Question

Which types of isomerism are in $\left[Co{\left(N{H}_3\right)}_{5}Br\right]S{O}_4$ and $\left[Co{\left(N{H}_3\right)}_{5}S{O}_4\right]Br$?

Answer 1

Ionization isomers are identical except for a ligand has exchanging places with an anion or neutral molecule that was originally outside the coordination complex. The central ion and the other ligands are identical. For example, an octahedral isomer will have five ligands that are identical, but the sixth will differ. The non-matching ligand in one compound will be outside of the coordination sphere of the other compound. Because the anion or molecule outside the coordination sphere is different, the chemical properties of these isomers is different. A hydrate isomer is a specific kind of ionization isomer where a water molecule is one of the molecules that exchanges places.