Editing Adenine (section)

== Structure ==
Adenine forms several [[tautomer]]s, compounds that can be rapidly interconverted and are often considered equivalent. However, in isolated conditions, i.e. in an inert gas matrix and in the gas phase, mainly the 9H-adenine tautomer is found.<ref>{{Cite journal
|journal =Phys. Chem. Chem. Phys.
|year =2002
|volume =4
|issue =20
|pages =4877–4882
|title =Tautomers and electronic states of jet-cooled adenine investigated by double resonance spectroscopy
|author =Plützer, Chr. |author2=Kleinermanns, K.
|bibcode =2002PCCP....4.4877P
|doi =10.1039/b204595h
}}</ref><ref>{{Cite journal
|title = Experimental matrix isolation and theoretical ab initio HF/6-31G(d, p) studies of infrared spectra of purine, adenine and 2-chloroadenine
|journal = Spectrochimica Acta Part A: Molecular Spectroscopy
|volume = 50
|pages = 1081–1094
|year = 1994
|issn = 0584-8539
|doi = 10.1016/0584-8539(94)80030-8
|author1=M. J. Nowak |author2=H. Rostkowska |author3=L. Lapinski |author4=J. S. Kwiatkowski |author5=J. Leszczynski |issue = 6
|bibcode = 1994AcSpA..50.1081N }}</ref>