Conclusions
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1.
The hydrogen-halide exchange reaction between the tetra- and trihalides of the Group IVB elements bears a general character, while the Group IVB elements fall into the series Si, C, Ge, Sn, in which compounds of the HEX3 type of each of the elements are capable in the presence of a tertiary aliphatic amine of reducing the tetrahalides of each subsequent element.
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2.
The complexes (C2H5)3N-HECl3 (E = Si, Ge, Sn) reduce nitrobenzene to aniline in 60–90% yield.
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3.
A convenient method was found for obtaining the aminates (C2H5)3N. HSnX3 (X = Cl, Br), which is based on the reaction of triethylamine hydrochloride or the hydrobromide with either SnCl2 or SnB2.
Literature cited
N. S. Nametkin, V. K. Korolev, and O. V. Kuz'min, Dokl. Akad. Nauk SSSR,205, 111 (1972).
R. A. Benkesser, Accounts Chem. Res.,4, No. 3, 94 (1971).
O. M. Nefedov, S. P. Kolesnikov, and N. N. Makhova, Izv. Akad. Nauk SSSR, Ser. Khim., 2224 (1964).
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 3, pp. 676–678, March, 1978.
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Nametkin, N.S., Kuz'min, O.V., Korolev, V.K. et al. Reducing properties of aminates (C2H5)3N·HECl3 (E=C, Si, Ge, Sn). Russ Chem Bull 27, 583–584 (1978). https://doi.org/10.1007/BF00923945
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DOI: https://doi.org/10.1007/BF00923945