Syntheses and PE-Spectroscopic Investigations of 2,6- and 3,5-Bridged 1,4-Dimethylidenecyclohexanes |
| |
| Authors: | Teh-Chang Chou,Holger Lange,Rolf Gleiter,Tibor G gh,Miroslav Krí ,Max H. Pfenninger,Marian Valentí ny,Camille Ganter |
| |
| Affiliation: | Teh-Chang Chou,Holger Lange,Rolf Gleiter,Tibor Gögh,Miroslav Kríž,Max H. Pfenninger,Marian Valentíny,Camille Ganter |
| |
| Abstract: | Three 1,4-dimethylidenecyclohexanes, bridged in the 2,6- and 3,5-positions by two ethano ( 4 ), one ethano and one propano ( 5 ), and two propano bridges ( 6 ) have been synthesized. The interaction of the two exocyclic methylidene groups has been investigated by He(I) photoelectron (PE) spectroscopy. It revealed a slightly larger energy difference (0.8 eV) for 4 and 5 as compared to the parent 1,4-dimethylidenecyclohexane ( 7 ) (0.7 eV). The interpretation of the PE spectra was based on the comparison with PE data of related systems and with the results of semiempirical calculations on 4–6 . |
| |
| Keywords: | |
|
|
