Create a new bond:
Select a bond type using the Bond toolbar 
button or by shortcut.
- To link two existing atoms, select a bond type, click on one then drag the cursor to the other.
To draw a bond from a single atom, simply click the atom. A carbon atom is added at the other end of the bond.
Marvin allows you to draw a bond between any two atoms in the molecule. Valence errors are highlighted (if that option is enabled).
- If you add a bond to empty canvas space, a carbon atom is added to each end of the bond.
Further bond types applied in Marvin:
- multi-center bond (For details see the Coordination compounds section.)
- position variation bond (For details see the Markush structure section.)
Xle (J): is L-Leucine or L-Isoleucine
Replace a bond
- You can replace any bond in the molecule by placing a new bond type on top of it.
- Bond types can also be changed using the Bond pop-up menu.
- Single bonds can be changed to double or triple by left-clicking on them
.
- Additionally, you can change a bond, selecting it and use the following keys shortcut.
| Available Bonds | |
|---|---|
| Single | |
| Double |  |
| Triple |  |
| Aromatic |  |
| Single Up |  |
| Single Down |  |
| Single Up or Down |  |
| Double Cis or Trans |  |
| Double C/T or Unspec |  |
| Single or Double |  |
| Single or Aromatic |  |
| Any |  |
| Coordinate |  |
1 |
Single bond |
2 |
Double bond |
3 |
Triple bond |
4 |
Aromatic bond |
5 |
Single up bond (active only in 2D) |
6 |
Single down bond (active only in 2D) |
7 |
Single up or down bond |
12 |
Single or double bond |
14 |
Single or aromatic bond |
24 |
Double or aromatic bond |
0 |
Any bond |
Bold tool
The Bold tool, 
, is intended to be used for graphical presentations of molecules.
It is located in the Bond menu, on the Tools toolbar and in the Bond pop-up menu by default.
Activate the tool, click on a bond and it will be changed to bold.
In case of single, double, or aromatic bond clicking again you can reestabilish the original bond.
Aromatic bonds has four representations: bold single 
, bold aromatic up
, reversed bold aromatic up, and single 
. Select the bond to be changed and clicking on it til your bond of choice is displayed.
Other bond types (e.g., triple, wedges) change not only the display but their type as well. In these cases Bold tool results in bold single bonds. Multiple clicking does not retain the original bond type, but undoing the action does.
Example
Hashed bond
You can make the selected bond hashed: Choose the icon from the Tools toolbar or the Bond > Hashed menu option. It only retains single original bond type.