Reaktion von Arsen-Sauerstoff-Verbindungen mit überkritischem Ammoniak Kristalldaten von Ammoniummetaarsenit NH 4 AsO 2 / Reaction between Arsenic-Oxygen-Compounds and Ammonia above the Critical Point Crystal Data of Ammoniummetaarsenite NH 4 AsO 2

The reactions between As 2 O 3 , As 2 O 5 , As(OC 2 H 5 ) 3 , and NH 3 above the critical point up to 3700 atm were investigated and described. The reaction products formed under various pressure and temperature conditions are compounds with arsenic-nitrogen bondings and ammonium salts of different arsenic acids. The lattice constants and the space group of NH 4 AsO 2 produced by the reaction of As 2 O 5 and NH 3 under ammonothermal conditions were determined.