Inhalation may be fatal as a result of spasm, inflammation, and swelling of air passages. Can cause damage to kidneys and liver and stomach pains, vomiting, and diarrhea. Wear safety goggles and disposable gloves. If you prepare the chemicals for this demo, work in a hood when pouring ethylenediamine into 10 mL beaker. Bring each up to 300 mL with water.
Group beakers together to contrast the four colors.
A complex ion is a metal ion with Lewis bases attached to it through coordinate covalent bonds. A complex or coordination compound is a compound consisting either of complex ions with other ions of opposite charge or of a neutral complex species. Ligands are the Lewis bases attached to the metal atom in a complex. A bidentate ligand is a ligand that bonds to a metal atom through two atoms of the ligand. Bidentate ligands are often called chelating agents.