The Student Room Group

Drawing optical isomers

How do I know which group to draw with a dashed line or a wedge?
Reply 1
15D5B51D-7A15-45FE-BAF6-CB3DDAA14AB9.png
why not build models using pens and coloured plastercine and a mirror, That will probably help you identify which bonds go where
(edited 1 year ago)
Reply 3
Original post by hoyam
15D5B51D-7A15-45FE-BAF6-CB3DDAA14AB9.png

In your first isomer you can decide which group goes where. It doesn’t matter which nod each group is at the end of. But then you draw the other isomer be sure to ‘match it up’ so it is the mirror image of the one you have just drawn. Hope that makes sense.
So the diagram above is just one way of several
possible ways of drawing the pair of optical isomers.

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