The material described by Sr6Mg(Te4O11)2 crystallizes in the triclinic P1 space group. There are six inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to one O(10), one O(13), one O(15), one O(18), one O(19), one O(6), and one O(8) atom. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one O(14), one O(15), one O(16), one O(17), one O(20), one O(5), one O(7), and one O(9) atom. In the third Sr site, Sr(3) is bonded in a 8-coordinate geometry to one O(10), one O(11), one O(12), one O(15), one O(17), one O(19), one O(2), and one O(5) atom. In the fourth Sr site, Sr(4) is bonded in a 6-coordinate geometry to one O(1), one O(11), one O(12), one O(16), one O(6), and one O(9) atom. In the fifth Sr site, Sr(5) is bonded in a 7-coordinate geometry to one O(1), one O(14), one O(2), one O(22), one O(3), one O(4), and one O(9) atom. In the sixth Sr site, Sr(6) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(13), one O(2), one O(21), and one O(3) atom. Mg(1) is bonded in a tetrahedral geometry to one O(17), one O(18), one O(20), and one O(6) atom. There are eight inequivalent Te sites. In the first Te site, Te(1) is bonded in a distorted T-shaped geometry to one O(19), one O(2), and one O(5) atom. In the second Te site, Te(2) is bonded in an L-shaped geometry to one O(1) and one O(20) atom. In the third Te site, Te(3) is bonded in a rectangular see-saw-like geometry to one O(11), one O(18), one O(22), and one O(7) atom. In the fourth Te site, Te(4) is bonded in a 3-coordinate geometry to one O(12), one O(17), and one O(21) atom. In the fifth Te site, Te(5) is bonded in a distorted rectangular see-saw-like geometry to one O(14), one O(15), one O(21), and one O(6) atom. In the sixth Te site, Te(6) is bonded in a 3-coordinate geometry to one O(13), one O(16), and one O(22) atom. In the seventh Te site, Te(7) is bonded in a distorted trigonal non-coplanar geometry to one O(3), one O(8), and one O(9) atom. In the eighth Te site, Te(8) is bonded in a trigonal non-coplanar geometry to one O(10), one O(4), and one O(7) atom. There are twenty-two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Sr(4), one Sr(5), one Sr(6), and one Te(2) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Sr(3), one Sr(5), one Sr(6), and one Te(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Sr(5), one Sr(6), and one Te(7) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Sr(5) and one Te(8) atom. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Sr(2), one Sr(3), and one Te(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(4), one Mg(1), and one Te(5) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Sr(2), one Te(3), and one Te(8) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Sr(1) and one Te(7) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Sr(2), one Sr(4), one Sr(5), and one Te(7) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(3), one Sr(6), and one Te(8) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Sr(3), one Sr(4), and one Te(3) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Sr(3), one Sr(4), and one Te(4) atom. In the thirteenth O site, O(13) is bonded in a trigonal planar geometry to one Sr(1), one Sr(6), and one Te(6) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one Sr(2), one Sr(5), and one Te(5) atom. In the fifteenth O site, O(15) is bonded in a distorted tetrahedral geometry to one Sr(1), one Sr(2), one Sr(3), and one Te(5) atom. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to one Sr(2), one Sr(4), and one Te(6) atom. In the seventeenth O site, O(17) is bonded in a 3-coordinate geometry to one Sr(2), one Sr(3), one Mg(1), and one Te(4) atom. In the eighteenth O site, O(18) is bonded in a 2-coordinate geometry to one Sr(1), one Mg(1), and one Te(3) atom. In the nineteenth O site, O(19) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(3), and one Te(1) atom. In the twentieth O site, O(20) is bonded in a 2-coordinate geometry to one Sr(2), one Mg(1), and one Te(2) atom. In the twenty-first O site, O(21) is bonded in a distorted trigonal planar geometry to one Sr(6), one Te(4), and one Te(5) atom. In the twenty-second O site, O(22) is bonded in a distorted trigonal planar geometry to one Sr(5), one Te(3), and one Te(6) atom. is represented by the CIF card [CIF]
