Al5Br7⋅5 THF—The First Saltlike Aluminum Subhalide

Abstract

Multiple insertion of AlBr in bonds of AlBr3 leads to Al5Br7⋅5 THF—a new type of low‐valent aluminum halide. The actual, ionic structure of the subhalide [Al5Br6⋅6 THF]+[Al5Br8⋅4 THF]− (the anion is shown schematically) appears plausible on the basis of density functional theory calculations. This and similar subhalides can play the role of potential intermediates in the electrolytic deposition of metals.

Lewis Base Adducts of Heavier Group 13 Halohydrides – Not Just Aspiring Trihydrides!

“…1000 °C and treated with gaseous hydrogen halide under reduced pressure (≈ 10 –2 mbar),19,86 Schnöckel and co‐workers have isolated many group 13 metal halide clusters for which the bonding cannot be satisfactorily explained using simple bonding theories. Examples include [Al 22 X 20 (thf) 12 ] (X = Cl or Br),105 [Al 5 Br 6 (thf) 6 ][Al 5 Br 8 (thf) 4 ]106 and [Ga 24 Br 22 (thf) 10 ] (Figure 4),107 all of which isolated by gradual warming of condensed M I X (–196 °C) in the presence of thf. Despite the success of this method, the specialist equipment employed precludes general usage.…”

Use of compatible blends to fabricate carbon black composite vapor detectors

“… The model reaction for the formation of 2′ starting from 1′ (L=OMe 2 ) is exothermic by 216 kJ mol −1 . The resulting molecule, Al 5 Cl 6 R ⋅ 5 L, should be similar to the known crystalline Al 5 Br 7 compound 42…”

Kondensierte Al6-Ringe in den Subiodiden La3Al2I2 und La2Al2I

“…Aus diesen Lo È sungen wurden erstmals Al I -bzw. Durch geeignete Wahl des Donors wurden polyedrische Subhalogenide [5] und durch Halogenidsubstitution die Cluster Al 5 [6], Al 7 [7], Al 12 [8] bis zu Al 14 [9] und Al 77 [10] Kristalle wurden in mit Natrium getrocknetem Paraffino È l ausgelesen und unter Argon in du È nnwandige Glaskapillaren eingeschmolzen. Durch geeignete Wahl des Donors wurden polyedrische Subhalogenide [5] und durch Halogenidsubstitution die Cluster Al 5 [6], Al 7 [7], Al 12 [8] bis zu Al 14 [9] und Al 77 [10] Kristalle wurden in mit Natrium getrocknetem Paraffino È l ausgelesen und unter Argon in du È nnwandige Glaskapillaren eingeschmolzen.…”