| Literature DB >> 12203624 |
A J Boydston1, L Bondarenko, I Dix, T J Weakley, H Hopf, M M Haley.
Abstract
Enhanced global delocalization throughout the "stepped" π-electron systems of the [2.2]paracyclophane/dehydrobenzoannulene (PC/DBA) hybrids 1 and 2 is strongly suggested by a comparison of their electronic absorption spectra with those of model compounds with complete and interrupted classical aromatic delocalization. A distinct bathochromic shift (for 1) and greater absorption intensity at higher wavelengths (for 1 and 2) is observed versus the corresponding model hydrocarbons.Entities:
Keywords: alkynes; annulenes; aromaticity; cyclophanes; macrocycles
Year: 2001 PMID： 12203624 DOI： 10.1002/1521-3773(20010817)40:16<2986::AID-ANIE2986>3.0.CO;2-I
Source DB: PubMed Journal: Angew Chem Int Ed Engl ISSN： 1433-7851 Impact factor: 15.336