tautomer
/ˈtɔːtəmə
/noun Chemistry
Each of two or more isomers of a compound which exist together in equilibrium, and are readily interchanged by migration of an atom or group within the molecule.These structures are called tautomers, which exist in dynamic equilibrium with each other....
- Earlier studies also support the fact that phenolic compounds could convert to different tautomers, quinone, ketone and dimers at higher pH in the presence of oxidative species.
- In our previous study on vibrational relaxation in HRP the relaxation time varied in the range of 1-10 ps for different vibrational modes of pyrrole tautomers of the chromophore.
Derivatives
tautomeric
- That is, regardless of the tautomeric form in which the molecule finds itself there is always conserved an aromatic core to which is attached a hydroxyl group peri to a carbonyl group.
- Point mutations, for example, can be due to tautomeric shift (a movement of hydrogen atoms that changes the properties of bonding).
- This is corroborated by the fact that the interconversion between A 1 and A 3 is very fast at room temperature, which cannot be explained by a simple tautomeric conversion.
tautomerism
- This is tautomerism, where two isomers exist in dynamic equilibrium with each other.
- The same is true of tautomerism in aromatic molecules.
- As explained earlier, curcumin exists in keto-enol tautomerism; these tautomeric equilibria both in the ground and in the excited states can be influenced by the solvent protons.
Origin
Early 20th century: blend of tauto- 'same' and isomer.