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The Composition of Grignard Compounds. VI. The Nature of Association in Tetrahydrofuran and Diethyl Ether Solutions' Frank W. Walker2 and E. C. Ashby3 Contribution f r o m the School of Chemistry, Georgia Institute of Technology, Atlanta, Georgia 30332. Received September 15, 1968
Abstract: Ebullioscopic data are presented for tetrahydrofuran and diethyl ether solutions of several Grignard
and related magnesium compounds over a wide concentration range. Analysis of the data is accomplished by observing the change in association ( i ) with concentration and by consideration of the constancy of the equilibrium constants calculated for several possible descriptions of the associated system. The expected nonideality of the solutions studied was considered in the interpretation of the data. While all the compounds studied were found to be monomeric in tetrahydrofuran, the alkyl- and arylmagnesium bromides and iodides were found to be monomeric in diethyl ether only at low concentration (
