The compound described by MgPr6(GeS7)2 crystallizes in the trigonal P3 space group. Mg(1) is bonded in an octahedral geometry to three equivalent S(1) and three equivalent S(2) atoms. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 8-coordinate geometry to one S(3), one S(6), two equivalent S(1), two equivalent S(2), and two equivalent S(5) atoms. In the second Pr site, Pr(2) is bonded in a 8-coordinate geometry to one S(4), one S(5), two equivalent S(1), two equivalent S(2), and two equivalent S(6) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a tetrahedral geometry to one S(3) and three equivalent S(5) atoms. In the second Ge site, Ge(2) is bonded in a tetrahedral geometry to one S(4) and three equivalent S(6) atoms. There are six inequivalent S sites. In the first S site, S(1) is bonded to one Mg(1), two equivalent Pr(1), and two equivalent Pr(2) atoms to form distorted SPr4Mg trigonal bipyramids that share corners with two equivalent S(3)Pr3Ge tetrahedra, corners with two equivalent S(4)Pr3Ge tetrahedra, corners with two equivalent S(1)Pr4Mg trigonal bipyramids, and edges with two equivalent S(1)Pr4Mg trigonal bipyramids. In the second S site, S(2) is bonded in a 5-coordinate geometry to one Mg(1), two equivalent Pr(1), and two equivalent Pr(2) atoms. In the third S site, S(3) is bonded to three equivalent Pr(1) and one Ge(1) atom to form corner-sharing SPr3Ge tetrahedra. In the fourth S site, S(4) is bonded to three equivalent Pr(2) and one Ge(2) atom to form corner-sharing SPr3Ge tetrahedra. In the fifth S site, S(5) is bonded in a distorted rectangular see-saw-like geometry to one Pr(2), two equivalent Pr(1), and one Ge(1) atom. In the sixth S site, S(6) is bonded in a distorted rectangular see-saw-like geometry to one Pr(1), two equivalent Pr(2), and one Ge(2) atom. is represented by the CIF file [CIF]
data_Pr6Mg(GeS7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.298
_cell_length_b   10.298
_cell_length_c   5.803
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   532.948
_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
  Pr  Pr0  1  0.231  0.358  0.242  1.0
  Pr  Pr1  1  0.126  0.769  0.242  1.0
  Pr  Pr2  1  0.642  0.874  0.242  1.0
  Pr  Pr3  1  0.770  0.643  0.749  1.0
  Pr  Pr4  1  0.873  0.230  0.749  1.0
  Pr  Pr5  1  0.357  0.127  0.749  1.0
  Mg  Mg6  1  0.000  0.000  0.480  1.0
  Ge  Ge7  1  0.333  0.667  0.825  1.0
  Ge  Ge8  1  0.667  0.333  0.334  1.0
  S  S9  1  0.914  0.160  0.240  1.0
  S  S10  1  0.246  0.086  0.240  1.0
  S  S11  1  0.840  0.754  0.240  1.0
  S  S12  1  0.089  0.842  0.717  1.0
  S  S13  1  0.753  0.911  0.717  1.0
  S  S14  1  0.158  0.247  0.717  1.0
  S  S15  1  0.333  0.667  0.450  1.0
  S  S16  1  0.667  0.333  0.959  1.0
  S  S17  1  0.413  0.893  0.977  1.0
  S  S18  1  0.480  0.587  0.977  1.0
  S  S19  1  0.107  0.520  0.977  1.0
  S  S20  1  0.586  0.107  0.483  1.0
  S  S21  1  0.521  0.414  0.483  1.0
  S  S22  1  0.893  0.479  0.483  1.0
[/CIF]
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The compound described by MgPr6(GeS7)2 crystallizes in the trigonal P3 space group. Mg(1) is bonded in an octahedral geometry to three equivalent S(1) and three equivalent S(2) atoms. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 8-coordinate geometry to one S(3), one S(6), two equivalent S(1), two equivalent S(2), and two equivalent S(5) atoms. In the second Pr site, Pr(2) is bonded in a 8-coordinate geometry to one S(4), one S(5), two equivalent S(1), two equivalent S(2), and two equivalent S(6) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a tetrahedral geometry to one S(3) and three equivalent S(5) atoms. In the second Ge site, Ge(2) is bonded in a tetrahedral geometry to one S(4) and three equivalent S(6) atoms. There are six inequivalent S sites. In the first S site, S(1) is bonded to one Mg(1), two equivalent Pr(1), and two equivalent Pr(2) atoms to form distorted SPr4Mg trigonal bipyramids that share corners with two equivalent S(3)Pr3Ge tetrahedra, corners with two equivalent S(4)Pr3Ge tetrahedra, corners with two equivalent S(1)Pr4Mg trigonal bipyramids, and edges with two equivalent S(1)Pr4Mg trigonal bipyramids. In the second S site, S(2) is bonded in a 5-coordinate geometry to one Mg(1), two equivalent Pr(1), and two equivalent Pr(2) atoms. In the third S site, S(3) is bonded to three equivalent Pr(1) and one Ge(1) atom to form corner-sharing SPr3Ge tetrahedra. In the fourth S site, S(4) is bonded to three equivalent Pr(2) and one Ge(2) atom to form corner-sharing SPr3Ge tetrahedra. In the fifth S site, S(5) is bonded in a distorted rectangular see-saw-like geometry to one Pr(2), two equivalent Pr(1), and one Ge(1) atom. In the sixth S site, S(6) is bonded in a distorted rectangular see-saw-like geometry to one Pr(1), two equivalent Pr(2), and one Ge(2) atom. is represented by the CIF file [CIF]
data_Pr6Mg(GeS7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.298
_cell_length_b   10.298
_cell_length_c   5.803
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   532.948
_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
  Pr  Pr0  1  0.231  0.358  0.242  1.0
  Pr  Pr1  1  0.126  0.769  0.242  1.0
  Pr  Pr2  1  0.642  0.874  0.242  1.0
  Pr  Pr3  1  0.770  0.643  0.749  1.0
  Pr  Pr4  1  0.873  0.230  0.749  1.0
  Pr  Pr5  1  0.357  0.127  0.749  1.0
  Mg  Mg6  1  0.000  0.000  0.480  1.0
  Ge  Ge7  1  0.333  0.667  0.825  1.0
  Ge  Ge8  1  0.667  0.333  0.334  1.0
  S  S9  1  0.914  0.160  0.240  1.0
  S  S10  1  0.246  0.086  0.240  1.0
  S  S11  1  0.840  0.754  0.240  1.0
  S  S12  1  0.089  0.842  0.717  1.0
  S  S13  1  0.753  0.911  0.717  1.0
  S  S14  1  0.158  0.247  0.717  1.0
  S  S15  1  0.333  0.667  0.450  1.0
  S  S16  1  0.667  0.333  0.959  1.0
  S  S17  1  0.413  0.893  0.977  1.0
  S  S18  1  0.480  0.587  0.977  1.0
  S  S19  1  0.107  0.520  0.977  1.0
  S  S20  1  0.586  0.107  0.483  1.0
  S  S21  1  0.521  0.414  0.483  1.0
  S  S22  1  0.893  0.479  0.483  1.0
[/CIF]
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