Exposing elusive cationic magnesium-chloro aggregates in aluminate complexes through donor control

Etienne V. Brouillet, Alan R. Kennedy, Konrad Koszinowski, Ross McLellan, Robert E. Mulvey, Stuart D. Robertson

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The cationic magnesium moiety of magnesium organohalo aluminate complexes, relevant to rechargeable Mg battery electrolytes, typically takes the thermodynamically favourable dinuclear [Mg2Cl3]+ form in the solid-state. We now report that judicious choice of Lewis donor allows the deliberate synthesis and isolation of the hitherto only postulated mononuclear [MgCl]+ and trinuclear [Mg3Cl5]+ modifications, forming a comparable series with a common aluminate anion [(Dipp)(Me3Si)NAlCl3]. By pre-forming the Al-N bond prior to introduction of the Mg source, a consistently reproducible protocol is reported. Usage of the green solvent 2-methyltetrahydrofuran in place of THF in the context of Mg/Al battery electrolyte type complexes is also promoted.
LanguageEnglish
Pages5590-5597
Number of pages8
JournalDalton Transactions
Volume45
Issue number13
Early online date22 Feb 2016
DOIs
Publication statusPublished - 7 Apr 2016

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Magnesium
Electrolytes
Secondary batteries
Anions
2-methyltetrahydrofuran
aluminum magnesium oxide

Keywords

  • post-lithium ion batteries
  • magnesium
  • inorganic metal salt

Cite this

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Exposing elusive cationic magnesium-chloro aggregates in aluminate complexes through donor control. / Brouillet, Etienne V.; Kennedy, Alan R.; Koszinowski, Konrad ; McLellan, Ross; Mulvey, Robert E.; Robertson, Stuart D.

In: Dalton Transactions, Vol. 45, No. 13, 07.04.2016, p. 5590-5597.

Research output: Contribution to journalArticle

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T1 - Exposing elusive cationic magnesium-chloro aggregates in aluminate complexes through donor control

AU - Brouillet, Etienne V.

AU - Kennedy, Alan R.

AU - Koszinowski, Konrad

AU - McLellan, Ross

AU - Mulvey, Robert E.

AU - Robertson, Stuart D.

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