How do I change the fixed bond lengths and bond angles in ChemDraw?
By default, ChemDraw draws structures with fixed bond lengths and bond angles. The value of those lengths and angles is determined by the settings for the particular type of document.
You can change this behavior by un-checking the Fixed Length / Fixed Angles option on the Object Menu.
To suppress fixed lengths and fixed angles, press and hold the ALT key as you drag the bond.