In chemistry, a hypervalent molecule (the phenomenon is sometimes colloquially known as expanded octet) is a molecule that contains one or more main group...

definitively excluding the role of d-orbital hybridisation in bonding in hypervalent compounds of second-row (period 3) elements, ending a point of contention...

attain this configuration in compounds. There are, however, some hypervalent molecules in which the 3d level may play a part in the bonding, although this...

4-electron (3c–4e) bond is a model used to explain bonding in certain hypervalent molecules such as tetratomic and hexatomic interhalogen compounds, sulfur...

of six fluorine atoms attached to a central sulfur atom. It is a hypervalent molecule.[citation needed] Typical for a nonpolar gas, SF 6 is poorly soluble...

violently with water to produce highly corrosive sulfuric acid. Hypervalent molecule Sulfur trioxide pyridine complex Greenwood, Norman N.; Earnshaw,...

participation of d orbitals is unimportant, and the bonding of so-called hypervalent molecules are, for the most part, better explained by charge-separated contributing...

known to medieval alchemists as "volatile spirit of sulfur". SO2 is a bent molecule with C2v symmetry point group. A valence bond theory approach considering...

used by many force fields, and allows the VALBOND method to handle hypervalent molecules and transition metal complexes. The VALBOND energy term has been...

Gaseous and molten PCl5 is a neutral molecule with trigonal bipyramidal geometry and (D3h) symmetry. The hypervalent nature of this species (as well as...

fundamental contributions in polymer science. Beta-lactam Carbene Hypervalent molecule Polyoxymethylene Pyrethrin Triphenylphosphine phenylimide Heidegger...

iodine-atom. In the molecular orbital model, a common explanation for the hypervalent bonding on the central iodine involves a three-center four-electron bond...

solid that easily undergoes sublimation. The compound is an example of a hypervalent sulfur compound called a sulfurane. As such, the sulfur adopts a see-saw...

types of organic synthesis as an efficient catalyst. Stannatrane Hypervalent molecule Voronkov, Mikhail G.; Baryshok, Viktor P. "Atranes - a new generation...

of acetylacetone (2,4-pentanedione)). AXE method Square pyramid Hypervalent molecule Molecular geometry Spiro, Thomas G.; Terzis, Aristides; Raymond,...

in the periodic table.) Lower-period elements, however, may form hypervalent molecules, such as phosphorus pentafluoride or sulfur hexafluoride. The reactivity...

3 pm and S–Feq = 154.2 pm. It is typical for the axial ligands in hypervalent molecules to be bonded less strongly. The 19F NMR spectrum of SF4 reveals...

These are the hypervalent organoiodines, often called iodanes after the IUPAC rule used to name them. These iodine compounds are hypervalent because the...

rearrangement 2,3-Wittig rearrangement Directed ortho metalation Ate complex Hypervalent molecule Potassium tetraphenylborate Awards Otto Hahn Prize for Chemistry...

also be moved in the same way to create resonance structures for hypervalent molecules such as sulfur hexafluoride, which is the correct description according...

electronegativity of the two bonded atoms. Pauling also considered hypervalent molecules, in which main-group elements have apparent valences greater than...

in a large scale rocket propulsion system. Chlorine trifluoride Hypervalent molecule Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements...

Noury, S.; Silvi, B.; Gillespie, R. J. (2002). "Chemical Bonding in Hypervalent Molecules: Is the Octet Rule Relevant?" (PDF). Inorganic Chemistry. 41 (8):...

Tetraethylammonium trichloride (also known as Mioskowski reagent) is a chemical compound with the formula [NEt4][Cl3] consisting of a tetraethylammonium...

discovered in 1934 by Denbigh and Whytlaw-Gray. Each sulfur atom of the S2F10 molecule is octahedral, and surrounded by five fluorine atoms and one sulfur atom...

p-orbitals with delocalized electrons in a molecule, which in general lowers the overall energy of the molecule and increases stability. It is conventionally...

than predicted by the octet rule, as explained in the article on hypervalent molecules. The mechanisms of their reactions differ from organic compounds...

phenyl groups all appear to be equivalent. This is probably because the molecule is not stable in shape and orientation of phenyl changes rapidly. Solid...

Markku R. (1999). "Chemical Bonding in Hypervalent Molecules Revised. 2. Application of the Atoms in Molecules Theory to Y2XZ and Y2XZ2 (Y = H, F, CH3;...

bipyramidal structure, with D5h symmetry, as predicted by VSEPR theory. The molecule can undergo a pseudorotational rearrangement called the Bartell mechanism...