The compound described by Ge5(AsTe4)2 crystallizes in the monoclinic C2/m space group. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to two equivalent Te(1), two equivalent Te(2), and two equivalent Te(5) atoms to form GeTe6 octahedra that share corners with two equivalent Ge(1)Te6 octahedra, corners with two equivalent Ge(3)Te6 octahedra, edges with two equivalent As(1)Te6 octahedra, edges with four equivalent Ge(3)Te6 octahedra, and edges with six equivalent Ge(2)Te6 octahedra. The corner-sharing octahedra are not tilted. In the second Ge site, Ge(2) is bonded to one Te(2), one Te(4), one Te(5), and three equivalent Te(1) atoms to form GeTe6 octahedra that share corners with three equivalent Ge(2)Te6 octahedra, corners with three equivalent As(1)Te6 octahedra, edges with two equivalent Ge(2)Te6 octahedra, edges with two equivalent As(1)Te6 octahedra, edges with three equivalent Ge(1)Te6 octahedra, and edges with four equivalent Ge(3)Te6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the third Ge site, Ge(3) is bonded to one Te(1), one Te(3), one Te(4), one Te(5), and two equivalent Te(2) atoms to form GeTe6 octahedra that share  a cornercorner with one Ge(1)Te6 octahedra, corners with four equivalent Ge(3)Te6 octahedra, edges with two equivalent Ge(1)Te6 octahedra, edges with four equivalent Ge(2)Te6 octahedra, and edges with four equivalent As(1)Te6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. As(1) is bonded to one Te(1), one Te(2), one Te(3), and three equivalent Te(4) atoms to form AsTe6 octahedra that share corners with three equivalent Ge(2)Te6 octahedra, corners with three equivalent As(1)Te6 octahedra,  an edgeedge with one Ge(1)Te6 octahedra, edges with two equivalent Ge(2)Te6 octahedra, edges with two equivalent As(1)Te6 octahedra, and edges with four equivalent Ge(3)Te6 octahedra. The corner-sharing octahedra are not tilted. There are five inequivalent Te sites. In the first Te site, Te(1) is bonded to one Ge(1), one Ge(3), three equivalent Ge(2), and one As(1) atom to form TeGe5As octahedra that share corners with three equivalent Te(1)Ge5As octahedra, corners with three equivalent Te(4)Ge2As3 square pyramids, edges with two equivalent Te(1)Ge5As octahedra, edges with three equivalent Te(5)Ge6 octahedra, edges with two equivalent Te(4)Ge2As3 square pyramids, and edges with four equivalent Te(2)Ge4As square pyramids. The corner-sharing octahedral tilt angles range from 0-1°. In the second Te site, Te(2) is bonded to one Ge(1), one Ge(2), two equivalent Ge(3), and one As(1) atom to form TeGe4As square pyramids that share  a cornercorner with one Te(5)Ge6 octahedra, corners with two equivalent Te(4)Ge2As3 square pyramids, corners with three equivalent Te(2)Ge4As square pyramids, edges with two equivalent Te(5)Ge6 octahedra, edges with four equivalent Te(1)Ge5As octahedra, and edges with two equivalent Te(4)Ge2As3 square pyramids. The corner-sharing octahedra are not tilted. In the third Te site, Te(3) is bonded in a square co-planar geometry to two equivalent Ge(3) and two equivalent As(1) atoms. In the fourth Te site, Te(4) is bonded to one Ge(2), one Ge(3), and three equivalent As(1) atoms to form TeGe2As3 square pyramids that share corners with three equivalent Te(1)Ge5As octahedra, corners with two equivalent Te(4)Ge2As3 square pyramids, corners with two equivalent Te(2)Ge4As square pyramids,  an edgeedge with one Te(5)Ge6 octahedra, edges with two equivalent Te(1)Ge5As octahedra, edges with two equivalent Te(4)Ge2As3 square pyramids, and edges with two equivalent Te(2)Ge4As square pyramids. The corner-sharing octahedra are not tilted. In the fifth Te site, Te(5) is bonded to two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms to form TeGe6 octahedra that share corners with two equivalent Te(5)Ge6 octahedra, corners with two equivalent Te(2)Ge4As square pyramids, edges with six equivalent Te(1)Ge5As octahedra, edges with two equivalent Te(4)Ge2As3 square pyramids, and edges with four equivalent Te(2)Ge4As square pyramids. The corner-sharing octahedra are not tilted. is represented by the CIF card [CIF]
data_Ge5(Te4As)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.237
_cell_length_b   7.237
_cell_length_c   11.848
_cell_angle_alpha   65.873
_cell_angle_beta   65.873
_cell_angle_gamma   48.524
_symmetry_Int_Tables_number   1
_cell_volume   415.585
_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
  Ge  Ge0  1  0.000  0.000  0.000  1.0
  Ge  Ge1  1  0.250  0.250  0.126  1.0
  Ge  Ge2  1  0.497  0.497  0.253  1.0
  Ge  Ge3  1  0.750  0.750  0.874  1.0
  Ge  Ge4  1  0.503  0.503  0.747  1.0
  Te  Te5  1  0.751  0.751  0.125  1.0
  Te  Te6  1  0.999  0.999  0.250  1.0
  Te  Te7  1  0.500  0.500  0.500  1.0
  Te  Te8  1  0.251  0.251  0.375  1.0
  Te  Te9  1  0.001  0.001  0.750  1.0
  Te  Te10  1  0.749  0.749  0.625  1.0
  Te  Te11  1  0.500  0.500  0.000  1.0
  Te  Te12  1  0.249  0.249  0.875  1.0
  As  As13  1  0.750  0.750  0.375  1.0
  As  As14  1  0.250  0.250  0.625  1.0
[/CIF]
