Deutsch Intern
Prof. Dr. Müller-Buschbaum

Solvent Free, Extreme and Mechanochemical Synthesis Strategies

Solvent Free and Extreme Synthesis Strategies

[Translate to Englisch:] The synthetic methods applied in our workgroup are based on the reaction of elemental or metal containing precursors, like chlorides. These substances are combindes with nitrogen containing, multidental ligands in evacuated Duran glass ampoules. Ligands are chosen acoording to the capability of coordinative interaction with metals as well as acidity, thermal stability and coordination modes.

Synthesis are carried out in a solvent free melt of the ligand, thus eliminating the possibility of solvent co-coordination or straight expulsion of ligands by a stronger coordinating solvent. Various methods of activation of the metals are used: amalgamation, liquid ammonia and micorwaves.

Another extreme method is the solution of metals in liquid ammonia, leading to electricide solutions and in the following to the synthesis of metal amides with organice amines.

The goal of all synthesis is to obtain a product of high crystallinity in high yields in order to solve and refine the structure of the compound with X-ray diffraction on single crystals or powders.