The absorption spectrum of anisole and the anisole/CO2 1:1-cluster. The influence of intermolecular interaction on intramolecular vibrations

The origin of the corresponding electronic transition in the 1: 1-aggregate is blueshifted by 117 cm(-1) versus the 0-0 transition of anisole, the origine in the 1:2-agreggate is redshifted by 216 cm(-1). Probably a second conformer of the 1: 1-aggregate is formed in the molecular beam. 36 fundamental modes of the anisole/CO2 1:1-cluster out of possible 46 intramolecular modes are assigned. Spectral shifts of the fundamental modes in the S-1(1) state of anisole/CO2 due to the aggregation have been observed. The intermolecular modes and their binary combinations with intramolecular modes have been analyzed.