K3.73 Nb8.41 O34 P4.47 W0.12 Leclaire A, Borel M, Mezaoui D, Rebbah H, Raveau B Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences 323 (1996) 679-685 Introduction of tungsten in the niobium phosphate bronzes: the monophosphate K3.75 Nb8-x Wx O14 (P O4)4 (P0.5 Nb0.5 O4) _cod_database_code 1001732 _database_code_amcsd 0012319 10.6265 10.6265 6.4092 90 90 90 P-4m2 atom x y z occ Nb1 .5 .18169 .20261 Nb2 .17708 .17708 0 .969 W1 .17708 .17708 0 .031 P1 .5 .5 0 .47 Nb3 .5 .5 0 .53 P2 .24044 .24044 .5 K1 .5 .5 .5 .73 K2 0 0 .5 K3 0 .5 .29356 O1 .5 0 .2612 O2 .36539 .17337 .02064 O3 .37842 .21525 .45643 O4 .5 .37989 .1491 O5 .17780 0 .033 O6 .16020 .19799 .31306