H4 N O12 P4 Pr Masse R, Guitel J, Durif A Acta Crystallographica B33 (1977) 630-632 Structure cristalline du tetrametaphosphate de praseodyme-ammonium, PrN H4 P4 O12. Donnees cristallographiques de Pr N H4 P4 O12 _cod_database_code 1007010 _database_code_amcsd 0009583 7.916 12.647 10.672 90 110.34 90 C2/c atom x y z Pr1 0 .12086 .25 P1 .4617 .1690 .5024 P2 .2855 .9790 .5611 O1 .4058 .8756 .5681 O2 .4312 .0722 .5885 O3 .2933 .1986 .3907 O4 .5610 .2523 .5983 O5 .2238 .9727 .6763 O6 .1518 -.0100 .4244 N1 0 .8189 .25