Change here the properties related with the charge distribution of the
bond (or list of bonds, previously selected with Bond->Select, when
Global is pressed).
Parameters for empty entries or
Local choices remain unchanged.
To change the bond name write the new name in the Bond entry, followed
by the bond number (GAMGI only needs the number to identify the bond).
Covalency
Change the bond
Covalency, which is a measure of its percentage
ionic/covalent character.
Order
Change the bond
Order, which represents its chemical order.
Although any positive number is allowed, the usual values are
1.0
(single bond, the default),
2.0 (double bond),
3.0 (triple
bond) and
1.5 (aromatic or delocalised bond).
Single, double and triple bonds are rendered in
Wired mode,
as single, double and triple rasterized lines. In
Solid mode,
single bonds are represented by a cylinder (the sigma bond), double
bonds have two additional curved volumes on each side (the pi bond),
and triple bonds have two more curved volumes on each side (the
second pi bond).
Currently, the orientation of the curved volumes in solid secondary
bonds is arbitrary. Currently, aromatic bonds are handled as normal
bonds, according to its bond order, so bonds with order equal to 1.5
are handled as double bonds.