With two chiral centres, you can form 4 different isomers.
The complexes of different isomers often have dramatically different properties from each other.
However different isomers can have the same atomic composition while being different molecules.
Most chlorophenols have a number of different isomers.
The commercially used HBCD is in fact a mixture of different isomers.
When a molecule has a double bond or a ring structure, the molecule can be sorted into different isomers.
Protein folding concerns the complex geometries and different isomers that proteins can take.
This class includes enantiomers where different isomers are non-superimposable mirror-images of each other, and diastereomers when they are not.
So there are 16 different isomers.
It can also isolate different isomers of the same compound that carry different charges.