The material structure described by Cs2Tb6N2Te7 crystallizes in the monoclinic Cm space group. There are two inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 8-coordinate geometry to one Te(3), one Te(7), two equivalent Te(1), two equivalent Te(5), and two equivalent Te(6) atoms. In the second Cs site, Cs(2) is bonded in a 8-coordinate geometry to one Te(3), one Te(4), two equivalent Te(2), two equivalent Te(5), and two equivalent Te(6) atoms. There are six inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a distorted single-bond geometry to one N(1), one Te(7), two equivalent Te(4), and two equivalent Te(5) atoms. In the second Tb site, Tb(2) is bonded in a distorted single-bond geometry to one N(2), one Te(4), two equivalent Te(6), and two equivalent Te(7) atoms. In the third Tb site, Tb(3) is bonded in a distorted bent 120 degrees geometry to two equivalent N(1), one Te(1), one Te(5), and two equivalent Te(3) atoms. In the fourth Tb site, Tb(4) is bonded in a distorted bent 120 degrees geometry to two equivalent N(2), one Te(2), one Te(6), and two equivalent Te(3) atoms. In the fifth Tb site, Tb(5) is bonded in a distorted single-bond geometry to one N(2), one Te(1), two equivalent Te(2), and two equivalent Te(7) atoms. In the sixth Tb site, Tb(6) is bonded in a distorted single-bond geometry to one N(1), one Te(2), two equivalent Te(1), and two equivalent Te(4) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded to one Tb(1), one Tb(6), and two equivalent Tb(3) atoms to form NTb4 tetrahedra that share  a cornercorner with one Te(2)Cs2Tb4 octahedra, corners with two equivalent Te(3)Cs2Tb4 octahedra, corners with two equivalent N(1)Tb4 tetrahedra,  an edgeedge with one Te(3)Cs2Tb4 octahedra, and edges with two equivalent Te(1)Cs2Tb4 octahedra. The corner-sharing octahedral tilt angles range from 4-20°. In the second N site, N(2) is bonded to one Tb(2), one Tb(5), and two equivalent Tb(4) atoms to form NTb4 tetrahedra that share  a cornercorner with one Te(1)Cs2Tb4 octahedra, corners with two equivalent Te(3)Cs2Tb4 octahedra, corners with two equivalent N(2)Tb4 tetrahedra,  an edgeedge with one Te(3)Cs2Tb4 octahedra, and edges with two equivalent Te(2)Cs2Tb4 octahedra. The corner-sharing octahedral tilt angles range from 5-20°. There are seven inequivalent Te sites. In the first Te site, Te(1) is bonded to two equivalent Cs(1), one Tb(3), one Tb(5), and two equivalent Tb(6) atoms to form distorted TeCs2Tb4 octahedra that share  a cornercorner with one N(2)Tb4 tetrahedra, edges with two equivalent Te(1)Cs2Tb4 octahedra, edges with two equivalent Te(2)Cs2Tb4 octahedra, edges with two equivalent Te(3)Cs2Tb4 octahedra, and edges with two equivalent N(1)Tb4 tetrahedra. In the second Te site, Te(2) is bonded to two equivalent Cs(2), one Tb(4), one Tb(6), and two equivalent Tb(5) atoms to form distorted TeCs2Tb4 octahedra that share  a cornercorner with one N(1)Tb4 tetrahedra, edges with two equivalent Te(1)Cs2Tb4 octahedra, edges with two equivalent Te(2)Cs2Tb4 octahedra, edges with two equivalent Te(3)Cs2Tb4 octahedra, and edges with two equivalent N(2)Tb4 tetrahedra. In the third Te site, Te(3) is bonded to one Cs(1), one Cs(2), two equivalent Tb(3), and two equivalent Tb(4) atoms to form TeCs2Tb4 octahedra that share corners with two equivalent N(1)Tb4 tetrahedra, corners with two equivalent N(2)Tb4 tetrahedra, edges with two equivalent Te(1)Cs2Tb4 octahedra, edges with two equivalent Te(2)Cs2Tb4 octahedra, edges with two