A tool to change conformation

This video and the accompanying molecular model will help you visualize a structure after a bond rotation. The initial conformation matches the left-hand line-angle drawing. Each click will rotate the indicated bond by 30 degrees. Try to find a way to make the 3D model identical to the right-hand structure in which all of the carbon atoms are in the plane. If you get stuck, watch the video.

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Rotate -Me, -Br, & -H by 30 degrees:

Rotate -Et, -Br, & -H by 30 degrees:

Bond Rotation for Cis-2-Pentene

Here's the image that was generated in the video. Compare it to the MarvinSketch and Jmol above.

Cis-2-pentene Conformational Change