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- W1982207312 abstract "The recent interesting discovery of sodium-ethyl and potassium-ethyl by Mr. Wanklyn, led me to investigate the cause of the non-formation of these bodies by reactions analogous to those successfully used for the production of zinc-ethyl and similar organo-metallic compounds. In my earlier experiments upon the isolation of the organic radicals, I studied the action of potassium and sodium upon iodide of ethyl, and found that the latter compound was readily decomposed by either of the metals at a temperature of from 100° to 130° C. The separated ethyl was, however, transformed almost completely into hydride of ethyl and olefiant gas, whilst not a trace of potassium-ethyl or sodium-ethyl was produced. Mr. Wanklyn has since repeated this experiment with the addition of ether, and has obtained the same result as regards the non-formation of an organometallic compound. The temperature at which sodium decomposes iodide of ethyl is much lower than that at which sodium-ethyl is broken up, consequently no explanation of the phenomenon can be obtained from this source. In his observations on the formation of ethyl, Brodie mentions that iodide of ethyl is decomposed at 170° C. by zinc-ethyl; and it therefore occurred to me that sodium-ethyl, owing to its more powerful affinities, might effect the decomposition of iodide of ethyl at a lower temperature than that at which iodide of ethyl is decomposed by sodium; in which case the production of sodium-ethyl, by the action of sodium upon iodide of ethyl, would be an impossibility. Experiment completely confirmed this anticipation. A quantity of a strong solution of sodium-ethyl in zinc-ethyl was thrown up into a dry receiver filled with mercury, and an equal volume of pure iodide of ethyl added to it. Immediately on the mixture of the two liquids, a lively effervescence set in, a considerable quantity of gas collected in the receiver, and a white deposit of iodide of sodium rendered the liquid thick and turbid. The reaction was complete in two or three minutes without the application of heat. An analysis of the gas, previously freed from the vapours of iodide of ethyl and zinc-ethyl, showed it to consist of equal volumes of hydride of ethyl and olefiant gas, mixed only with a mere trace of ethyl. This reaction may therefore be thus expressed:— C 4 H 5 Na + C 4 H 5 I = NaI + C 4 H 5 H } C 4 H 4 ." @default.
- W1982207312 created "2016-06-24" @default.
- W1982207312 date "1859-12-31" @default.
- W1982207312 modified "2023-09-26" @default.
- W1982207312 title "XXIII. Note on sodium-ethyl and potassium-ethyl" @default.
- W1982207312 doi "https://doi.org/10.1098/rspl.1857.0085" @default.
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