equivalent Te(3)Cs2Tb4 octahedra,  an edgeedge with one N(1)Tb4 tetrahedra, and  an edgeedge with one N(2)Tb4 tetrahedra. In the fourth Te site, Te(4) is bonded in a 6-coordinate geometry to one Cs(2), one Tb(2), two equivalent Tb(1), and two equivalent Tb(6) atoms. In the fifth Te site, Te(5) is bonded in a 7-coordinate geometry to two equivalent Cs(1), two equivalent Cs(2), one Tb(3), and two equivalent Tb(1) atoms. In the sixth Te site, Te(6) is bonded in a 7-coordinate geometry to two equivalent Cs(1), two equivalent Cs(2), one Tb(4), and two equivalent Tb(2) atoms. In the seventh Te site, Te(7) is bonded in a 6-coordinate geometry to one Cs(1), one Tb(1), two equivalent Tb(2), and two equivalent Tb(5) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cs2Tb6Te7N2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.326
_cell_length_b   12.326
_cell_length_c   11.536
_cell_angle_alpha   76.500
_cell_angle_beta   76.500
_cell_angle_gamma   19.728
_symmetry_Int_Tables_number   1
_cell_volume   574.786
_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
  Cs  Cs0  1  0.068  0.068  0.300  1.0
  Cs  Cs1  1  0.936  0.936  0.696  1.0
  Tb  Tb2  1  0.165  0.165  0.611  1.0
  Tb  Tb3  1  0.836  0.836  0.389  1.0
  Tb  Tb4  1  0.592  0.592  0.864  1.0
  Tb  Tb5  1  0.409  0.409  0.138  1.0
  Tb  Tb6  1  0.786  0.786  0.130  1.0
  Tb  Tb7  1  0.216  0.216  0.868  1.0
  Te  Te8  1  0.665  0.665  0.057  1.0
  Te  Te9  1  0.336  0.336  0.942  1.0
  Te  Te10  1  0.001  0.001  0.003  1.0
  Te  Te11  1  0.761  0.761  0.661  1.0
  Te  Te12  1  0.576  0.576  0.597  1.0
  Te  Te13  1  0.425  0.425  0.404  1.0
  Te  Te14  1  0.242  0.242  0.339  1.0
  N  N15  1  0.138  0.138  0.805  1.0
  N  N16  1  0.863  0.863  0.195  1.0
[/CIF]
.
The material structure described by Cs2Tb6N2Te7 crystallizes in the monoclinic Cm space group. There are two inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 8-coordinate geometry to one Te(3), one Te(7), two equivalent Te(1), two equivalent Te(5), and two equivalent Te(6) atoms. In the second Cs site, Cs(2) is bonded in a 8-coordinate geometry to one Te(3), one Te(4), two equivalent Te(2), two equivalent Te(5), and two equivalent Te(6) atoms. There are six inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a distorted single-bond geometry to one N(1), one Te(7), two equivalent Te(4), and two equivalent Te(5) atoms. In the second Tb site, Tb(2) is bonded in a distorted single-bond geometry to one N(2), one Te(4), two equivalent Te(6), and two equivalent Te(7) atoms. In the third Tb site, Tb(3) is bonded in a distorted bent 120 degrees geometry to two equivalent N(1), one Te(1), one Te(5), and two equivalent Te(3) atoms. In the fourth Tb site, Tb(4) is bonded in a distorted bent 120 degrees geometry to two equivalent N(2), one Te(2), one Te(6), and two equivalent Te(3) atoms. In the fifth Tb site, Tb(5) is bonded in a distorted single-bond geometry to one N(2), one Te(1), two equivalent Te(2), and two equivalent Te(7) atoms. In the sixth Tb site, Tb(6) is bonded in a distorted single-bond geometry to one N(1), one Te(2), two equivalent Te(1), and two equivalent Te(4) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded to one Tb(1), one Tb(6), and two equivalent Tb(3) atoms to form NTb4 tetrahedra that share  a cornercorner with one Te(2)Cs2Tb4 octahedra, corners with two equivalent Te(3)Cs2Tb4 octahedra, corners with two equivalent N(1)Tb4 tetrahedra,  an edgeedge with one Te(3)Cs2Tb4 octahedra, and edges