| Autor: |
Petrova, V. D., Rzhevskaya, N. N., Shcherbakova, N. V., Sangalov, Yu. A., Minsker, K. S. |
| Zdroj: |
Russian Chemical Bulletin; June 1978, Vol. 27 Issue: 6 p1194-1199, 6p |
| Abstrakt: |
1.In the reaction of (C2H5)2AlCl and C2H5AlCl2 with water (1:1 molar ratio) under mild conditions, donor-acceptor complexes are formed, in which the water molecule is coordinated by the aluminum atom. Sesquiethylaluminum chloride in its reaction with water behaves as a mixture of monochloro and dichloro derivatives.2.Benzene and toluene increase the tendency of ethylaluminum chlorides towards hydrolysis and, in the case of C2H5AlCl2 the Al-Cl2 and Al-C bonds are cleaved, whereas only the Al-C bond is cleaved in (C2H5)AlCl.3.The reaction of (C2H5)2AlCl and C2H5AlCl2 with water in diethyl ether is accompanied by the hydrolysis of Al-C bonds and leads to the etherates of the corresponding alumoxanes.4.The donor-acceptor complexes obtained are modified Lewis acids. The low acidity of these complexes explains their selectivity in electrophillc reactions. |
| Databáze: |
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