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.[1][2]
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 AX6E1 molecules such as xenon hexafluoride (XeF6) is a variant of this geometry, with the lone pair occupying the "cap" position.
^Roald. Hoffmann; Barbara F. Beier; Earl L. Muetterties; Angelo R. Rossi (1977). "Seven-coordination. A molecular orbital exploration of structure, stereochemistry, and reaction dynamics". Inorganic Chemistry. 16 (3): 511–522. doi:10.1021/ic50169a002.
^Kaupp, Martin (2001). ""Non-VSEPR" Structures and Bonding in d(0) Systems". Angew Chem Int Ed Engl. 40 (1): 3534–3565. doi:10.1002/1521-3773(20011001)40:19<3534::AID-ANIE3534>3.0.CO;2-#. PMID 11592184.
^Zhenyang Lin; Ian Bytheway (1996). "Stereochemistry of Seven-Coordinate Main Group and d0 Transition Metal Molecules". Inorganic Chemistry. 35 (3): 594–603. doi:10.1021/ic950271o.
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In chemistry, octahedralmoleculargeometry, also called square bipyramidal, describes the shape of compounds with six atoms or groups of atoms or ligands...
In chemistry, the cappedoctahedralmoleculargeometry describes the shape of compounds where seven atoms or groups of atoms or ligands are arranged around...
high as 20 in Th(η5-C5H5)4. One of the most common coordination geometries is octahedral, where six ligands are coordinated to the metal in a symmetrical...
energy (less stable) the molecule is. Therefore, the VSEPR-predicted moleculargeometry of a molecule is the one that has as little of this repulsion as possible...
five-coordination Cappedoctahedral or capped trigonal prismatic for seven-coordination Dodecahedral or bicapped trigonal prismatic for eight-coordination Capped square...
trigonal prismatic geometry is unusual in that the vast majority of six-coordinate organometallic compounds adopt octahedralmoleculargeometry. In the initial...
different atoms. Hybrid orbitals are useful in the explanation of moleculargeometry and atomic bonding properties and are symmetrically disposed in space...
indicate the approximate geometry of the coordinating atoms around the central atom. One or more italicised letters indicate the geometry, e.g. TP-3 which is...
their energies) can thus be predicted. For example, the CO ligands of octahedral complexes, such as Cr(CO)6, transform as a1g, eg, and t1u, but only the...
complexes with an octahedralmoleculargeometry the tridentate tripod ligands occupy one face, leading to a fixed facial (or fac) geometry. The tetradentate...
core has octahedral symmetry, point group Oh. The aqua ions of gallium(III), indium(III) and thallium(III) are also six-coordinate octahedral. The coordination...
nitroprusside anion, [Fe(CN)5NO]2−, an octahedral complex containing a "linear NO" ligand. trans-[Co(en)2(NO)Cl]+, an octahedral complex containing a "bent NO"...
Ru(−4), and Os(−4) have been observed in metal-rich compounds containing octahedral complexes [MIn6−xSnx]; Pt(−3) (as a dimeric anion [Pt–Pt]6−), Cu(−2),...
flattened octahedral shape. Cu+Ar7 is much less stable, and the seventh argon atom is outside an inner shell of six argon atoms. This is called capped octahedral...
tetrahedron with face-capping chlorines and three terminal chlorines per tellurium atom, giving each tellurium atom a distorted octahedral environment TeCl4...
tetracoordinate tetrahedral aqueous ion [Ag(H2O)4]+ is known, but the characteristic geometry for the Ag+ cation is 2-coordinate linear. For example, silver chloride...
characterized metal heptafluoride, is a low-melting molecular solid with pentagonal bipyramidal moleculargeometry. Metal fluorides with more fluorine atoms are...
Ru(−4), and Os(−4) have been observed in metal-rich compounds containing octahedral complexes [MIn6−xSnx]; Pt(−3) (as a dimeric anion [Pt–Pt]6−), Cu(−2),...
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