摘要:
Low-temperature IR spectroscopy was used to study intermolecular interactions in the aluminium chloride-nitrobenzene system. The 1 : 1, 2 : 1, and I : 2 molecular complexes of aluminium chloride with nitrobenzene were discovered. The spectral parameters were found to correlate with the structure of the complexes and their thermal stability. Above 170 K, the 1 : 2 complexes become unstable and self-ionize to give particles with the general formula [AlCl2(RNO2)(m)]+AlCl4-. The quantum-chemical calculations carried out at the HF/6-31G level confirm the existence of three types of molecular complexes of 1 : 1, 2 : 1, and 1 : 2 composition. The structure of the title complexes was proposed on the basis of spectral parameters and calculation results.