Salammoniac Vainshtein B K Trudy Instituta Kristallografii Akademiya Nauk SSSR 12 (1956) 18-24 Refinement of the structure of the group NH4 in the structure of ammonium chloride _database_code_amcsd 0015628 3.86 3.86 3.86 90 90 90 Pm-3m atom x y z occ N 0 0 0 H .146 .146 .146 .5 Cl .5 .5 .5