# generated using pymatgen
data_Na2Cr3O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.93514100
_cell_length_b   7.83782906
_cell_length_c   8.60264478
_cell_angle_alpha   110.94186643
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2Cr3O9
_chemical_formula_sum   'Na4 Cr6 O18'
_cell_volume   373.74849114
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Na  Na0  1  0.75000000  0.15937800  0.09380300  1.0
  Na  Na1  1  0.25000000  0.84062200  0.90619700  1.0
  Na  Na2  1  0.75000000  0.78119900  0.24696100  1.0
  Na  Na3  1  0.25000000  0.21880100  0.75303900  1.0
  Cr  Cr4  1  0.50000000  0.50000000  0.50000000  1.0
  Cr  Cr5  1  0.00000000  0.50000000  0.50000000  1.0
  Cr  Cr6  1  0.25000000  0.49473500  0.16625600  1.0
  Cr  Cr7  1  0.75000000  0.50526500  0.83374400  1.0
  Cr  Cr8  1  0.25000000  0.06799000  0.32187600  1.0
  Cr  Cr9  1  0.75000000  0.93201000  0.67812400  1.0
  O  O10  1  0.48072900  0.55711200  0.29492300  1.0
  O  O11  1  0.98072900  0.44288800  0.70507700  1.0
  O  O12  1  0.51927100  0.44288800  0.70507700  1.0
  O  O13  1  0.01927100  0.55711200  0.29492300  1.0
  O  O14  1  0.47564800  0.99894400  0.20485900  1.0
  O  O15  1  0.97564800  0.00105600  0.79514100  1.0
  O  O16  1  0.52435200  0.00105600  0.79514100  1.0
  O  O17  1  0.02435200  0.99894400  0.20485900  1.0
  O  O18  1  0.25000000  0.31333900  0.41912200  1.0
  O  O19  1  0.75000000  0.68666100  0.58087800  1.0
  O  O20  1  0.75000000  0.35196800  0.41018200  1.0
  O  O21  1  0.25000000  0.64803200  0.58981800  1.0
  O  O22  1  0.25000000  0.27603200  0.05915300  1.0
  O  O23  1  0.75000000  0.72396800  0.94084700  1.0
  O  O24  1  0.25000000  0.60764400  0.04084600  1.0
  O  O25  1  0.75000000  0.39235600  0.95915400  1.0
  O  O26  1  0.25000000  0.98236700  0.46702800  1.0
  O  O27  1  0.75000000  0.01763300  0.53297200  1.0