either of the two forms of a chemical compound that exhibits tautomerism
tautomer in American English
(ˈtɔtəmər)
noun
a substance exhibiting tautomerism
Word origin
back-form. < tautomerism
tautomer in American English
(ˈtɔtəmər)
noun
Chemistry
a compound that exhibits tautomerism
Word origin
[1900–05; back formation from tautomerism]This word is first recorded in the period 1900–05. Other words that entered Englishat around the same time include: burnout, cathode-ray tube, hydroplane, internship, throwaway
Examples of 'tautomer' in a sentence
tautomer
Strong electron-donating substituents were found to stabilize the ketimine tautomer.
Erkki Kolehmainen, Ryszard Gawinecki, Agnieszka Skotnicka, Przemysław Czeleń, ArtoValkonen 2013, 'Synthesis and Structural Characterization of Substituted 2-Phenacylbenzoxazoles',International Journal of Molecular Scienceshttp://www.mdpi.com/1422-0067/14/3/4444. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Further development will concentrate on improved tautomer consideration and an expanded stereocenter definition.
Volker D. Hähnke, Sunghwan Kim, Evan E. Bolton 2018, 'PubChem chemical structure standardization', Journal of Cheminformaticshttp://link.springer.com/article/10.1186/s13321-018-0293-8. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Structural data showed that all target compounds exist as the enamine tautomer.
Vu Van Vu, Trinh Thi Nhung, Nguyen Thi Thanh, Luu Van Chinh, Vu Dinh Tien, Vu ThuThuy, Do Thi Thao, Nguyen Hai Nam, Angela Koeckritz, Tran Khac Vu 2017, 'Synthesis and Biological Evaluation of New (−)-Gossypol-Derived Schiff Bases and Hydrazones',Journal of Chemistryhttp://dx.doi.org/10.1155/2017/3687182. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Our investigation shows that the thione tautomer of 2(a–d) and 3(a–d) dominates.
Aiman Ahmad, Himani Varshney, Abdul Rauf, Asif Sherwani, Mohammad Owais 2017, 'Synthesis and anticancer activity of long chain substituted 1,3,4-oxadiazol-2-thione,1,2,4-triazol-3-thione and 1,2,4-triazolo[3,4-b]-1,3,4-thiadiazine derivatives', Arabian Journal of Chemistryhttp://www.sciencedirect.com/science/article/pii/S1878535214000185. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
In the crystalline state, the molecule exists as the 7-hydroxy-5-oxo tautomer.
Waldemar Wysocki, Dariusz Matosiuk, Marzena Rządkowska, Zbigniew Karczmarzyk, ZofiaUrbańczyk-Lipkowska, Przemysław Kalicki 2010, '6-(2-Chlorobenzyl)-1-(4-chlorophenyl)-7-hydroxy-2,3-dihydro-1H-imidazo[1,2-a]pyrimidin-5-one',Acta Crystallographica Section Ehttp://scripts.iucr.org/cgi-bin/paper?S160053681003919X. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The asymmetric unit comprises a planar diketo tautomer and a solvent water molecule.
Gustavo Portalone 2008, 'Redetermination of orotic acid monohydrate', Acta Crystallographica Section Ehttp://scripts.iucr.org/cgi-bin/paper?S160053680800562X. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Two independent molecules comprise the asymmetric unit of the new polymorph and each of these existsas a thioamide–thione tautomer.
Mukesh M. Jotani, Chien Ing Yeo, Edward R. T. Tiekink 2017, 'A new monoclinic polymorph of N-(3-methylphenyl)ethoxycarbothioamide: crystal structureand Hirshfeld surface analysis', Acta Crystallographica Section E: Crystallographic Communicationshttp://scripts.iucr.org/cgi-bin/paper?S2056989017016280. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Our aim was to establish an alkyl homologue of 2 in order to achieve a carbenic tautomer of higher donicity.
Charlotte Thie, Clemens Bruhn, Michael Leibold, Ulrich Siemeling 2017, 'Coinage Metal Complexes of the Carbenic Tautomer of a Conjugated Mesomeric BetaineAkin to Nitron', Moleculeshttps://www.mdpi.com/1420-3049/22/7/1133. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)