Chemistry Question on coordination compounds

Question

Which of the following ligands form a chelate?

Answer 1

Solution

Oxalate is a bidentate ligand and hence it forms a chelate.

Oxalate forms a Chelate

In chelation, ring forming is induced by the interaction of two atoms with the metal atom from the same ligand. This is unlikely if the ligand is monodentate. The more stable are Chelates than unchelated compounds with a similar structure, and the greater the number of ring openings in the metal molecule, the more stable the compound.

The most stable is Chelates. This mechanism is called the chelate effect. The thermodynamic quantity called entropy, correlated with chelation, normally decreases. Chelate's durability is often correlated with the number of chelate atoms. Chelates with five or six circles are typically more secure than those with four, seven, or eight circles.