Point Group D3: [Co(en)3]3+

Build tris(ethylenediamine)cobalt(III), [Co(en)₃]³⁺, with the Indigo® 68821W point group molecular model kit to illustrate D3 point group symmetry and the chirality of tris-chelate metal complexes. Ideal for undergraduate and advanced inorganic chemistry, group theory, and spectroscopy courses.

The Indigo® 68821W kit builds tris(ethylenediamine)cobalt(III), [Co(en)₃]³⁺, a standard example of the D3 point group. The model shows three bidentate ethylenediamine ligands around a central cobalt atom. The propeller-like chiral structure has a C3 principal rotation axis and three perpendicular C2 axes. But, it has no mirror planes or inversion center which is a defining feature of the chiral D3 point group. Other D3 molecules include 2,4-hexadiyne, bicyclo[2.2.2]octane, guanidinium, and triethylenediamine.