Conclusions
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1.
The electronic absorption and emission spectra were obtained for 10 aromatic derivatives of lithium, boron, aluminum, and gallium in inert and electron-donor solvents at 295 and 77°K.
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2.
The observed intense long-wave bands, the parameters of which depend on the element, structure of the aromatic radical, and donor capacity of the solvent, were assigned to electronic transitions in the aromatic system, perturbed by intra- and intermolecular charge transfer with the participation of the free p orbitals of the element.
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3.
A decrease was detected in the total fluorescent capacity of the molecules studied with increasing atomic number of the element, which was explained by the effect of the heavy atom and the increase in the probability of various emissionless processes, including photodissociation of the molecules at the C-M bond.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 9, pp. 1993–1998, September, 1975.
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Rogozhin, K.L., Rodionov, A.N., Shigorin, D.N. et al. Electronic spectra and structure of aromatic derivatives of lithium, boron, aluminum, and gallium. Russ Chem Bull 24, 1874–1878 (1975). https://doi.org/10.1007/BF00930155
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DOI: https://doi.org/10.1007/BF00930155