We’re being asked to identify the bond angles of the N-N-C angle in Azobenzene and Hydrazobenzene. Since their Lewis structure is already given, we simply need to do the following steps:
Step 1: Determine the number of electron groups around the indicated atom.
Step 2: Determine the electron geometry and bond angle using this:
Electron Regions Electronic Geometry Bond Angles
2 linear 180˚
3 trigonal planar 120˚
4 tetrahedral 109.5˚
5 trigonal bipyramidal 90˚, 120˚, and 180˚
6 octahedral 90˚ and 180˚
Azo dyes are organic dyes that are used for many applications, such as the coloring of fabrics. Many azo dyes are derivatives of the organic substance azobenzene, C12 H10 N2. A closely related substance is hydrazobenzene, C12 H12 N2. The Lewis structures of these two substances are showin in the diagram. (Recall the shorthand notation used for organic molecules.)
Predict the N-N-C angle in each of the substances.
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Our tutors have indicated that to solve this problem you will need to apply the Bond Angles concept. You can view video lessons to learn Bond Angles. Or if you need more Bond Angles practice, you can also practice Bond Angles practice problems.