(Cs2AgBiBr6)4  (Fm-3m) ~ Cs2AgBiBr6_mp-1078250_symmetrized.cif  (VASP)
    1.0
            0.00000000 5.58318819 5.58318819 
            5.58318819 0.00000000 5.58318819 
            5.58318819 5.58318819 0.00000000 
  2 1 1 6
Direct
        0.25000000 0.25000000 0.25000000
        0.75000000 0.75000000 0.75000000
        0.50000000 0.50000000 0.50000000
        0.00000000 0.00000000 0.00000000
        -0.25418019 0.25418019 0.25418019
        -0.74581981 0.74581981 0.74581981
        0.25418019 0.25418019 -0.25418019
        0.74581981 0.74581981 -0.74581981
        0.25418019 -0.25418019 0.25418019
        0.74581981 -0.74581981 0.74581981