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Bromoethane, also known as ethyl bromide, is a chemical compound of the haloalkanes group. It is abbreviated by chemists as EtBr (which is also used as an abbreviation for ethidium bromide ). This volatile compound has an ether-like odor.
For example, with bromoethane and sodium hydroxide (NaOH) in ethanol, the hydroxide ion HO − abstracts a hydrogen atom. A Bromide ion is then lost, resulting in ethene, H 2 O and NaBr. Thus, haloalkanes can be converted to alkenes. Similarly, dihaloalkanes can be converted to alkynes.
In the example, there is a bromo-substituted -CH 2-CH 2 - subunit. 1-Bromoethane-1,2-diyl is chosen in preference to 2- bromoethane-1,2-diyl as the former has a lower locant for the bromo-substituent. The preferred CRU is therefore oxy(1-bromoethane-1,2-diyl) and the polymer is thus named poly[oxy(1-bromoethane-1,2-diyl)].
Ethyl group (highlighted blue) as part of a molecule, as the ethyl radical, and in the compounds ethanol, bromoethane, ethyl acetate, and ethyl methyl ether.. In organic chemistry, an ethyl group (abbr. Et) is an alkyl substituent with the formula −CH 2 CH 3, derived from ethane (C 2 H 6).
For example, ethene + bromine → 1,2-dibromoethane: C 2 H 4 + Br 2 → BrCH 2 CH 2 Br. This takes the form of 3 main steps shown below; [3] Forming of a π-complex The electrophilic Br-Br molecule interacts with electron-rich alkene molecule to form a π-complex 1. Forming of a three-membered bromonium ion
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This facilitates the sequential dechlorination of PCE and TCE into noxious cis-dichloroethene (DCE) and Vinyl chloride (VC), which then suit as electron acceptors for the full dechlorination into innocuous ethene. [14] A wide array of bacteria across different genera have the capacity to partially dechlorinate PCE and TCE into cis-DCE and VC. [14]
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