In chemistry and molecular physics, fluxional (or non-rigid) molecules are molecules that undergo dynamics such that some or all of their atoms interchange...

organic molecule due to the C−C and C=C bonds forming and breaking rapidly on the NMR timescale; this property makes it a fluxional molecule. The bullvalene...

to Mesomerism. Hückel molecular orbital theory Conjugated system Fluxional molecule Avoided crossing Goudard, N.; Carissan, Y.; Hagebaum-Reignier, D.;...

either tautomer is InChI=1S/C5H5NO/c7-5-3-1-2-4-6-5/h1-4H,(H,6,7). Fluxional molecule "tautomer". Oxford Dictionaries - English. Archived from the original...

ketone would absorb near 1700 cm−1. DMF is a classic example of a fluxional molecule. The ambient temperature 1H NMR spectrum shows two methyl signals...

kcal/mol. Pseudorotation Bailar twist Bartell mechanism Ray–Dutt twist Fluxional molecule "Pseudorotation". The IUPAC Compendium of Chemical Terminology. 2014...

calculations indicate that the compound's point group is C3v. It is a fluxional molecule. Oh is only insignificantly higher, indicating that the minimum on...

well.[citation needed] Bailar twist Ray–Dutt twist Bartell mechanism Fluxional molecule "Pseudorotation". The IUPAC Compendium of Chemical Terminology. 2014...

bound. The Fe-C-O linkages are each linear. Fe(CO)5 is the archetypal fluxional molecule due to the rapid interchange of the axial and equatorial CO groups...

notable as a mild Lewis acid and a fluoride ion acceptor. It is a fluxional molecule in which the axial (ax) and equatorial (eq) fluorine atoms interchange...

doi:10.1351/goldbook.S06214 Symmetry Numbers for Rigid, Flexible and Fluxional Molecules: Theory and Applications. M.K. Gilson and K. K. Irikura. J. Phys...

[CH3(H2)]+ (fluxional form, namely a molecule with one carbon atom covalently bonded to three hydrogen atoms and one dihydrogen molecule), bearing a +1...

Pseudorotation Bartell mechanism Berry mechanism Ray–Dutt twist Fluxional molecule "Bailar Twist" in Encyclopedia of Inorganic Chemistry, John Wiley...

Parikh-Doering oxidation, prediction of the existence of bullvalene as a fluxional molecule, and elucidation of the mechanism of the Baeyer–Villiger oxidation...

[1] Archived 2019-10-19 at the Wayback Machine, accessed 28 May 2014 Pseudorotation Bailar twist Berry mechanism Ray–Dutt twist Fluxional molecule v t e...

such groups can be used to classify the states of non-rigid (or fluxional) molecules that tunnel between equivalent geometries (called versions) and to...

4-cyclopentadien-1-yl)titanium. Molecules with polyhapto ligands are often fluxional, also known as stereochemically non-rigid. Two classes of fluxionality are prevalent...

chemical exchange reactions. The method is widely applicable to fluxional molecules. This magnetization transfer technique provides rates, provided that...

petroleum during primary thermal cracking (Haag-Dessau mechanism). Fluxional molecules More carbonium ions called non-classical ions are found in certain...

pyramidal inversion (also umbrella inversion) is a fluxional process in compounds with a pyramidal molecule, such as ammonia (NH3) "turns inside out". It is...

process. Pseudorotation Bailar twist Bartell mechanism Berry mechanism Fluxional molecule Indian Association for the Cultivation of Science (IACS) Ray, P.;...

bond length as an ordinary double bond. In solution, Fe(C8H8)2 is a fluxional molecule such that its 1H NMR spectrum consists of a singlet at room-temperature...

increase in inter-ligand repulsion. The dimer is a calculated to be a fluxional molecule rapidly inter-converting between a number of forms, all of which display...

established. Davis, Betty R.; Bernal, Ivan (1972). "Structure of a novel fluxional molecule: 1,2,3-trithia-[3]-ferrocenophane". Journal of Crystal and Molecular...

the barrier to pseudorotation almost vanishes (the system is highly "fluxional") which can be attributed to the fact that the 2nd-order coupling terms...

ISBN 0-205-05838-8 Rzepa, Henry S.; Cass, M.E.; Hii, K.K. "Mechanisms that Interchange Axial and Equatorial Atoms in Fluxional processes". Retrieved 2008-03-27. v t e...

allow alkylated derivatives to be manipulated selectively. Even more fluxional are the derivatives C5H5E(CH3)3 (E = Si, Ge, Sn), wherein the heavier...

February 2006). "Mechanisms that Interchange Axial and Equatorial Atoms in Fluxional processes: Illustration of the Berry Pseudorotation, the Turnstile and...

and has attracted interest for its fluxional structure. Trimethylsilyl cyclopentadiene is an example of a molecule that undergoes rapid sigmatropic rearrangement...

yields hepta-1,5-diene. The Cope rearrangement causes the fluxional states of the molecules in the bullvalene family. The Cope rearrangement is the prototypical...