(NH4)2BeF4 Hultgren R Zeitschrift fur Kristallographie 88 (1934) 233-237 The crystal structure of ammonium beryllium fluoride, (NH4)2BeF4 _database_code_amcsd 0010535 5.8 10.2 7.5 90 90 90 Pmcn atom x y z N1 .25 .393 .675 N2 .25 -.325 -.046 Be .25 .417 .263 F1 .25 .390 .051 F2 .25 .573 .300 F3 .024 .353 .350