Reactions of Inorganic Substances with Solutions of Metals in Liquid Ammonia.

Low-Temperature Synthesis and Magnetostructural Transition in Antiferromagnetic, Refractory Nanoparticles: Chromium Nitride, CrN

“…In principle, solution synthesis allows for better control over the shape and size of the particles and may reduce the risk of carbon or oxygen incorporation, depending on the solvent and reactants used. Synthesis in liquid ammonia was shown to provide a pathway to oxygen- and carbon-free transition metal nitrides. − While alkaline and alkaline earth metals in liquid ammonia have been used for the reduction of metal salts for many years, − chromium salts in liquid ammonia have not been studied extensively yet. To our knowledge, the reaction of chromium salts with an alkaline metal solution to obtain chromium nitride is described here for the first time, although Schmitz-Dumont et al studied the reaction of hexammine chromium­(III) nitrate with potassium amide to produce chromium­(III) amide as early as 1941.…”

Synthesis of Fine Iron–Cobalt Alloy Particles by the Co-Reduction of Precursors with Solvated Electrons in Sodium–Ammonia Solution

“…6) With regard to its application to inorganic syntheses, only a few works have been reported, as far as the authors are aware. Zhu and Sadoway reported the preparation of some elemental (Ta, Cu) and an alloy (Nb 3 Al) nanoparticles synthesized by sodiumammonia solution.…”

Homoallyl-cyclopropylcarbinyl carbonium ion formation and rearrangement under strongly basic conditions

“…Elimination of the first molecule of HBr from dibromo ketal 2 produces the homoallylic bromo ketal 15, which under the very polar reaction conditions can ionize to the homoallylic carbonium ion 16 and its cyclopropylcarbinyl counterpart 17. Rearrangement of ions 16 and 17 utilizing the ethylene glyoxy unit would give carbocations 18 and 19 (stabilized by the adjacent oxygen atoms), which are trapped by methoxide-methanol to give orthoesters 5 and 6.6…”