Literaturnachweis - Detailanzeige
| Autor/inn/en | Esselman, Brian J.; Hill, Nicholas J. |
|---|---|
| Titel | Proper Resonance Depiction of Acylium Cation: A High-Level and Student Computational Investigation |
| Quelle | In: Journal of Chemical Education, 92 (2015) 4, S.660-663 (4 Seiten)Infoseite zur Zeitschrift
PDF als Volltext |
| Sprache | englisch |
| Dokumenttyp | gedruckt; online; Zeitschriftenaufsatz |
| ISSN | 0021-9584 |
| DOI | 10.1021/ed5002152 |
| Schlagwörter | Investigations; Undergraduate Students; Molecular Structure; Knowledge Representation; Science Education; Organic Chemistry; Misconceptions; Curriculum Implementation; Teaching Methods; Educational Practices; Science Experiments; Science Activities |
| Abstract | The electronic and molecular structure of the acylium cation ([CH[subscript 3]CO][superscript +], 1) receives varied treatment in undergraduate textbooks and online resources. The overall structure of 1 is typically represented as an equal combination of resonance structures containing C-O triple and double bonds, the latter structure occasionally being shown with a bent C-C-O bond angle. This description is inconsistent with available experimental and theoretical data, all of which indicate that 1 is a linear molecule containing a C[triple bar]O bond, and can lead students to a false conception of structure, conjugation, and charge distribution. A set of simple computational exercises is reported that allows students to calculate and rationalize the most accurate resonance representation of 1. (As Provided). |
| Anmerkungen | Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail: eic@jce.acs.org; Web site: http://pubs.acs.org/jchemeduc |
| Erfasst von | ERIC (Education Resources Information Center), Washington, DC |
| Update | 2020/1/01 |
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