Ethyl magnesium bromide

Structural formula
General
Surname	Ethyl magnesium bromide
other names	Bromoethylmagnesium
Molecular formula	C 2 H 5 BrMg
External identifiers / databases
CAS number 925-90-6 EC number 213-127-3 ECHA InfoCard 100,011,935 PubChem 101914 Wikidata Q5404502
properties
Molar mass	133.28 g mol −1
safety instructions
GHS hazard labeling no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Ethyl magnesium bromide is a chemical compound from the group of organometallic reagents, more precisely the Grignard compounds .

structure

The semi- structural formula is CH ₃ CH ₂ MgBr, but does not adequately describe the real structure, because ethyl magnesium bromide is usually a complex compound with the participation of the solvent (mostly diethyl ether or tetrahydrofuran ), see Schlenk equilibrium .

Extraction and presentation

Ethyl magnesium bromide can be obtained by reacting bromoethane with magnesium .

${\displaystyle {\ce {EtBr + Mg -> EtMgBr}}}$

properties

As a technical product, ethyl magnesium bromide is an air and moisture-sensitive substance that is offered as a solution in diethyl ether or tetrahydrofuran .

use

Ethyl magnesium bromide is used as the Grignard reagent .

Individual evidence

1. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
2. ↑ Moyer, WW; Marvel, CS: Triethyl Carbinol In: Organic Syntheses . 11, 1931, p. 98, doi : 10.15227 / orgsyn.011.0098 ; Coll. Vol. 2, 1943, p. 602 ( PDF ).
3. ↑ ^{a b} Data sheet Ethylmagnesium bromide, 3M in ether from AlfaAesar, accessed on September 27, 2013 ( PDF )(JavaScript required) .