|
|
| Home > JCE Print > Journal of Chemical Education > Issues >
2004
>
May
> |
|
In the Laboratory
|
|
|
|
Lewis Acid–Base, Molecular Modeling, and Isotopic Labeling in a Sophomore Inorganic Chemistry Laboratory
|
Chip Nataro, Michaelle A. Ferguson, Katherine M. Bocage, Brian J. Hess, Vincent J. Ross, and Daniel T. Swarr
Department of Chemistry, Lafayette College, Easton, PA 18042
|
|
May 2004
Vol. 81 No. 5
p. 722
|
|
|
|
| Abstract |
|
Lewis acid–base theory is taught in most inorganic courses. These concepts are typically studied in the laboratory, usually by the formation of an adduct. The reaction of t-BuNH3Cl with NaBH4 is a standard laboratory that allows students to prepare an adduct by reacting a Lewis acid with a Lewis base. The long period of stirring required for this lab provides an opportunity to enrich the laboratory experience. Computational methods can be introduced to simulate IR spectra and to view the HOMO of the Lewis base and the LUMO of the Lewis acid. In addition to the computational exercise, NaBD4 can be used in the synthesis of the adduct in place of NaBH4. This allows the students to observe the effect of isotopic labeling on IR spectra. These additional activities greatly enhance the value of the lab.
|
| Supplement |
Instructions for the students, a prelab assignment, and notes for the instructor are available.
|
 Contents |
JCE2004p0722W.doc (Microsoft Word)
|
| Download |
|
|
| More Information |
Citation |
Nataro, Chip; Ferguson, Michelle A.; Bocage, Katherine M.; Hess, Brian J.; Ross, Vincent J.; Swarr, Daniel T. J. Chem. Educ. 2004 81 722.
|
Keywords |
Acid–Base Chemistry; Inorganic Chemistry; IR Spectroscopy; Isotopes; Laboratory Computing / Interfacing; Laboratory Instruction
|
History |
Created:
Last Updated: |
April 1, 2004
February 18, 2005
|
|
|
|
|
|
| Home > JCE Print > Journal of Chemical Education > Issues >
2004
>
May
> Page
722
|
|
|
| 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.
|
| Contributions Welcome |
| JCE welcomes your submission |
| 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. |
| 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. |
|
