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In chemistry, the dodecahedral molecular geometry describes the shape of compounds where eight atoms or groups of atoms or ligands are arranged around a central atom defining the vertices of a snub disphenoid (also known as a trigonal dodecahedron). This shape has D2d symmetry and is one of the three common shapes for octacoordinate transition metal complexes, along with the square antiprism and the bicapped trigonal prism.[1][2]
| Dodecahedral molecular geometry | |
|---|---|
 | |
| Examples | Mo(CN)4− 8 |
| Point group | D2d |
| Coordination number | 8 |
| μ (Polarity) | 0 |
One example of the dodecahedral molecular geometry is the Mo(CN)4−
8 ion.[2]
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