Archerite
Ono Y, Yamada N, Hikita T
Journal of the Physical Society of Japan 60 (1991) 2673-2677
Structure refinements of the mixed crystal K0.78(NH4)0.22H2PO4
in the temperature range from 20 K to 250K
Note: T = 20 K
Locality: synthetic
_database_code_amcsd 0019080
7.4398 7.4398 7.0454 90 90 90 I-42d
atom     x    y    z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
K        0    0   .5 .78   .005   .005   .011      0      0      0
N-NH4    0    0   .5 .22   .005   .005   .011      0      0      0
H-NH4    0    0   .5 .88   .005   .005   .011      0      0      0
P        0    0    0       .004   .004   .025      0      0      0
O     .153 .086 .127       .004   .004   .020  -.004   .002      0