Representing Polymers and Other Repeating Units

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Brackets, parentheses, and braces enclose structures or structural fragments that are to be repeated a number of times. The bracket properties in ChemDraw allow you to specify the context and orientation of the repeating units.

To enclose structures with brackets:

1. Click the Bracket tool and select one of the double bracket tools.

2. Click+drag across the structure to draw the brackets.

3. Control-click and select the appropriate bracket properties from the menu that appears.

The bracket properties are described in the following sections.

NOTE: This method will give a default value for component order, multiple group repeat count, or SRU label. To change a default value, use the Bracket Properties dialog box.