data_BeAgTe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.05
_cell_length_b   5.05
_cell_length_c   5.05
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BeAgTe2
_chemical_formula_sum   'Be1 Ag1 Te2'
_cell_volume   90.89
_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
  Be  Be1  1  0.0  0.0  0.0  1.0
  Ag  Ag0  1  0.78  0.78  0.78  1.0
  Te  Te2  1  0.35  0.35  0.35  1.0
  Te  Te3  1  0.57  0.57  0.57  1.0

data_BeAgTe2
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.05
_cell_length_b   5.05
_cell_length_c   12.36
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   BeAgTe2
_chemical_formula_sum   'Be3 Ag3 Te6'
_cell_volume   272.68
_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
  Be  Be0  3  0.0  0.0  0.0  1.0
  Ag  Ag1  3  0.0  0.0  0.22  1.0
  Te  Te2  3  0.0  0.0  0.43  1.0
  Te  Te3  3  0.0  0.0  0.65  1.0

Be Ag Te Te
BeAgTe2 crystallizes in the trigonal R3m space group. Be(1) is bonded to one Ag(1) and three equivalent Te(1) atoms to form corner-sharing BeAgTe3 trigonal pyramids. The Be(1)-Ag(1) bond length is 2.67 Å. All Be(1)-Te(1) bond lengths are 2.92 Å. Ag(1) is bonded in a distorted linear geometry to one Be(1), one Te(2), and three equivalent Te(1) atoms. The Ag(1)-Te(2) bond length is 2.67 Å. All Ag(1)-Te(1) bond lengths are 3.16 Å. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded in a 10-coordinate geometry to three equivalent Be(1), three equivalent Ag(1), and four equivalent Te(2) atoms. There is one shorter (2.67 Å) and three longer (3.26 Å) Te(1)-Te(2) bond lengths. In the second Te site, Te(2) is bonded in a 1-coordinate geometry to one Ag(1) and four equivalent Te(1) atoms.