data_Na2CrTe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.19
_cell_length_b   5.19
_cell_length_c   5.19
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2CrTe
_chemical_formula_sum   'Na2 Cr1 Te1'
_cell_volume   98.94
_cell_formula_units_Z   1
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  Na1  1  0.0  0.0  0.0  1.0
  Na  Na2  1  0.84  0.84  0.84  1.0
  Cr  Cr0  1  0.67  0.67  0.67  1.0
  Te  Te3  1  0.51  0.51  0.51  1.0

data_Na2CrTe
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.19
_cell_length_b   5.19
_cell_length_c   12.72
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   Na2CrTe
_chemical_formula_sum   'Na6 Cr3 Te3'
_cell_volume   296.82
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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  3  0.0  0.0  0.0  1.0
  Na  Na1  3  0.0  0.0  0.16  1.0
  Cr  Cr2  3  0.0  0.0  0.33  1.0
  Te  Te3  3  0.0  0.0  0.49  1.0

Na Na Cr Te
Na2CrTe crystallizes in the trigonal R3m space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to one Na(2) and three equivalent Cr(1) atoms to form distorted NaNaCr3 trigonal pyramids that share  a cornercorner with one Cr(1)Na4Te trigonal bipyramid, corners with six equivalent Na(1)NaCr3 trigonal pyramids, and edges with three equivalent Te(1)Na3Cr trigonal pyramids. The Na(1)-Na(2) bond length is 2.09 Å. All Na(1)-Cr(1) bond lengths are 3.00 Å. In the second Na site, Na(2) is bonded in a distorted single-bond geometry to one Na(1), one Cr(1), and three equivalent Te(1) atoms. The Na(2)-Cr(1) bond length is 2.09 Å. All Na(2)-Te(1) bond lengths are 3.00 Å. Cr(1) is bonded to one Na(2), three equivalent Na(1), and one Te(1) atom to form distorted CrNa4Te trigonal bipyramids that share corners with six equivalent Cr(1)Na4Te trigonal bipyramids,  a cornercorner with one Na(1)NaCr3 trigonal pyramid, and corners with three equivalent Te(1)Na3Cr trigonal pyramids. The Cr(1)-Te(1) bond length is 2.09 Å. Te(1) is bonded to three equivalent Na(2) and one Cr(1) atom to form distorted TeNa3Cr trigonal pyramids that share corners with three equivalent Cr(1)Na4Te trigonal bipyramids, corners with six equivalent Te(1)Na3Cr trigonal pyramids, and edges with three equivalent Na(1)NaCr3 trigonal pyramids.