Английская Википедия:Aluminium ethoxide
Aluminium triethoxide (also aluminium ethoxide) is an metallo-organic compound with the empirical formula Шаблон:Chem2. It is a moisture-sensitive white powder.[1]
Properties
Aluminium triethoxide is slightly soluble in hot dimethyl benzene, chlorobenzene and other high boiling point non-polar solvents.[2] It hydrolyzes to aluminium hydroxide and ethanol:
Although the structure of aluminium triethoxide has not been established by X-ray crystallography, the related aluminium isopropoxide has a tetrameric structure as verified by NMR spectroscopy and X-ray crystallography. The species is described by the formula Al[(μ-O-i-Pr)2Al(O-i-Pr)2]3.[3][4] The unique central Al is octahedral, and three other Al centers adopt tetrahedral geometry. A
Applications
Aluminium triethoxide is used as a reducing agent for aldehydes and ketones, and is also used as a polymerization catalyst. Aluminium triethoxide is mainly used in Sol-Gel Process preparation of high purity aluminium sesquioxide, which is a polymerization agent. At the same time, it is used as a reducing reagent, for example, carbonyl compounds that restore to alcohol.Шаблон:Clarify
Synthesis
Aluminium triethoxide is produced by treating aluminium with anhydrous alcohol. The aluminium is often activated with iodine or by amalgamation to accelerate the reaction.[5][1]
Aluminium triethoxide has been evaluated as a catalyst for the synthesis of esters and carbonates.[6]
References
- ↑ 1,0 1,1 Шаблон:Cite book
- ↑ Шаблон:Cite Merck Index
- ↑ Шаблон:Cite journal
- ↑ Turova, N. Y.; Kozunov, V. A.; Yanovskii, A. I.; Bokii, N. G.; Struchkov, Yu T.; Tarnopolskii, B. L. (1979). "Physico-chemical and structural investigation of aluminium isopropoxide." J. Inorg. Nucl. Chem. 41(1): 5-11, Шаблон:Doi.
- ↑ Шаблон:Cite journal
- ↑ Шаблон:Cite journal
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