Drawing Chains

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To draw an acyclic chain:

1. Click the Acyclic Chain tool.

2. Drag in the direction you want the chain to grow in a document window.

A number appears at the end of the chain indicating how many atoms you have drawn.

When Fixed Lengths is on, the pointer on the acyclic chain can be dragged to make any angle relative to the X-axis. At a constant chain length, the positions of the first bond and all subsequent odd-numbered atoms depend on the direction you drag. Before releasing the mouse button, this position can be changed by dragging in the opposite direction. When Fixed Angles is on, the angle the acyclic chain makes relative to the X-axis is constrained to 15-degree increments.