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what does ethers mean

Referred to as 'akasha' in Sanskrit, ether is the element that comes first in yogic and Ayurvedic thinking. Ether is without the firmness of earth, the coolness. NounEdit (uncountable, literary or poetic) The substance formerly supposed to fill the upper regions of the atmosphere above the clouds, in particular as a. Ether definition, a colorless, highly volatile, flammable liquid, C4H10O, having an aromatic odor and sweet, burning taste, derived from ethyl alcohol by. BETTER PLACE WALLY PARK

A volatile, highly flammable liquid, C4H10O, derived from distilling ethyl alcohol with sulfuric acid, used as a reagent and solvent, and formerly used as an anesthetic. Also called diethyl ether, ethyl ether. The regions of space beyond the earth's atmosphere; the heavens. The element believed in ancient and medieval civilizations to fill all space above the sphere of the moon and to compose the stars and planets.

Physics An all-pervading, infinitely elastic, massless medium formerly postulated as the medium of propagation of electromagnetic waves. All rights reserved. General Physics the ether the hypothetical medium formerly believed to fill all space and to support the propagation of electromagnetic waves 4. Also called ethyl ether. There fields of light and liquid ether flow. In chimistry, a very light, volatile and inflammable fluid, produced by the distillation of alcohol or rectified spirit of wine, with an acid.

It is lighter than alcohol, of a strong sweet smell, susceptible of great expansion, and of a pungent taste. It is so volatile, that when shaken it is dissipated in an instant. Formed of ether; containing or filled with ether; as ethereal space; ethereal regions. Heavenly; celestial; as ethereal messenger.

Consisting of ether or spirit.

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Interestingly, the structures of both ether and alcohol are similar to the structure of water molecules. This is because, in alcohol, one hydrogen atom of a water molecule is replaced by an alkyl group and in the case of ethers both hydrogen atoms of water molecules are replaced by an alkyl or aryl group. Note: Ether does not possess a hydroxyl group, unlike alcohols and phenols.

Those alkyl groups are listed in alphabetical order. Naming for ethers adopted by IUPAC uses a more complex group as the root name, with the oxygen atom and the smaller group named as an alkoxy substituent. Example: ethoxyethane diethyl ether , methoxy ethane methyl ethyl ether , 2-methoxymethylpropane methyl tert-butyl ether , phenoxy benzene diphenyl ether.

This IUPAC nomenclature is very useful for naming compounds with additional functional groups because these functional groups can be described in the root name. Example: Methyl becomes methoxy and ethyl becomes an ethoxy group. Rule 3: Alkoxy name is placed with a locator number in front of the base chain name.

Example: 1. The most common industrial methods for preparing ethers are: Dehydration of Alcohols Alcohol undergoes dehydration in the presence of protic acids sulphuric acid, phosphoric acid to produce alkenes and ethers under different conditions. The formation of the reaction product depends on the reaction conditions.

For example, ethanol is dehydrated to ethene at K in the presence of sulphuric acid. On the other hand, ethanol yields ethoxyethane in the presence of sulphuric acid at K. The formation of ethers by dehydration of an alcohol is a nucleophilic bimolecular reaction. That is, here the alcohol acts as a nucleophile which means it involves the attack of alcohol molecule on a protonated alcohol as shown below This method is used for the preparation of ethers having primary alkyl groups.

To synthesize ethers in this way, the alkyl group should be unhindered and must be kept at a low temperature or else the reaction will give rise to alkenes. Read More: Electrophiles and Nucleophiles Williamson Synthesis This is an important method for the preparation of symmetrical and asymmetrical ethers in laboratories. In Williamson synthesis, an alkyl halide is made to react with sodium alkoxide which leads to the formation of ether.

Example: This reaction involves an SN2 attack of an alkoxide ion on an alkyl halide. We know that alkoxides are very strong bases and they react steadily with alkyl halides and thus they take part in elimination reactions. In the case of primary alkyl halides, Williamson synthesis shows higher productivity.

Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. But on the other hand, ethers undergo cleavage by reaction with acids. The prominent chemical reactions of ethers are as follows; Cleavage Of C-o Bonds In Ethers Cleavage of C-O bonds in ether takes place in excess hydrogen halide which are acidic under extreme conditions like in concentrated acids usually HBr and HI and high temperatures.

For example, the reaction of dialkyl ether produces, initially, an alkyl halide and alcohol. This alcohol further reacts with halide to form a second mole of alkyl halide and water. An element more fine and subtle than air; air refined or sublimed. If any one should suppose that ether, like our air, may contain particles which endeavour to recede from one another; for I do not know what this ether is; and that its particles are exceedingly smaller than those of air, or even than those of light, the exceeding smallness of its particles may contribute to the greatness of the force, by which those particles may recede from one another.

Isaac Newton, Opt. The parts of other bodies are held together by the eternal pressure of the ether, and can have no other conceivable cause of their cohesion and union. John Locke. The matter of the highest regions above. Webster Dictionary 5. It is powerful solvent of fats, resins, and pyroxylin, but finds its chief use as an anaesthetic. Called also ethyl oxide Ethernoun any similar oxide of hydrocarbon radicals; as, amyl ether; valeric ether Etymology: [L.

A typical example is the solvent and anesthetic diethyl ether, commonly referred to simply as "ether". Ethers are common in organic chemistry and pervasive in biochemistry, as they are common linkages in carbohydrates and lignin. Chambers 20th Century Dictionary 4. Ether a subtle element presumed to pervade all interstellar space, vibrations in which are assumed to account for the transmission of light and all radiant energy. The Standard Electrical Dictionary 0. Light is theoretically due to transverse vibrations of the ether.

Since the days of Young the conception of the ether has extended, and now light, "radiant heat," and electricity are all treated as phenomena of the ether. Electrical attraction and repulsion are explained by considering them due to local stresses in the ether; magnetic phenomena as due to local whirlpools therein.

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Akasha: The Most Mysterious of the Five Elements - Sadhguru

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