Dimethylmagnesium
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| Names | |
|---|---|
| IUPAC name
Dimethylmagnesium | |
| Identifiers | |
2999-74-8  | |
| ChemSpider | 10430979 |
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| Jmol-3D images | Image |
| PubChem | 18141 |
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| Properties | |
| Molecular formula |
C2H6Mg |
| Molar mass | 54.37 g·mol−1 |
| Density | 0.96 g/cm3 |
| Reacts | |
| Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa) | |
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| Infobox references | |
Dimethylmagnesium is an organomagnesium compound. Like other dialkylmagnesium compounds, it is prepared by adding at least one equivalent of dioxane to a solution of methylmagnesium halide:[1][2]
- 2 CH3MgX + dioxane
(CH3)2Mg + MgX2(dioxane)
The complex of magnesium dihalide and dioxane precipitates as a solid, driving the Schlenk equilibrium to give the dialkylmagnesium compound, which remains in solution.
The structure of this compound has been determined by X-ray crystallography. The material is a polymer with tetrahedral magnesium centres, each surrounded by bridging methyl groups. The Mg-C distances are 224 pm.[3]
References
- ↑ Cope, A. C. (1935). "The Preparation of Dialkylmagnesium Compounds from Grignard Reagents". J. Am. Chem. Soc. 57 (11): 2238–2240. doi:10.1021/ja01314a059.
- ↑ Anteunis, M. (1962). "Studies of the Grignard Reaction. II. Kinetics of the Reaction of Dimethylmagnesium with Benzophenone and of Methylmagnesium Bromide-Magnesium Bromide with Pinacolone". J. Org. Chem. 27 (2): 596–598. doi:10.1021/jo01049a060.
- ↑ Weiss, E. (1964). "Die Kristallstruktur des Dimethylmagnesiums". J. Organomet. Chem. 2 (4): 314–321. doi:10.1016/S0022-328X(00)82217-2.