Alkyl group transmetalation reactions in electrolytic solutions studied by multinuclear NMR

Haim Gizbar; Yulia Vestfrid; Orit Chusid; Yossef Gofer; Hugo E. Gottlieb; Vered Marks; Doron Aurbach

doi:10.1021/om049949a

Alkyl group transmetalation reactions in electrolytic solutions studied by multinuclear NMR

Haim Gizbar, Yulia Vestfrid, Orit Chusid, Yossef Gofer, Hugo E. Gottlieb, Vered Marks, Doron Aurbach

Department of Chemistry

Bar-Ilan University

Research output: Contribution to journal › Article › peer-review

77 Scopus citations

Abstract

Advantageous electrolytic solutions for rechargeable magnesium batteries are obtained by dissolving in THF the reaction products of EtAlCl₂ and Bu₂Mg, in various stoichiometric proportions. The components of these solutions are identified by multinuclear NMR (¹H, ¹³C, ²⁷A1, and ²⁵Mg) and conductivity measurements for the closely related system where the organomagnesium species is Et₂Mg. The system with the highest electrochemical stability and relatively high ionic conductivity, denoted as a "2:1 complex", is obtained from a 2:1 ratio of EtAlCl₂ and Et₂Mg and is shown to be composed of a chloride-bridged species, Et₂-ClAl-Cl- AlClEt₂^-, and of MgCl⁺, the result of transmetalation reactions.

Original language	English
Pages (from-to)	3826-3831
Number of pages	6
Journal	Organometallics
Volume	23
Issue number	16
DOIs	https://doi.org/10.1021/om049949a
State	Published - 2 Aug 2004

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title = "Alkyl group transmetalation reactions in electrolytic solutions studied by multinuclear NMR",

abstract = "Advantageous electrolytic solutions for rechargeable magnesium batteries are obtained by dissolving in THF the reaction products of EtAlCl2 and Bu2Mg, in various stoichiometric proportions. The components of these solutions are identified by multinuclear NMR (1H, 13C, 27A1, and 25Mg) and conductivity measurements for the closely related system where the organomagnesium species is Et2Mg. The system with the highest electrochemical stability and relatively high ionic conductivity, denoted as a {"}2:1 complex{"}, is obtained from a 2:1 ratio of EtAlCl2 and Et2Mg and is shown to be composed of a chloride-bridged species, Et2-ClAl-Cl- AlClEt2-, and of MgCl+, the result of transmetalation reactions.",

author = "Haim Gizbar and Yulia Vestfrid and Orit Chusid and Yossef Gofer and Gottlieb, {Hugo E.} and Vered Marks and Doron Aurbach",

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doi = "10.1021/om049949a",

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T1 - Alkyl group transmetalation reactions in electrolytic solutions studied by multinuclear NMR

AU - Gizbar, Haim

AU - Vestfrid, Yulia

AU - Chusid, Orit

AU - Gofer, Yossef

AU - Gottlieb, Hugo E.

AU - Marks, Vered

AU - Aurbach, Doron

PY - 2004/8/2

Y1 - 2004/8/2

N2 - Advantageous electrolytic solutions for rechargeable magnesium batteries are obtained by dissolving in THF the reaction products of EtAlCl2 and Bu2Mg, in various stoichiometric proportions. The components of these solutions are identified by multinuclear NMR (1H, 13C, 27A1, and 25Mg) and conductivity measurements for the closely related system where the organomagnesium species is Et2Mg. The system with the highest electrochemical stability and relatively high ionic conductivity, denoted as a "2:1 complex", is obtained from a 2:1 ratio of EtAlCl2 and Et2Mg and is shown to be composed of a chloride-bridged species, Et2-ClAl-Cl- AlClEt2-, and of MgCl+, the result of transmetalation reactions.

AB - Advantageous electrolytic solutions for rechargeable magnesium batteries are obtained by dissolving in THF the reaction products of EtAlCl2 and Bu2Mg, in various stoichiometric proportions. The components of these solutions are identified by multinuclear NMR (1H, 13C, 27A1, and 25Mg) and conductivity measurements for the closely related system where the organomagnesium species is Et2Mg. The system with the highest electrochemical stability and relatively high ionic conductivity, denoted as a "2:1 complex", is obtained from a 2:1 ratio of EtAlCl2 and Et2Mg and is shown to be composed of a chloride-bridged species, Et2-ClAl-Cl- AlClEt2-, and of MgCl+, the result of transmetalation reactions.

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Alkyl group transmetalation reactions in electrolytic solutions studied by multinuclear NMR

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