When there are six ligands, the geometry of the complex is almost always octahedral, like the geometry of SF 6 , or of [Cr(H 2 O) 6 ] 3+ . All ligands are equidistant from the central atom, and all li...When there are six ligands, the geometry of the complex is almost always octahedral, like the geometry of SF 6 , or of [Cr(H 2 O) 6 ] 3+ . All ligands are equidistant from the central atom, and all ligand-metal-ligand angles are 90°. An octahedral complex may also be thought of as being derived from a square planar structure by adding a fifth ligand above and a sixth below on a line through the central metal ion and perpendicular to the plane.
