Question

What is coordination unsaturation and various factor affecting of these reactions

Answer 1

Coordination unsaturation is one in which a transition metal complex possesses fewer ligands than exist in the coordination saturation. These complexes usually have fewer than 18 outer shell electrons at the central metal atom.

Coordination unsaturation depends on polymeryzation, isomerization, and so on; it is the reason for the thermodynamic instability of the crystalline or amorphous phases.