СИНТЕЗ МЕРКАРБИДА ИЗ РАЗЛИЧНЫХ ИСТОЧНИКОВ
Електронний архів E-archive DonNTU – (Electronic archive Donetsk National Technical University)
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| Title |
СИНТЕЗ МЕРКАРБИДА ИЗ РАЗЛИЧНЫХ ИСТОЧНИКОВ
SINTHESIS OF MERCARBIDE FROM VARIOUS SOURCES |
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| Creator |
Капустина, Елена Валентиновна
Капустин, Алексей Евгеньевич Снитко, Марина Петровна |
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| Subject |
альдольная конденсация
селективность меркарбид синтез меркурирование aldol condensation selectivity mercarbide synthesis mercuration |
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| Description |
Рассмотрены различные методы синтеза меркарбида, ртутьорганического соединения, у которого все протоны, связанные с атомом углерода, замещены атомами ртути, из различных исходных веществ. Обсуждены механизмы реакций, причины, влияющие на селективность процессов.
Mercarbide is unique solid base, organic mercury compound in which all the protons associated with the carbon atoms replaced by mercury. Mercarbide is absolutely unique compound with surprising stability. It does not react with acids and bases, stable to oxidants and reducers. Even prolonged heating in aqua regia does not lead to visible changes in its structure. The structure of mercarbide is a dual polymer consisting of different monomer units: [OHg3CCHO]+ and +H2OHg—. Mercarbide can be obtained from a variety of organic compounds - alcohols, aldehydes, alkenes. At the first, there is a reduction of mercury oxide. Then metallic mercury generates the aldehyde, which then react sequence to form trimercuraldehyde. Then aldehydes are oxidized to the corresponding acids and partially restored by metallic mercury to alcohol - in the reaction products we observed monoesters and full esters of acetic acid and ethylene glycol. The mechanism of mercarbide formation from alcohol is a step displacement of protons. Trimercurated product may undergo further mercuration to tetramercurmethane and hexamercurethane. One can observed the formation of products of varying degrees of carbon mercuration. Parallel Formation of ethane and methane derivatives gives reason to offer a variety of mercarbide structures. In fact, the formation of polymeric compounds, dominated in the structure of a tetrahedral arrangement of four atoms of mercury around the carbon atoms. The inability to obtain mercarbide from methanol is that the reaction begins with the oxidation of alcohols to aldehydes, and in the case of methanol, formaldehyde is formed. In alkaline solution the reaction of self-condensation of formaldehyde take place. |
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| Date |
2013-04-13T13:45:03Z
2013-04-13T13:45:03Z 2013 |
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| Type |
Article
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| Identifier |
2074-6652
УДК 547-1+543-93 http://ea.donntu.edu.ua/handle/123456789/18471 |
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| Relation |
Наукові праці ДонНТУ;Серія: Хімія і хімічна технологія, 2013. - Вип.2(21). - С.119-128
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| Publisher |
Донецк, ДонНТУ
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