Ethylenediamine

Ethylenediamine (en)

Electron Contribution: 4 electrons (neutral bidentate ligand).

Key Features:

• A chelating ligand, often used in coordination chemistry.
• Example: [Ni(en)₃]²⁺.

Proposed Image: Tris-chelate complex of [Ni(en)₃]²⁺ with bidentate en ligands clearly shown.