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The WebWare molecules of the month for the month of September are discussed in the article by Gail Horowitz, “A Discovery Approach to Three Organic Laboratory Techniques: Extraction, Recrystallization, and Distillation”. In the extraction part of the experiment, students use aqueous washes to remove a highly polar colored contaminent (crystal violet) or a nonpolar colored contaminent (fluorenone) from a desired compound (fluorene). Fully manipulable (Chime) versions of these and other molecules are available at Only@JCE Online. 
Figure 1. Crystal violet (acid form). Interactive Chime-based structure (top); static structure graphic (bottom).
Figure 2. Crystal violet (basic form). Interactive Chime-based structure (top); static structure graphic (bottom).
 Figure 3. Fluorenone. Interactive Chime-based structure (top); static structure graphic (bottom).
Figure 4. Fluorene. Interactive Chime-based structure (top); static structure graphic (bottom).
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