The compound described by Ba2ErInTe5 crystallizes in the orthorhombic Cmc2_1 space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 7-coordinate geometry to one Te(3), one Te(5), two equivalent Te(1), two equivalent Te(2), and two equivalent Te(4) atoms. In the second Ba site, Ba(2) is bonded in a 8-coordinate geometry to one Te(2), one Te(5), two equivalent Te(1), two equivalent Te(3), and two equivalent Te(4) atoms. Er(1) is bonded to one Te(1), one Te(5), two equivalent Te(2), and two equivalent Te(3) atoms to form ErTe6 octahedra that share edges with two equivalent Er(1)Te6 octahedra and edges with two equivalent In(1)Te4 tetrahedra. In(1) is bonded to one Te(3), one Te(4), and two equivalent Te(5) atoms to form InTe4 tetrahedra that share corners with two equivalent In(1)Te4 tetrahedra and edges with two equivalent Er(1)Te6 octahedra. There are five inequivalent Te sites. In the first Te site, Te(1) is bonded to two equivalent Ba(1), two equivalent Ba(2), and one Er(1) atom to form TeBa4Er square pyramids that share corners with two equivalent Te(3)Ba3Er2In octahedra, corners with four equivalent Te(4)Ba4In square pyramids, corners with two equivalent Te(2)Ba3Er2 trigonal bipyramids, edges with three equivalent Te(3)Ba3Er2In octahedra, edges with two equivalent Te(1)Ba4Er square pyramids, edges with two equivalent Te(4)Ba4In square pyramids, and edges with three equivalent Te(2)Ba3Er2 trigonal bipyramids. The corner-sharing octahedral tilt angles are 31°. In the second Te site, Te(2) is bonded to one Ba(2), two equivalent Ba(1), and two equivalent Er(1) atoms to form distorted TeBa3Er2 trigonal bipyramids that share corners with two equivalent Te(3)Ba3Er2In octahedra, corners with two equivalent Te(1)Ba4Er square pyramids, corners with four equivalent Te(4)Ba4In square pyramids, edges with three equivalent Te(3)Ba3Er2In octahedra,  an edgeedge with one Te(4)Ba4In square pyramid, edges with three equivalent Te(1)Ba4Er square pyramids, and edges with two equivalent Te(2)Ba3Er2 trigonal bipyramids. The corner-sharing octahedral tilt angles are 8°. In the third Te site, Te(3) is bonded to one Ba(1), two equivalent Ba(2), two equivalent Er(1), and one In(1) atom to form TeBa3Er2In octahedra that share corners with two equivalent Te(1)Ba4Er square pyramids, corners with four equivalent Te(4)Ba4In square pyramids, corners with two equivalent Te(2)Ba3Er2 trigonal bipyramids, edges with two equivalent Te(3)Ba3Er2In octahedra, edges with three equivalent Te(1)Ba4Er square pyramids, edges with three equivalent Te(2)Ba3Er2 trigonal bipyramids, and  a faceface with one Te(4)Ba4In square pyramid. In the fourth Te site, Te(4) is bonded to two equivalent Ba(1), two equivalent Ba(2), and one In(1) atom to form TeBa4In square pyramids that share corners with four equivalent Te(3)Ba3Er2In octahedra, corners with four equivalent Te(1)Ba4Er square pyramids, corners with four equivalent Te(2)Ba3Er2 trigonal bipyramids, edges with two equivalent Te(1)Ba4Er square pyramids, edges with two equivalent Te(4)Ba4In square pyramids,  an edgeedge with one Te(2)Ba3Er2 trigonal bipyramid, and  a faceface with one Te(3)Ba3Er2In octahedra. The corner-sharing octahedral tilt angles range from 40-65°. In the fifth Te site, Te(5) is bonded in a 5-coordinate geometry to one Ba(1), one Ba(2), one Er(1), and two equivalent In(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ba2ErInTe5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.481
_cell_length_b   10.481
_cell_length_c   14.361
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   154.806
_symmetry_Int_Tables_number   1
_cell_volume   671.541
_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
  Ba  Ba0  1  0.131  0.869  0.815  1.0
  Ba  Ba1  1  0.869  0.131  0.315  1.0
  Ba  Ba2  1  0.119  0.881  0.182  1.0
  Ba  Ba3  1  0.881  0.119  0.682  1.0
  Er  Er4  1  0.210  0.790  0.519  1.0
  Er  Er5  1  0.790  0.210  0.019  1.0
  In  In6  1  0.444  0.556  0.934  1.0
  In  In7  1  0.556  0.444  0.434  1.0
  Te  Te8  1  0.355  0.645  0.501  1.0
  Te  Te9  1  0.645  0.355  0.001  1.0
  Te  Te10  1  0.292  0.708  0.159  1.0
  Te  Te11  1  0.708  0.292  0.659  1.0
  Te  Te12  1  0.310  0.690  0.868  1.0
  Te  Te13  1  0.690  0.310  0.368  1.0
  Te  Te14  1  0.504  0.496  0.762  1.0
  Te  Te15  1  0.496  0.504  0.262  1.0
  Te  Te16  1  0.051  0.949  0.551  1.0
  Te  Te17  1  0.949  0.051  0.051  1.0
[/CIF]
.
