Conclusions
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1.
Employing UV spectroscopy and cryoscopy, it was shown that benzophenone forms two different complexes with aluminum bromide: (C6H5)2CO·AlBr3 and (C6H5)2CO·2AlBr3.
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2.
A charge-transfer band, with a maximum at 440 nm, was detected in the UV spectrum of the complex: (C6H5)2CO·2AlBr3.
Literature cited
G. Briegleb, Elektronen-Donator-Acceptor-Komplexe, Berlin (1961).
E. N. Gur'yanova, I. P. Gol'dshtein, and I. P. Romm, in: The Donor-Acceptor Bond [in Russian], Chapters II and III, Khimiya (1973).
R. S. Becker, J. Mol. Spectry.,3, 1 (1959).
I. P. Romm, E. N. Gur'yanova, E. N. Kharlamova, R. R. Shifrina, N. N. Shapet'ko, and K. A. Kocheshkov, Dokl. Akad. Nauk SSSR,189, 810 (1969); I. P. Romm, E. N. Kharlamova, and E. N. Gur'yanova, Zh. Obshch. Khim.,42, 2246 (1972).
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 12, pp. 2783–2784, December, 1973.
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Romm, I.P., Belen'kii, L.I. & Gur'yanova, E.N. Charge-transfer band in spectrum of aluminum bromide complex with benzophenone. Russ Chem Bull 22, 2717–2718 (1973). https://doi.org/10.1007/BF00926146
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DOI: https://doi.org/10.1007/BF00926146