data_Sr6Mg(Te4O11)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.210
_cell_length_b   9.442
_cell_length_c   9.794
_cell_angle_alpha   96.617
_cell_angle_beta   112.166
_cell_angle_gamma   98.788
_symmetry_Int_Tables_number   1
_cell_volume   682.334
_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
  Sr  Sr0  1  0.363  0.084  0.159  1.0
  Sr  Sr1  1  0.656  0.964  0.888  1.0
  Sr  Sr2  1  0.879  0.086  0.331  1.0
  Sr  Sr3  1  0.159  0.897  0.664  1.0
  Sr  Sr4  1  0.302  0.538  0.614  1.0
  Sr  Sr5  1  0.700  0.476  0.357  1.0
  Mg  Mg6  1  0.013  0.875  0.928  1.0
  Te  Te7  1  0.053  0.338  0.193  1.0
  Te  Te8  1  0.868  0.587  0.724  1.0
  Te  Te9  1  0.995  0.222  0.773  1.0
  Te  Te10  1  0.969  0.738  0.220  1.0
  Te  Te11  1  0.436  0.745  0.047  1.0
  Te  Te12  1  0.494  0.317  0.927  1.0
  Te  Te13  1  0.511  0.803  0.460  1.0
  Te  Te14  1  0.502  0.176  0.551  1.0
  O  O15  1  0.026  0.621  0.619  1.0
  O  O16  1  0.009  0.411  0.362  1.0
  O  O17  1  0.454  0.597  0.411  1.0
  O  O18  1  0.505  0.357  0.651  1.0
  O  O19  1  0.824  0.210  0.091  1.0
  O  O20  1  0.247  0.849  0.951  1.0
  O  O21  1  0.708  0.124  0.702  1.0
  O  O22  1  0.335  0.856  0.292  1.0
  O  O23  1  0.403  0.821  0.601  1.0
  O  O24  1  0.616  0.220  0.418  1.0
  O  O25  1  0.005  0.111  0.608  1.0
  O  O26  1  0.002  0.870  0.391  1.0
  O  O27  1  0.479  0.319  0.115  1.0
  O  O28  1  0.480  0.709  0.872  1.0
  O  O29  1  0.596  0.931  0.135  1.0
  O  O30  1  0.424  0.113  0.851  1.0
  O  O31  1  0.928  0.875  0.087  1.0
  O  O32  1  0.054  0.090  0.909  1.0
  O  O33  1  0.180  0.199  0.285  1.0
  O  O34  1  0.821  0.787  0.733  1.0
  O  O35  1  0.728  0.643  0.180  1.0
  O  O36  1  0.256  0.358  0.825  1.0
[/CIF]
.
The material described by Sr6Mg(Te4O11)2 crystallizes in the triclinic P1 space group. There are six inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to one O(10), one O(13), one O(15), one O(18), one O(19), one O(6), and one O(8) atom. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one O(14), one O(15), one O(16), one O(17), one O(20), one O(5), one O(7), and one O(9) atom. In the third Sr site, Sr(3) is bonded in a 8-coordinate geometry to one O(10), one O(11), one O(12), one O(15), one O(17), one O(19), one O(2), and one O(5) atom. In the fourth Sr site, Sr(4) is bonded in a 6-coordinate geometry to one O(1), one O(11), one O(12), one O(16), one O(6), and one O(9) atom. In the fifth Sr site, Sr(5) is bonded in a 7-coordinate geometry to one O(1), one O(14), one O(2), one O(22), one O(3), one O(4), and one O(9) atom. In the sixth Sr site, Sr(6) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(13), one O(2), one O(21), and one O(3) atom. Mg(1) is bonded in a tetrahedral geometry to one O(17), one O(18), one O(20), and one O(6) atom. There are eight inequivalent Te sites. In the first Te site, Te(1) is bonded in a distorted T-shaped geometry to one O(19), one O(2), and one O(5) atom. In the second Te site, Te(2) is bonded in an L-shaped geometry to one O(1) and one O(20) atom. In the third Te site, Te(3) is bonded in a rectangular see-saw-like geometry to one O(11), one O(18), one O(22), and one O(7) atom. In the fourth Te site, Te(4) is bonded in a 3-coordinate geometry to one O(12), one O(17), and one O(21) atom. In the fifth Te site, Te(5) is bonded in a distorted rectangular see-saw-like geometry to one O(14), one O(15), one O(21), and one O(6) atom. In the sixth Te site, Te(6) is bonded in a 3-coordinate geometry to one O(13), one O(16), and one O(22) atom. In the seventh Te site, Te(7) is bonded in a distorted trigonal non-coplanar geometry to one O(3), one O(8), and one O(9) atom. In the eighth Te site, Te(8) is bonded in a trigonal non-coplanar geometry to one O(10), one O(4), and one O(7) atom. There are twenty-two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Sr(4), one Sr(5), one Sr(6), and one Te(2) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Sr(3), one Sr(5), one Sr(6), and one Te(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Sr(5), one Sr(6), and one Te(7) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Sr(5) and one Te(8) atom. