Nb0.787 O5 P W0.213 Leclaire A, Borel M, Raveau B, Mezaoui D Zeitschrift fur Kristallographie 212 (1997) 837-839 Combination of $-alpha-Nb O P O4 type layers with enantiomorphic alpha'-type layers: the "racemic structure" of alpha-alpha'- (Nb0.787 W0.213 O P O4) _cod_database_code 1001834 _database_code_amcsd 0011074 6.3524 6.3524 4.0916 90 90 90 *P4/nmm .25 -.25 0 atom x y z occ Nb1 .25 .25 .28336 .787 W1 .25 .25 .28336 .213 P1 .25 .75 0 O1 .25 .25 .710 O2 .2154 .5569 .2137 .5