Groups-Repetition units

    How to create a Repetition unit or an SRU polymer

    with the Repeating Group tool

    After the dialog closes, the repetition unit is established.

    with Selection

    After the dialog closes, the repetition unit is established.

    Please, remember:


    • one atom has been selected and

    • the repetition pattern is the default value (ht) and

    • the repetition count is a range starting with 1-...

    the structure will be exported as a Link node.

    How to modify a Repeating Unit

    You can change the range and the pattern of the repetition by opening the Repeating group dialog.


    With the active Repeating group tool hover over the group on the canvas with the mouse cursor. When the elements of the group are highlighted in grey, left-click within the brackets.

    In the opening Repeating group dialog you can change the current values.

    Delete a Repeating Unit

    Right-click on the structure within the brackets, then select Ungroup from the menu.

    When you modify the atoms or bonds in the group, it will automatically ungroup.

    Related pages

    Repeating group dialog

    Groups-Link nodes

    ... back to Substructure elements