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Quantitative Analysis of Nail Polish Remover Using Nuclear Magnetic Resonance Spectroscopy RevisitedMarkus M. Hoffmann, Joshua T. Caccamis, Mark P. Heitz, and Kenneth D. Schlecht Substantial modifications intended for a second- or third-year laboratory course in analytical chemistry are presented for a previously described procedure using NMR spectroscopy to quantitatively determine analytes in commercial nail polish remover. The revised experiment introduces student collaboration to critically interpret a relatively large set of data. Hoffmann, Markus M.; Caccamis, Joshua T.; Heitz, Mark P.; Schlecht, Kenneth D. J. Chem. Educ.2008, 85, 1421.
Alcohols |
Aldehydes / Ketones |
Consumer Chemistry |
Instrumental Methods |
Laboratory Equipment / Apparatus |
NMR Spectroscopy |
Quantitative Analysis
Conformation Interchange in Nuclear Magnetic Resonance SpectroscopyKeith C. Brown, Randy L. Tyson, and John A. Weil Intramolecular dynamics are readily discernible by use of nuclear magnetic resonance spectrometry. A relatively simple laboratory tutorial experiment demonstrating such motion, an internal interchange of conformations, in a readily available nitroaromatic hydrazine (2,2-diphenyl-1-picrylhydrazine in liquid solution) is presented and discussed. Brown, Keith C.; Tyson, Randy L.; Weil, John A. J. Chem. Educ.1998, 75, 1632.
Magnetic Properties |
Molecular Properties / Structure |
NMR Spectroscopy |
Stereochemistry |
Aromatic Compounds
Using Fourier Transforms to Understand Spectral Line ShapesGrunwald, Ernest; Herzog, Jonathan; Steel, Colin Using a computerized Fast Fourier Transforms (FFT) algorithm to analyze the rates of physical and chemical processes through dynamic spectroscopy. Grunwald, Ernest; Herzog, Jonathan; Steel, Colin J. Chem. Educ.1995, 72, 210.
Mechanisms That Interchange Axial and Equatorial Atoms in Fluxional ProcessesMarion E. Cass, Henry S. Rzepa, King Kuok Hii The Berry pseudorotation is a classical mechanism for interchanging axial and equatorial ligands in molecules with trigonal bipyramidal geometry. Teaching this mechanism presents particular pedagogic problems due to both its dynamic and three dimensional character. The approach taken here illustrates these processes using interactive animations embedded in a Web page and overcomes many limitations of a printed page.