with two equivalent Te(1)Cs2Tb4 octahedra. The corner-sharing octahedral tilt angles range from 4-20°. In the second N site, N(2) is bonded to one Tb(2), one Tb(5), and two equivalent Tb(4) atoms to form NTb4 tetrahedra that share  a cornercorner with one Te(1)Cs2Tb4 octahedra, corners with two equivalent Te(3)Cs2Tb4 octahedra, corners with two equivalent N(2)Tb4 tetrahedra,  an edgeedge with one Te(3)Cs2Tb4 octahedra, and edges with two equivalent Te(2)Cs2Tb4 octahedra. The corner-sharing octahedral tilt angles range from 5-20°. There are seven inequivalent Te sites. In the first Te site, Te(1) is bonded to two equivalent Cs(1), one Tb(3), one Tb(5), and two equivalent Tb(6) atoms to form distorted TeCs2Tb4 octahedra that share  a cornercorner with one N(2)Tb4 tetrahedra, edges with two equivalent Te(1)Cs2Tb4 octahedra, edges with two equivalent Te(2)Cs2Tb4 octahedra, edges with two equivalent Te(3)Cs2Tb4 octahedra, and edges with two equivalent N(1)Tb4 tetrahedra. In the second Te site, Te(2) is bonded to two equivalent Cs(2), one Tb(4), one Tb(6), and two equivalent Tb(5) atoms to form distorted TeCs2Tb4 octahedra that share  a cornercorner with one N(1)Tb4 tetrahedra, edges with two equivalent Te(1)Cs2Tb4 octahedra, edges with two equivalent Te(2)Cs2Tb4 octahedra, edges with two equivalent Te(3)Cs2Tb4 octahedra, and edges with two equivalent N(2)Tb4 tetrahedra. In the third Te site, Te(3) is bonded to one Cs(1), one Cs(2), two equivalent Tb(3), and two equivalent Tb(4) atoms to form TeCs2Tb4 octahedra that share corners with two equivalent N(1)Tb4 tetrahedra, corners with two equivalent N(2)Tb4 tetrahedra, edges with two equivalent Te(1)Cs2Tb4 octahedra, edges with two equivalent Te(2)Cs2Tb4 octahedra, edges with two equivalent Te(3)Cs2Tb4 octahedra,  an edgeedge with one N(1)Tb4 tetrahedra, and  an edgeedge with one N(2)Tb4 tetrahedra. In the fourth Te site, Te(4) is bonded in a 6-coordinate geometry to one Cs(2), one Tb(2), two equivalent Tb(1), and two equivalent Tb(6) atoms. In the fifth Te site, Te(5) is bonded in a 7-coordinate geometry to two equivalent Cs(1), two equivalent Cs(2), one Tb(3), and two equivalent Tb(1) atoms. In the sixth Te site, Te(6) is bonded in a 7-coordinate geometry to two equivalent Cs(1), two equivalent Cs(2), one Tb(4), and two equivalent Tb(2) atoms. In the seventh Te site, Te(7) is bonded in a 6-coordinate geometry to one Cs(1), one Tb(1), two equivalent Tb(2), and two equivalent Tb(5) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cs2Tb6Te7N2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.326
_cell_length_b   12.326
_cell_length_c   11.536
_cell_angle_alpha   76.500
_cell_angle_beta   76.500
_cell_angle_gamma   19.728
_symmetry_Int_Tables_number   1
_cell_volume   574.786
_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
  Cs  Cs0  1  0.068  0.068  0.300  1.0
  Cs  Cs1  1  0.936  0.936  0.696  1.0
  Tb  Tb2  1  0.165  0.165  0.611  1.0
  Tb  Tb3  1  0.836  0.836  0.389  1.0
  Tb  Tb4  1  0.592  0.592  0.864  1.0
  Tb  Tb5  1  0.409  0.409  0.138  1.0
  Tb  Tb6  1  0.786  0.786  0.130  1.0
  Tb  Tb7  1  0.216  0.216  0.868  1.0
  Te  Te8  1  0.665  0.665  0.057  1.0
  Te  Te9  1  0.336  0.336  0.942  1.0
  Te  Te10  1  0.001  0.001  0.003  1.0
  Te  Te11  1  0.761  0.761  0.661  1.0
  Te  Te12  1  0.576  0.576  0.597  1.0
  Te  Te13  1  0.425  0.425  0.404  1.0
  Te  Te14  1  0.242  0.242  0.339  1.0
  N  N15  1  0.138  0.138  0.805  1.0
  N  N16  1  0.863  0.863  0.195  1.0
[/CIF]
.