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| Electron Density of Aromatic Rings - Effect of Methyl Groups |
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Voiceover
The intensity of the colors of complexes between benzene derivatives and tetracyanoethylene reveals the electron density on the aromatic rings.
Discussion
A 1% solution of tetracyanoethylene (TCNE) in dichloromethane is added to four test tubes containing benzene, toluene, m-xylene, and mesitylene respectively. The intensity of the color of the resulting p-complex increases with increasing electron density on the aromatic ring. A methyl group is electron donating and its effect is additive with mesitylene showing the highest electron density.
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Citation:
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Kolb, K. E.
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J. Chem. Educ. 1989, 66, p 853.
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Design, Text and Demonstrator:
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Gary Trammell
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University of Illinois at Springfield, Springfield, IL 62794
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Videographer/Editor:
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Steve Dykema
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University of Illinois at Springfield, Springfield, IL 62794
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Voice:
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Margaret Biddle
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University of Wisconsin - Madison, Madison, WI 53706
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Audio Production:
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Greg Minix
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University of Wisconsin - Madison, College of Engineering, Madison, WI 53706
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Jerrold J. Jacobsen
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University of Wisconsin - Madison, Madison, WI 53706
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