparatus
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Quantitative analysis by FTIR: Thin films of copolymers of ethylene and vinyl acetate. Mathias, Lon J.; Hankins, Marie G.; Bertolucci, Craig M.; Grubb, Tina L.; Muthiah, Jeno.
Quantitation of coploymers of ethylene and vinyl acetate using FTIR.
Mathias, Lon J.; Hankins, Marie G.; Bertolucci, Craig M.; Grubb, Tina L.; Muthiah, Jeno. J. Chem. Educ. 1992, 69, A217.
IR Spectroscopy |
Fourier Transform Techniques |
Quantitative Analysis |
Alkenes |
Carboxylic Acids
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Introductory use of infrared spectra: A formalized approach McMinn, Dennis
A strategy for introducing the interpretation of IR spectra by looking for the presence (or absence) of peaks in six key regions
McMinn, Dennis J. Chem. Educ. 1984, 61, 708.
Spectroscopy |
IR Spectroscopy |
NMR Spectroscopy |
Molecular Properties / Structure
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The preparation and characterization of the geometric isomers of a coordination complex: cis- and trans-bis-glycinato copper(II) monohydrates O'Brien, Paul
The preparation of the cis and trans isomers of the kinetically labile bis glycinato copper(II) has a number of advantages including its facility, economy, ready theoretical interpretation, and biological relevance.
O'Brien, Paul J. Chem. Educ. 1982, 59, 1052.
Synthesis |
Stereochemistry |
Diastereomers |
IR Spectroscopy |
Coordination Compounds |
Crystal Field / Ligand Field Theory
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Spectroscopy illustrated - A lecture experiment Boschmann, Erwin
Uses DMSO to illustrate factors that influence the frequency of absorption in infrared spectroscopy.
Boschmann, Erwin J. Chem. Educ. 1982, 59, 57.
Spectroscopy |
IR Spectroscopy |
Coordination Compounds
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Fourier Transform Spectrometers - Part Two Low, M. J. D.
Surveys available commercial IR and UV spectrometers.
Low, M. J. D. J. Chem. Educ. 1970, 47, A255.
Instrumental Methods |
Spectroscopy |
Laboratory Equipment / Apparatus |
Fourier Transform Techniques |
IR Spectroscopy |
UV-Vis Spectroscopy
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Multiple-scan infrared interference spectroscopy Low, Manfred J. D.
Describes the design, operation, and application of a multiple-scan Michelson interference spectrometer.
Low, Manfred J. D. J. Chem. Educ. 1966, 43, 637.
Spectroscopy |
IR Spectroscopy |
Laboratory Equipment / Apparatus |
Instrumental Methods
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Infrared spectroscopy: A chemist's tool Pimentel, George C.
This paper serves as an introduction to infrared spectroscopy and seeks to explain why it has assumed such an important role in chemistry.
Pimentel, George C. J. Chem. Educ. 1960, 37, 651.
Spectroscopy |
IR Spectroscopy
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