Coordination Sphere and Ionic Sphere Preparation and Properties
Coordination Sphere and lonic Sphere :
→ The central metal atom and the ligands which are directly attached to it are enclosed in a square bracket [ ] and are collectively termed as coordination sphere. The ligands and the metal atom inside the square brackets behave as single constituent unit.
→ The ionisable group written outside the bracket is known as counter ions. For example : in the complex K4[Fe(CN)6], K+ is the counter ion.
→ The species present in the coordination sphere are non-ionisable while the species present in the ionisation sphere are ionisable