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In chemistry, octahedral molecular geometry, also called square bipyramidal, [1] describes the shape of compounds with six atoms or groups of atoms or ligands symmetrically arranged around a central atom, defining the vertices of an octahedron. The octahedron has eight faces, hence the prefix octa.
Octahedral: Octa-signifies eight, and -hedral relates to a face of a solid, so "octahedral" means "having eight faces". The bond angle is 90 degrees. For example, sulfur hexafluoride (SF 6) is an octahedral molecule. Trigonal pyramidal: A trigonal pyramidal molecule has a pyramid-like shape with a triangular base. Unlike the linear and trigonal ...
Examples of the capped octahedral molecular geometry are the heptafluoromolybdate (MoF − 7) and the heptafluorotungstate (WF − 7) ions. [3] [4] The "distorted octahedral geometry" exhibited by some AX 6 E 1 molecules such as xenon hexafluoride (XeF 6) is a variant of this geometry, with the lone pair occupying the "cap" position.
The coordination geometry of an atom is the geometrical pattern defined by the atoms around the central atom. The term is commonly applied in the field of inorganic chemistry, where diverse structures are observed. The coordination geometry depends on the number, not the type, of ligands bonded to the metal centre as well as their locations.
Natural crystals of diamond, alum or fluorite are commonly octahedral, as the space-filling tetrahedral-octahedral honeycomb. The plates of kamacite alloy in octahedrite meteorites are arranged paralleling the eight faces of an octahedron. Many metal ions coordinate six ligands in an octahedral or distorted octahedral configuration.
Co(NH 3) 6] 3+, which features 6-coordinate metal centre with octahedral molecular geometry. Chloro(triphenylphosphine)gold(I), which features 2-coordinate metal centre. In chemistry, coordination number, defined originally in 1893 by Alfred Werner, is the total number of neighbors of a central atom in a molecule or ion.
Octahedral molecular geometry is a common structural motif for homoleptic metal chloride complexes. Examples include MCl 6 (M = Mo, W), ...
An octahedral compound is a chemical compound having an octahedral molecular geometry. Pages in category "Octahedral compounds" The following 29 pages are in this category, out of 29 total.