Coordination geometry

The coordination polyhedron is a term used in crystallography and chemistry, especially the complex and solid-state chemistry and describes the spatial arrangement of atoms, ions or molecules in the form of a polyhedron to an object it contains a central atom. It is formed when bound to the central atom particles one imagines connected by lines. The indication of the coordination polyhedron facilitates the description of crystal structures and complex compounds as there are several possibilities of spatial arrangement for most coordination numbers. For the coordination number (CN = engl. Coordination Number) CN = ​​6, the shape of a trigonal prism can occur, for example, in addition to the most common arrangement in the form of an octahedron.

CN = 6 as a trigonal prism