The compound described by Ba2ErInTe5 crystallizes in the orthorhombic Cmc2_1 space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 7-coordinate geometry to one Te(3), one Te(5), two equivalent Te(1), two equivalent Te(2), and two equivalent Te(4) atoms. In the second Ba site, Ba(2) is bonded in a 8-coordinate geometry to one Te(2), one Te(5), two equivalent Te(1), two equivalent Te(3), and two equivalent Te(4) atoms. Er(1) is bonded to one Te(1), one Te(5), two equivalent Te(2), and two equivalent Te(3) atoms to form ErTe6 octahedra that share edges with two equivalent Er(1)Te6 octahedra and edges with two equivalent In(1)Te4 tetrahedra. In(1) is bonded to one Te(3), one Te(4), and two equivalent Te(5) atoms to form InTe4 tetrahedra that share corners with two equivalent In(1)Te4 tetrahedra and edges with two equivalent Er(1)Te6 octahedra. There are five inequivalent Te sites. In the first Te site, Te(1) is bonded to two equivalent Ba(1), two equivalent Ba(2), and one Er(1) atom to form TeBa4Er square pyramids that share corners with two equivalent Te(3)Ba3Er2In octahedra, corners with four equivalent Te(4)Ba4In square pyramids, corners with two equivalent Te(2)Ba3Er2 trigonal bipyramids, edges with three equivalent Te(3)Ba3Er2In octahedra, edges with two equivalent Te(1)Ba4Er square pyramids, edges with two equivalent Te(4)Ba4In square pyramids, and edges with three equivalent Te(2)Ba3Er2 trigonal bipyramids. The corner-sharing octahedral tilt angles are 31°. In the second Te site, Te(2) is bonded to one Ba(2), two equivalent Ba(1), and two equivalent Er(1) atoms to form distorted TeBa3Er2 trigonal bipyramids that share corners with two equivalent Te(3)Ba3Er2In octahedra, corners with two equivalent Te(1)Ba4Er square pyramids, corners with four equivalent Te(4)Ba4In square pyramids, edges with three equivalent Te(3)Ba3Er2In octahedra,  an edgeedge with one Te(4)Ba4In square pyramid, edges with three equivalent Te(1)Ba4Er square pyramids, and edges with two equivalent Te(2)Ba3Er2 trigonal bipyramids. The corner-sharing octahedral tilt angles are 8°. In the third Te site, Te(3) is bonded to one Ba(1), two equivalent Ba(2), two equivalent Er(1), and one In(1) atom to form TeBa3Er2In octahedra that share corners with two equivalent Te(1)Ba4Er square pyramids, corners with four equivalent Te(4)Ba4In square pyramids, corners with two equivalent Te(2)Ba3Er2 trigonal bipyramids, edges with two equivalent Te(3)Ba3Er2In octahedra, edges with three equivalent Te(1)Ba4Er square pyramids, edges with three equivalent Te(2)Ba3Er2 trigonal bipyramids, and  a faceface with one Te(4)Ba4In square pyramid. In the fourth Te site, Te(4) is bonded to two equivalent Ba(1), two equivalent Ba(2), and one In(1) atom to form TeBa4In square pyramids that share corners with four equivalent Te(3)Ba3Er2In octahedra, corners with four equivalent Te(1)Ba4Er square pyramids, corners with four equivalent Te(2)Ba3Er2 trigonal bipyramids, edges with two equivalent Te(1)Ba4Er square pyramids, edges with two equivalent Te(4)Ba4In square pyramids,  an edgeedge with one Te(2)Ba3Er2 trigonal bipyramid, and  a faceface with one Te(3)Ba3Er2In octahedra. The corner-sharing octahedral tilt angles range from 40-65°. In the fifth Te site, Te(5) is bonded in a 5-coordinate geometry to one Ba(1), one Ba(2), one Er(1), and two equivalent In(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ba2ErInTe5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.481
_cell_length_b   10.481
_cell_length_c   14.361
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   154.806
_symmetry_Int_Tables_number   1
_cell_volume   671.541
_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
  Ba  Ba0  1  0.131  0.869  0.815  1.0
  Ba  Ba1  1  0.869  0.131  0.315  1.0
  Ba  Ba2  1  0.119  0.881  0.182  1.0
  Ba  Ba3  1  0.881  0.119  0.682  1.0
  Er  Er4  1  0.210  0.790  0.519  1.0
  Er  Er5  1  0.790  0.210  0.019  1.0
  In  In6  1  0.444  0.556  0.934  1.0
  In  In7  1  0.556  0.444  0.434  1.0
  Te  Te8  1  0.355  0.645  0.501  1.0
  Te  Te9  1  0.645  0.355  0.001  1.0
  Te  Te10  1  0.292  0.708  0.159  1.0
  Te  Te11  1  0.708  0.292  0.659  1.0
  Te  Te12  1  0.310  0.690  0.868  1.0
  Te  Te13  1  0.690  0.310  0.368  1.0
  Te  Te14  1  0.504  0.496  0.762  1.0
  Te  Te15  1  0.496  0.504  0.262  1.0
  Te  Te16  1  0.051  0.949  0.551  1.0
  Te  Te17  1  0.949  0.051  0.051  1.0
[/CIF]
.