Bi0.5 O7 P2 Ta0.5
Oyetola S, Verbaere A, Guyomard D, Crosnier M, Piffard Y, Tournoux M
European Journal of Solid State and Inorganic Chemistry 28 (1991) 23-36
New ZrP2O7-like diphosphates of either mixed
(M^III^1/2M'^V^1/2) cations (M=Sb,Bi,Nd,Eu;M'=Sb, Nb,Ta) or M'^V^
cations (M'=Ta,Nb):synthesis and structure
_cod_database_code 1000327
_database_code_amcsd 0012540
8.253 8.253 8.253 90 90 90 Pa3
atom     x     y     z occ
Bi1      0     0     0  .5
Ta1      0     0     0  .5
P1   .3970 .3970 .3970
O1    .231  .431  .448
O2      .5    .5    .5