| Abstract: | Low energy singlet and triplet states for a series of 2
n
]cyclophanes are discussed in terms of the results of a simple model calculation. Experimental trends can be explained under the assumption of significant  - interaction involving the saturated bridges. This interaction destabilizes low energy  excimer states, in contrast to the usual red shift observed for alkylbenzenes. The observed near-constancy of the onset of the absorption spectra can be explained by near-cancelation of through-bond and through-space contributions.From 01.01.1984, Royal Danish School of Educational Studies, Department of Chemistry, DK-2400 Copenhagen NV, Denmark |
