K2 Na1.73 Nb8 O34 P5
Benabbas A, Borel M, Grandin A, Chardon J, Leclaire A, Raveau B
Journal of Solid State Chemistry 91 (1991) 323-330
The niobium phosphate bronze beta-K2Na2-xNb8P5O34, second
form of the first member of the series (K3Nb6P4O26)nKNb2PO8
_cod_database_code 1001478
_database_code_amcsd 0013709
10.612 10.612 6.384 90 90 90 P-4m2
atom      x      y      z occ
Nb1      .5 .18295 .20093
Nb2  .17682 .17682      0
P1       .5     .5      0
P2   .24040 .24040     .5
O1       .5      0   .256
O2    .3649  .1753  .0200
O3    .3793  .2155  .4548
O4       .5  .3841   .151
O5    .1776      0  .0340
O6    .1592  .1978  .3114
Na1      .5     .5     .5 .73
K1        0      0     .5
K2        0     .5  .2965  .5
Na2       0     .5  .2965  .5