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Bromination of Hexane Isomers

Bromination of 2,3-dimethylbutane and 2,2-dimethylbutane is demonstrated and the reaction rates are compared.

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2.4 MB, 36 seconds

File: MOVIES/TRAM04/0153005.MOV

Voiceover
The isomeric hydrocarbons 2,3-dimethylbutane and 2,2-dimethylbutane are mixed with bromine and irradiated with a slide projector. 2,3-Dimethylbutane reacts more rapidly than the isomeric 2,2-dimethylbutane. This faster rate is attributed to the formation of the more stable tertiary radical intermediate. pH paper shows the presence of an acidic by-product.

Discussion


Bromination of Hexane Isomers
       

Citation:  
  Kolb, K. E. Bradley University, unpublished results.
Design, Text and Demonstrator:  
  Gary Trammell University of Illinois at Springfield, Springfield, IL 62794
Videographer/Editor:  
  Steve Dykema University of Illinois at Springfield, Springfield, IL 62794
Voice:  
  Margaret Biddle University of Wisconsin - Madison, Madison, WI 53706
Audio Production:  
  Greg Minix University of Wisconsin - Madison, College of Engineering, Madison, WI 53706
  Jerrold J. Jacobsen University of Wisconsin - Madison, Madison, WI 53706