Question

Explain cationic complexes and anionic complexes of coordination compound

Answer 1

Answer:

1. Cationic complexes: A complex in which the complex ion carries a net positive charge is called a cationic complex. eg. [ Fe(H2O)6]Cl3, [Co(NH3)6]Cl3, [Ni(NH3)6]Cl2 are cationic complexes.

Answer 2

The cationic complexes and anionic complexes of coordination compounds are described below:

• Coordination compounds are those compounds that are formed by the transition metal atom and a substance that can accept electrons from d orbitals of metal.
• These coordination complexes cannot be dissociated into individuals ions as they are much more stable.
• The transition complexes metal is contained in a sphere known as the coordination sphere.
• For example- [Ag(NH3)2]+, [Cu(CN)3]2-,[Ni(CO)4],[NiCl4]2− and [(AlC2O4)3]3-.
• The charge present outside the coordination sphere decides whether the coordination compound is cationic or anionic.
• [Ag(NH3)2]+ is a cationic complex, [Ni(CO)4] is neutral whereas [NiCl4]2− and [(AlC2O4)3]3-, Cu(CN)3]2- are examples of the anionic complex.