Question

What's the difference between an enantiomer and a diastereomer?

Answer 1

Example as well is possible please?

Answer 2

When you compare 2 steroisomers, it can happen that they happen to be mirror-images of one another.
They form a pair of enantiomers.

Stereoisomers that do not have this property are called diastereoisomers.

Answer 3

Example of stereoisomers:

Answer 4

All Z/E stereoisomers are diastereoisomers.

Answer 5

I don't get what you mean by Z/E stereoisomers. And can't anything with a chiral carbon be an enantiomer then if you just 'put a mirror' opposite it? How would the diastereomer form?

Answer 6

Z/E are also known as cis/trans

Diastereoisomers happen with molecules containing 2 chiral carbon.

Answer 7

Ah, right. That makes sense. Thank you! :)

Answer 8

Do you know R/S ?

Answer 9

Uh, no. Never heard the cis/trans being called Z/E either. Sorry.

Answer 10

Chiral carbons will either be labelled R (rectus) or S (sinister).

If you have substance A which had 2 chiral carbons in the R configuration, it will be called R-R.

Other stereoisomers of the same structure will be:
R-S
S-R
S-S
They can be organised this way:

Answer 11

How is the R-R an enantiomer of S-S?

Answer 12

Viewed in a mirror, a R carbon becomes automatically a S carbon and vice-versa.

Answer 13

Just did a few questions and I'm slightly confused again.

"Draw the pair of steroisomers and label them as disteromers or enantiomers where appropriate" - One of the given molecules was \[CH{3}CH{2}CHCHCl\]



But the answer gives this...



Why is my answer wrong?