I understand that you can react enantiomers with a chiral molecule to resolve the enantiomers of interest into diastereomers.
However I do not understand how exactly the added chiral molecule can make the enantiomers of interest into diastereomers.
Can someone please explain the process/mechanism ?
For example: here is a picture from my textbook.
How are those two salts Diastereomers, even though they are mirror images of each other.