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Cornell College Students Achieve the Highly Improbable

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Addison Ault

Department of Chemistry, Cornell College, 600 First Street West, Mount Vernon, IA 52314-1098

J. Chem. Educ., 2000, 77 (11), p 1386

DOI: 10.1021/ed077p1386

Publication Date (Web): November 1, 2000

Abstract

On Tuesday, March 14, 2000, at Cornell College, Mount Vernon, Iowa, two students who prepared the photochromic compound 2-(2,4-dinitrobenzyl)pyridine obtained their product as a single crystal, one weighing 864 mg and the other 891 mg. As far as we know, this has happened only once before, also at Cornell College in Iowa. The web version of this paper includes a time-lapse video of the photochromic conversion in which the original brown-sugar brown crystals turn into the blue-jeans blue form under the influence of the photographer's floodlight.

Keywords (Audience):

General Public

Keywords (Domain):

Laboratory Instruction

Keywords (Feature):

Report

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Crystals / Crystallography

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This article has been cited by 1 ACS Journal articles (1 most recent appear below).

Enhancements on the Photochromism of 2-(2,4-Dinitrobenzyl)pyridine: Molecular Modeling, NMR Spectrometry, Photo- and Solvent-Bleaching
Ernest C. McGoran , Kevin Hintz , Kristin Hoffman and Ramon Iovin
Journal of Chemical Education2006 83 (6), 923
- Enhancements on the Photochromism of 2-(2,4-Dinitrobenzyl)pyridine: Molecular Modeling, NMR Spectrometry, Photo- and Solvent-Bleaching
  Ernest C. McGoran , Kevin Hintz , Kristin Hoffman and Ramon Iovin
  Journal of Chemical Education2006 83 (6), 923
  Molecular-modeling studies on the photochromism of 2-(2,4-dinitrobenzyl)pyridine (α-DNBP), a compound whose synthesis has been previously reported in this Journal, focus on the hydrogen atom migratory distances and the energies for the two very different ...
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