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The WebWare molecules of the month for June are from two articles in this
issue.
The article, “Cement: Its Chemistry and
Properties”, featured on the cover, dicusses the constituents
of cement.
Silica
is one of the main components of cement, and the most common form of pure
silica (SO2) is α-quartz.
In “Bromination and Debromination of Cholesterol:
An Inquiry-Based Lab Involving Structure Elucidation, Reaction Mechanism,
and 1H NMR”, Grant and Latimer describe an experiment
suitable for upper-level organic
chemistry students.
Fully manipulable (Chime) versions of these and other molecules are
available at Only@JCE Online.
Figure 1. A portion of α-quartz crystal.
Interactive Chime-based structure (top); static structure graphic (bottom)
Figure 2. Cholesterol molecule. Interactive
Chime-based structure (top); static structure graphic (bottom)
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