Capped octahedral molecular geometry
In chemistry, the capped octahedral molecular geometry describes the shape of compounds where seven atoms or groups of atoms or ligands are arranged around a central atom defining the vertices of a gyroelongated triangular pyramid. This shape has C3v symmetry and is one of the three common shapes for heptacoordinate transition metal complexes, along with the pentagonal bipyramid and the capped trigonal prism.
Examples of the capped octahedral molecular geometry are the heptafluoromolybdate and the heptafluorotungstate ions.
The "distorted octahedral geometry" exhibited by some AX6E1 molecules such as xenon hexafluoride is a variant of this geometry, with the lone pair occupying the "cap" position.
