Hydrogen atoms, THF of crystallization, and second component of disorder are omitted for clarity. Reprinted with permission from ref 52. Copyright 2011 Nature Publishing Group. (b) ORTEP plot (25% thermal probability ellipsoids) of (Mg 2 (μ-Cl) 3 •6THF)(Ph 2 AlCl 2 ) (APC); 50% thermal probability ellipsoids; hydrogen atoms omitted for clarity. Reprinted with permission from ref 9.

Water, the medium of choice: Many reactions, such as Claisen rearrangements (see scheme), are dramatically accelerated when performed in aqueous suspension (“on water”) relative to organic solvents or even neat conditions. Low miscibility of organic compounds with water is not detrimental: in fact, it facilitates the isolation of products.

Magnesium metal is an ideal rechargeable battery anode material because of its high volumetric energy density, high negative reduction potential and natural abundance. Coupling Mg with high capacity, low-cost cathode materials such as electrophilic sulphur is only possible with a non-nucleophilic electrolyte. Here we show how the crystallization of the electrochemically active species formed from the reaction between hexamethyldisilazide magnesium chloride and aluminum trichloride enables the synthesis of a non-nucleophilic electrolyte. Furthermore, crystallization was essential in the identification of the electroactive species, [Mg2(μ-Cl)3·6THF]+, and vital to improvements in the voltage stability and coulombic efficiency of the electrolyte. X-ray photoelectron spectroscopy analysis of the sulphur electrode confirmed that the electrochemical conversion between sulphur and magnesium sulfide can be successfully performed using this electrolyte.

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Wasser, das Medium der Wahl: Viele Reaktionen, z. B. Claisen‐Umlagerungen (siehe Schema), verlaufen in wässriger Suspension („an Wasser“) viel rascher als in organischen Lösungsmitteln oder sogar in Substanz. Die geringe Mischbarkeit organischer Verbindungen mit Wasser ist nicht von Nachteil; sie erleichtert vielmehr die Isolierung der Produkte.

The global AIDS epidemic has claimed the lives of more than 20 million people since 1981. Another 10 million are now living with HIV and most of these are likely to develop AIDS over the course of the next decade. In spite of the various treatment protocols available, including the mainstream

Magnesium is an ideal metal anode that has nearly double the volumetric capacity of lithium metal with a very negative reduction potential of -2.37 vs SHE. A significant advantage of magnesium is the apparent lack of dendrite formation during charging, which overcomes major safety and performance challenges encountered with using lithium metal anodes. Here, we highlight major recent advances in nonaqueous Mg electrochemistry, notably the development of electrolytes and cathodes, and discuss some of the challenges that must be overcome to realize a practical magnesium battery.

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