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Sr(2), one Sr(3), and one Te(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(4), one Mg(1), and one Te(5) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Sr(2), one Te(3), and one Te(8) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Sr(1) and one Te(7) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Sr(2), one Sr(4), one Sr(5), and one Te(7) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(3), one Sr(6), and one Te(8) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Sr(3), one Sr(4), and one Te(3) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Sr(3), one Sr(4), and one Te(4) atom. In the thirteenth O site, O(13) is bonded in a trigonal planar geometry to one Sr(1), one Sr(6), and one Te(6) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one Sr(2), one Sr(5), and one Te(5) atom. In the fifteenth O site, O(15) is bonded in a distorted tetrahedral geometry to one Sr(1), one Sr(2), one Sr(3), and one Te(5) atom. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to one Sr(2), one Sr(4), and one Te(6) atom. In the seventeenth O site, O(17) is bonded in a 3-coordinate geometry to one Sr(2), one Sr(3), one Mg(1), and one Te(4) atom. In the eighteenth O site, O(18) is bonded in a 2-coordinate geometry to one Sr(1), one Mg(1), and one Te(3) atom. In the nineteenth O site, O(19) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(3), and one Te(1) atom. In the twentieth O site, O(20) is bonded in a 2-coordinate geometry to one Sr(2), one Mg(1), and one Te(2) atom. In the twenty-first O site, O(21) is bonded in a distorted trigonal planar geometry to one Sr(6), one Te(4), and one Te(5) atom. In the twenty-second O site, O(22) is bonded in a distorted trigonal planar geometry to one Sr(5), one Te(3), and one Te(6) atom. is represented by the CIF card [CIF]
data_Sr6Mg(Te4O11)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.210
_cell_length_b   9.442
_cell_length_c   9.794
_cell_angle_alpha   96.617
_cell_angle_beta   112.166
_cell_angle_gamma   98.788
_symmetry_Int_Tables_number   1
_cell_volume   682.334
_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
  Sr  Sr0  1  0.363  0.084  0.159  1.0
  Sr  Sr1  1  0.656  0.964  0.888  1.0
  Sr  Sr2  1  0.879  0.086  0.331  1.0
  Sr  Sr3  1  0.159  0.897  0.664  1.0
  Sr  Sr4  1  0.302  0.538  0.614  1.0
  Sr  Sr5  1  0.700  0.476  0.357  1.0
  Mg  Mg6  1  0.013  0.875  0.928  1.0
  Te  Te7  1  0.053  0.338  0.193  1.0
  Te  Te8  1  0.868  0.587  0.724  1.0
  Te  Te9  1  0.995  0.222  0.773  1.0
  Te  Te10  1  0.969  0.738  0.220  1.0
  Te  Te11  1  0.436  0.745  0.047  1.0
  Te  Te12  1  0.494  0.317  0.927  1.0
  Te  Te13  1  0.511  0.803  0.460  1.0
  Te  Te14  1  0.502  0.176  0.551  1.0
  O  O15  1  0.026  0.621  0.619  1.0
  O  O16  1  0.009  0.411  0.362  1.0
  O  O17  1  0.454  0.597  0.411  1.0
  O  O18  1  0.505  0.357  0.651  1.0
  O  O19  1  0.824  0.210  0.091  1.0
  O  O20  1  0.247  0.849  0.951  1.0
  O  O21  1  0.708  0.124  0.702  1.0
  O  O22  1  0.335  0.856  0.292  1.0
  O  O23  1  0.403  0.821  0.601  1.0
  O  O24  1  0.616  0.220  0.418  1.0
  O  O25  1  0.005  0.111  0.608  1.0
  O  O26  1  0.002  0.870  0.391  1.0
  O  O27  1  0.479  0.319  0.115  1.0
  O  O28  1  0.480  0.709  0.872  1.0
  O  O29  1  0.596  0.931  0.135  1.0
  O  O30  1  0.424  0.113  0.851  1.0
  O  O31  1  0.928  0.875  0.087  1.0
  O  O32  1  0.054  0.090  0.909  1.0
  O  O33  1  0.180  0.199  0.285  1.0
  O  O34  1  0.821  0.787  0.733  1.0
  O  O35  1  0.728  0.643  0.180  1.0
  O  O36  1  0.256  0.358  0.825  1.0
[/CIF]
.