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Reference.org
Dodecahedral molecular geometry
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<p>In <a href="/facts/Chemistry/SrNqkGVm">chemistry</a>, 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 <a href="/facts/Snub_disphenoid/kdLUzB07">snub disphenoid</a> (also known as a trigonal dodecahedron). This shape has D2d <a href="/facts/Molecular_symmetry/BrDxAkTK">symmetry</a> and is one of the three common shapes for octacoordinate transition metal complexes, along with the <a href="/facts/Square_antiprismatic_molecular_geometry/S6WjrNMQ">square antiprism</a> and the <a href="/facts/Bicapped_trigonal_prismatic_molecular_geometry/KVt2KVyD">bicapped trigonal prism</a>. </p><p>One example of the dodecahedral molecular geometry is the Mo(CN)4−8 ion. </p>