Agneta Wellmar, A. Hallberg, I. Persson
Sep 10, 1991
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0
Influential Citations
7
Citations
Journal
Journal of Organometallic Chemistry
Abstract
Phenylmagnesium bromide in diethyl ether solution has been studied by large angle X-ray scattering (LAXS) and extended X-ray absorption fine structure, EXAFS, techniques. The reagent is present as both dimeric and monomeric complexes in this solvent, with magnesium octahedrally coordinated in both cases. The MgBr bond distance is 2.56(2) A and the BrBr bond distance in the dimeric complex is 3.62(3) A. The local structure around bromine in methyl- and ethyl-magnesium bromides has also been determined in diethyl ether solution by EXAFS. Data for the Br K edge were collected for solutions in the concentration range 0.1–1.0 M. For all the solutions the MgBr bond distance was found to be the same, 2.54 A, within the limits of error. No other interaction was observed.