In the Bond properties dialog, you can set the type, the topology, and reacting center property of the selected bonds.
Right-click a bond and choose Bond properties from the context menu. In the opening Bond properties dialog, set the appropriate values from the lists, then click OK.
Type:
single
double
triple
aromatic
up
down
single up or down
double cis or trans
double cis or trans or unspecified
single or double
single or aromatic
double or aromatic
any
coordinate
Topology:
undefined (default value)
in ring
in chain
Reacting center:
undefined (default value)
center - #
make or break - ||
change - |
make and change - |||
not center - X
Stereo search:
On
Off