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The compound described by Ge5(AsTe4)2 crystallizes in the monoclinic C2/m space group. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to two equivalent Te(1), two equivalent Te(2), and two equivalent Te(5) atoms to form GeTe6 octahedra that share corners with two equivalent Ge(1)Te6 octahedra, corners with two equivalent Ge(3)Te6 octahedra, edges with two equivalent As(1)Te6 octahedra, edges with four equivalent Ge(3)Te6 octahedra, and edges with six equivalent Ge(2)Te6 octahedra. The corner-sharing octahedra are not tilted. In the second Ge site, Ge(2) is bonded to one Te(2), one Te(4), one Te(5), and three equivalent Te(1) atoms to form GeTe6 octahedra that share corners with three equivalent Ge(2)Te6 octahedra, corners with three equivalent As(1)Te6 octahedra, edges with two equivalent Ge(2)Te6 octahedra, edges with two equivalent As(1)Te6 octahedra, edges with three equivalent Ge(1)Te6 octahedra, and edges with four equivalent Ge(3)Te6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the third Ge site, Ge(3) is bonded to one Te(1), one Te(3), one Te(4), one Te(5), and two equivalent Te(2) atoms to form GeTe6 octahedra that share  a cornercorner with one Ge(1)Te6 octahedra, corners with four equivalent Ge(3)Te6 octahedra, edges with two equivalent Ge(1)Te6 octahedra, edges with four equivalent Ge(2)Te6 octahedra, and edges with four equivalent As(1)Te6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. As(1) is bonded to one Te(1), one Te(2), one Te(3), and three equivalent Te(4) atoms to form AsTe6 octahedra that share corners with three equivalent Ge(2)Te6 octahedra, corners with three equivalent As(1)Te6 octahedra,  an edgeedge with one Ge(1)Te6 octahedra, edges with two equivalent Ge(2)Te6 octahedra, edges with two equivalent As(1)Te6 octahedra, and edges with four equivalent Ge(3)Te6 octahedra. The corner-sharing octahedra are not tilted. There are five inequivalent Te sites. In the first Te site, Te(1) is bonded to one Ge(1), one Ge(3), three equivalent Ge(2), and one As(1) atom to form TeGe5As octahedra that share corners with three equivalent Te(1)Ge5As octahedra, corners with three equivalent Te(4)Ge2As3 square pyramids, edges with two equivalent Te(1)Ge5As octahedra, edges with three equivalent Te(5)Ge6 octahedra, edges with two equivalent Te(4)Ge2As3 square pyramids, and edges with four equivalent Te(2)Ge4As square pyramids. The corner-sharing octahedral tilt angles range from 0-1°. In the second Te site, Te(2) is bonded to one Ge(1), one Ge(2), two equivalent Ge(3), and one As(1) atom to form TeGe4As square pyramids that share  a cornercorner with one Te(5)Ge6 octahedra, corners with two equivalent Te(4)Ge2As3 square pyramids, corners with three equivalent Te(2)Ge4As square pyramids, edges with two equivalent Te(5)Ge6 octahedra, edges with four equivalent Te(1)Ge5As octahedra, and edges with two equivalent Te(4)Ge2As3 square pyramids. The corner-sharing octahedra are not tilted. In the third Te site, Te(3) is bonded in a square co-planar geometry to two equivalent Ge(3) and two equivalent As(1) atoms. In the fourth Te site, Te(4) is bonded to one Ge(2), one Ge(3), and three equivalent As(1) atoms to form TeGe2As3 square pyramids that share corners with three equivalent Te(1)Ge5As octahedra, corners with two equivalent Te(4)Ge2As3 square pyramids, corners with two equivalent Te(2)Ge4As square pyramids,  an edgeedge with one Te(5)Ge6 octahedra, edges with two equivalent Te(1)Ge5As octahedra, edges with two equivalent Te(4)Ge2As3 square pyramids, and edges with two equivalent Te(2)Ge4As square pyramids. The corner-sharing octahedra are not tilted. In the fifth Te site, Te(5) is bonded to two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms to form TeGe6 octahedra that share corners with two equivalent Te(5)Ge6 octahedra, corners with two equivalent Te(2)Ge4As square pyramids, edges with six equivalent Te(1)Ge5As octahedra, edges with two equivalent Te(4)Ge2As3 square pyramids, and edges with four equivalent Te(2)Ge4As square pyramids. The corner-sharing octahedra are not tilted. is represented by the CIF card [CIF]
data_Ge5(Te4As)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.237
_cell_length_b   7.237
_cell_length_c   11.848
_cell_angle_alpha   65.873
_cell_angle_beta   65.873
_cell_angle_gamma   48.524
_symmetry_Int_Tables_number   1
_cell_volume   415.585
_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
  Ge  Ge0  1  0.000  0.000  0.000  1.0
  Ge  Ge1  1  0.250  0.250  0.126  1.0
  Ge  Ge2  1  0.497  0.497  0.253  1.0
  Ge  Ge3  1  0.750  0.750  0.874  1.0
  Ge  Ge4  1  0.503  0.503  0.747  1.0
  Te  Te5  1  0.751  0.751  0.125  1.0
  Te  Te6  1  0.999  0.999  0.250  1.0
  Te  Te7  1  0.500  0.500  0.500  1.0
  Te  Te8  1  0.251  0.251  0.375  1.0
  Te  Te9  1  0.001  0.001  0.750  1.0
  Te  Te10  1  0.749  0.749  0.625  1.0
  Te  Te11  1  0.500  0.500  0.000  1.0
  Te  Te12  1  0.249  0.249  0.875  1.0
  As  As13  1  0.750  0.750  0.375  1.0
  As  As14  1  0.250  0.250  0.625  1.0
[/CIF]
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