Select the ring system from the toolbar. To add a new ring click on an empty spot in the drawing area. By holding and dragging the orientation of the ring can be changed.
Clicking on an already existing atom or a bond will incorporate it into the ring. When adding a ring to a bond the ring can be positioned on either side of the bond by holding and dragging.
2 Responses
Dana Griffiths
How do you change benzene to show the circle inside, instead of the alternating single and double bonds?
Stefan
Hi Dana,
There is no automatic way (yet ?!) to change alternating single and double bonds in a benzene ring into a circle.
But you can proceed as follows:
– draw a benzene ring with alternate single and double bonds from the toolbar
– select the benzene ring.
– right click in the benzene ring to bring up the pop up menu
– choose in the bond section “delocalized bond invisible” (black line with yellow dots) from bond types. The bonds of the benzene ring will now be highlighted in yellow.
– draw a circle and place it inside the benzene ring
– select circle and ring and align them vertically and horizontally (menu bar -> Arrange)
– group circle and benzene ring (menu bar -> Arrange)
I hope, this helps!
Stefan