Über einen nichtflüchtigen, polymeren Aluminiumwasserstoff (AlH ₃ ) _x und einige flüchtige Verbindungen des monomeren AlH ₃

Abstract

Nr. 12/1942] S t e c h e r , W i b e r g . 2003 genomnien und der Rest der Sterine iiiit 1-proz. 'Qigitonin-Losung gefallt. Es konnten aber niir noch 0.3 g Sitosterin isoliert werden. 4.2G g des 01s wurden in 150 ccni Petrolather gelost und der chromatographischen Adsorption an Aluniiniumosyd unterworfen. Beini Entwickeln des Chroinatograinnis konnten sechs Zonen beobachtet werden. Nach der Elution iiiit Methanol wurden folgende Stoffe isoliert.-__

Hydroalumination of diazo and azido compounds: An Al-H addition to end-on nitrogen of substrates

“…The latter species was synthesized from a reaction of LiAlH 4 and Me 3 N·HCl [27]. Alternatively, we tried a direct approach by the reaction of LH with a little excess LiAlH 4 , which proceeded smoothly in toluene at 80 °C for 12 h, and isolated LAlH 2 as crystalline solids in almost quantitative yield.…”

Aluminum hydride as a hydrogen and energy storage material: Past, present and future

“…One of the earliest published reports on the synthesis of AlH 3 appeared in 1942 when Stecher and Wiberg prepared AlH 3 in an impure and low yield form, as an alane amine complex AlH 3 ·2N(CH 3 ) 3 [1]. A few years later in 1947 Finholt et al prepared an ethereal solution of aluminum hydride from a much simpler reaction between LiH (or LiAlH 4 ) and AlCl 3 in diethyl ether (Et 2 O) [2].…”

Stable Systems with a Triple Bond to Silicon or Its Homologues: Another Challenge

“…They achieve the noble gas configuration by polymerization generating larger structures. [2] In that context E. Wiberg refered to the ªnot well-known double-bond ruleº, which strictly speaking still holds for basic systems. [3] However, the introduction of substituents that were capable of kinetic and/or thermodynamic stabilization led already in the 1970s to many exceptions to this rule.…”