User 0e2eca50f6
15-05-2006 16:36:20
User 870ab5b546
15-05-2006 17:26:52
Yes. Convert all the bonds in the ring to aromatic bonds. The circle will appear.
Works for five-membered heterocycles, too.
User 870ab5b546
15-05-2006 18:31:52
Perhaps an easier way to do it is to draw benzene and then choose Edit -> Bonds -> Aromatize.
User 870ab5b546
16-01-2007 20:41:34
When I aromatize cyclopentadienide(-), the - symbol appears on one of the C atoms. Really, it should appear in the middle of the circle. Having it appear on one of the C atoms violates valence rules and suggests a localized charge, which is not the case here.
The same is true of tropylium, which should have a + charge in the center.
User f359e526a1
16-01-2007 22:12:40
Yes, it is related to the other question you just asked: we are on it, dative and multicenter bonds will appear in 4.2. They are already under development - it is possible now to draw ferrocenes, but good point to assign the charge to the whole ring, not to an atom only. Multicenter bonds will be connected to a set of atoms, hoping solving most of the problems related to coordinated bonds.
