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The only stable chalcogenides under normal conditions are aluminium sulfide (Al 2 S 3), selenide (Al 2 Se 3), and telluride (Al 2 Te 3). All three are prepared by direct reaction of their elements at about 1,000 °C (1,832 °F) and quickly hydrolyse completely in water to yield aluminium hydroxide and the respective hydrogen chalcogenide .
Unlike for 27 Al, hydrogen burning is the primary source of 26 Al, with the nuclide emerging after a nucleus of 25 Mg catches a free proton. However, the trace quantities of 26 Al that do exist are the most common gamma ray emitter in the interstellar gas; [63] if the original 26 Al were still present, gamma ray maps of the Milky Way would be ...
Reaction with Al 2 I 6 yields subvalent halide species; reaction with As 4 tBu 4 yields As-Al bonds. [6] When reacted with transition metal-cyclopentadienyl complexes such as NiCp 2 , it offers a straightforward pathway to compounds containing aluminium-transition metal bonds, which has great potential for important catalytic reactions.
In chemistry laboratories, aluminium oxide is a medium for chromatography, available in basic (pH 9.5), acidic (pH 4.5 when in water) and neutral formulations. Additionally, small pieces of aluminium oxide are often used as boiling chips .
Organoaluminium chemistry is the study of compounds containing bonds between carbon and aluminium. It is one of the major themes within organometallic chemistry . [ 1 ] [ 2 ] Illustrative organoaluminium compounds are the dimer trimethylaluminium , the monomer triisobutylaluminium , and the titanium-aluminium compound called Tebbe's reagent .
Aluminium hydride (also known as alane and alumane) refers to a collection of inorganic compounds with the formula Al H 3.As a gas, alane is a planar molecule. When generated in ether solutions, it exists as an ether adduct.
Sodium bis(2-methoxyethoxy)aluminium hydride (SMEAH; [1] trade names Red-Al, Synhydrid, Vitride) is a hydride reductant with the formula NaAlH 2 (OCH 2 CH 2 OCH 3) 2. The trade name Red-Al refers to its being a reducing aluminium compound. It is used predominantly as a reducing agent in organic synthesis.
The composition of alnico alloys is typically 8–12% Al, 15–26% Ni, 5–24% Co, up to 6% Cu, up to 1% Ti, and the rest is Fe. The development of alnico began in 1931, when T. Mishima in Japan discovered that an alloy of iron, nickel, and aluminum had a coercivity of 400 oersteds (32 kA/m), double that of the best magnet steels of the time.