Abstract: X-ray amorphous and nanocrystalline elemental metal powders of groups IB to VIIIB of the Periodic Table are prepared by reacting halides of these metals with alkali metal hydrides or alkaline earth metal hydrides in an organic solvent with continual milling.

Abstract: The invention relates to a method for the preparation of toluene solutions of aluminum hydride, which is free of ethers and halides, characterized in that the complex, bound magnesium halide portion is precipitated and removed from halogen magnesium aluminum hydridohalides, which optionally are present in tetrahydrofuran (THF) solutions, of the general formula(Mg.sub.2 X.sub.3 (THF).sub.y).sup.+ (AlH.sub.3 X).sup.-whereinX is chlorine, bromine or iodineY is a number from 0 to 6,by the consecutive addition of hexane and toluene with successive removal by distillation of hexane and optionally of THF at boiling temperatures up to 90.degree. C. Solutions of aluminum hydride in toluene are obtained, which can be used directly for reductions or yield solid aluminum hydride after removal of the solvent.

Abstract: A method for the production of electrically conductive tin-IV-oxide of fine particle size is disclosed. Pursuant to the method, tin oxide and/or tin oxide hydrate is precipitated on a dihydroxy-tin-dichloride solution containing fluoride ions as doping agents. The precipitation is accomplished by adding alkali metal hydroxide, ammonium hydroxide, alkali metal carbonate or ammonium carbonate and the tin oxide and/or tin oxide hydrate is separated from the aqueous medium. The separated product is then calcined. The invention also discloses the use of the fluoride-doped tin-IV-oxide by adding it to the various vehicles.