User guide

Figure 3.1: a)cyclopropane; b)cyclopentane; c)cycloheptane; d)cyclo hexane chair(1); e)cyclopentadiene; f)c-
yclobutane; g)cyclohexane; h)cyclooctane; i) cyclo hexane chair(2); j)benzene.
To draw a ring:
1. In the Main toolbar, select a ring tool.
2. Click and drag in the document to orient the ring.
If you click an atom or bond with a ring tool in an existing structure, the ring is fused to it. You can also use hotkeys to
fuse rings. For more information, see "Bond hotkeys" on page 305. You can also reduce the size of the rings. For more
information, see "Reducing ring size" on page 15
Spiro and sprout rings
By default, clicking an atom in a ring using a ring tool forms a spiro link. However, if you click an atom while holding
the ALT key down, it will sprout the ring.
You can change this behavior so that a sprout bond appears instead of a spiro ring:
1. Go to File>Preferences.
2. On the Building/Display tab, check the box next to Sprout Rings Instead of Spiro When Clicking.
Cyclohexane chair rings
You can draw cyclohexane chair rings in two orientations: horizontal and vertical. When you draw a cyclohexane chair
ring by clicking, the chair is drawn in a horizontal orientation.
To orient a cyclohexane chair ring to a vertical orientation:
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