Journalartikel
Autorenliste: Maier, G; Senger, S
Jahr der Veröffentlichung: 1999
Seiten: 1291-1294
Zeitschrift: European Journal of Organic Chemistry
Bandnummer: 1999
Heftnummer: 6
ISSN: 1434-193X
eISSN: 1099-0690
Verlag: Wiley
Abstract:
Bicyclopropylidene (3) and 1,2-dimethylenecyclobutane (7) have been irradiated in rare-gas matrices. If 1,2-dimethylenecyclobutane (7) is exposed to the light of a KrF excimer laser (lambda = 248 nm), an isomeric species is produced, showing an absorption at 793.1 cm(-1) (argon matrix) or 791.2 cm(-1) (xenon matrix) in the IR spectrum. The back reaction can be induced with light of lambda = 254 nm. This photochemical interconversion, together with the comparison between the experimental and calculated band positions, supports the assignment of the IR absorption near 790 cm(-1) to tetramethyleneethane (5).
Zitierstile
Schlagwörter
1,2,4,5-TETRAMETHYLENEBENZENE; diradicals; IR spectroscopy; isomerizations; METHYLENECYCLOPROPANE; TRIMETHYLENEMETHANE