The compound 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 8-coordinate geometry to one O(10), one O(13), one O(15), one O(17), 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(18), one O(20), one O(5), and one O(9) atom. In the third Sr site, Sr(3) is bonded in a 7-coordinate geometry to one O(10), one O(11), one O(12), one O(15), one O(17), one O(19), and one O(5) atom. In the fourth Sr site, Sr(4) is bonded in a 7-coordinate geometry to one O(11), one O(12), one O(16), one O(18), one O(20), 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(19), one O(2), 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(3), and one O(4) atom. Mg(1) is bonded in a 4-coordinate geometry to one O(14), one O(21), one O(22), and one O(4) 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 a distorted 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 distorted trigonal non-coplanar 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 T-shaped geometry to one O(14), one O(15), and one O(6) atom. In the sixth Te site, Te(6) is bonded in a distorted see-saw-like geometry to one O(13), one O(16), one O(22), and one O(5) atom. In the seventh Te site, Te(7) is bonded in a 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 distorted 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 distorted trigonal planar geometry to one Sr(5), one Sr(6), and one Te(2) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to 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 4-coordinate geometry to one Sr(5), one Sr(6), one Mg(1), and one Te(8) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Sr(2), one Sr(3), one Te(1), and one Te(6) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(4), and one Te(5) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Te(3) and one Te(8) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 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 to one Sr(1), one Sr(3), one Sr(6), and one Te(8) atom to form distorted corner-sharing OSr3Te tetrahedra. In the eleventh O site, O(11) is bonded in a distorted trigonal non-coplanar geometry to one Sr(3), one Sr(4), and one Te(3) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate 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 4-coordinate geometry to one Sr(2), one Sr(5), one Mg(1), and one Te(5) atom. In the fifteenth O site, O(15) is bonded in a 4-coordinate 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 distorted trigonal planar geometry to one Sr(2), one Sr(4), and one Te(6) atom. In the seventeenth O site, O(17) is bonded to one Sr(1), one Sr(2), one Sr(3), and one Te(4) atom to form distorted corner-sharing OSr3Te tetrahedra. In the eighteenth O site, O(18) is bonded in a distorted single-bond geometry to one Sr(1), one Sr(2), one Sr(4), and one Te(3) atom. In the nineteenth O site, O(19) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(3), one Sr(5), and one Te(1) atom. In the twentieth O site, O(20) is bonded in a trigonal non-coplanar geometry to one Sr(2), one Sr(4), and one Te(2) atom. In the twenty-first O site, O(21) is bonded in a bent 150 degrees geometry to one Mg(1) and one Te(4) atom. In the twenty-second O site, O(22) is bonded in a distorted T-shaped geometry to one Mg(1), one Te(3), and one Te(6) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr6Mg(Te4O11)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.738
_cell_length_b   9.915
_cell_length_c   9.715
_cell_angle_alpha   103.687
_cell_angle_beta   106.596
_cell_angle_gamma   99.393
_symmetry_Int_Tables_number   1
_cell_volume   672.316
_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  0.303  0.053  0.160  1.0
  Sr  Sr1  1  0.714  0.941  0.896  1.0
  Sr  Sr2  1  0.864  0.061  0.331  1.0
  Sr  Sr3  1  0.137  0.921  0.692  1.0
  Sr  Sr4  1  0.257  0.541  0.555  1.0
  Sr  Sr5  1  0.684  0.456  0.397  1.0
  Mg  Mg6  1  0.577  0.517  0.849  1.0
  Te  Te7  1  0.041  0.331  0.177  1.0
  Te  Te8  1  0.926  0.620  0.806  1.0
  Te  Te9  1  0.061  0.266  0.791  1.0
  Te  Te10  1  0.962  0.735  0.201  1.0
  Te  Te11  1  0.397  0.743  0.012  1.0
  Te  Te12  1  0.559  0.275  0.981  1.0
  Te  Te13  1  0.508  0.808  0.455  1.0
  Te  Te14  1  0.520  0.200  0.576  1.0
  O  O15  1  0.969  0.524  0.624  1.0
  O  O16  1  0.974  0.461  0.317  1.0
  O  O17  1  0.452  0.604  0.387  1.0
  O  O18  1  0.513  0.397  0.624  1.0
  O  O19  1  0.813  0.185  0.106  1.0
  O  O20  1  0.250  0.859  0.932  1.0
  O  O21  1  0.742  0.206  0.731  1.0
  O  O22  1  0.345  0.857  0.299  1.0
  O  O23  1  0.372  0.815  0.590  1.0
  O  O24  1  0.613  0.194  0.415  1.0
  O  O25  1  0.053  0.142  0.610  1.0
  O  O26  1  0.915  0.821  0.380  1.0
  O  O27  1  0.478  0.283  0.146  1.0
  O  O28  1  0.457  0.675  0.830  1.0
  O  O29  1  0.595  0.909  0.114  1.0
  O  O30  1  0.457  0.086  0.858  1.0
  O  O31  1  0.972  0.900  0.130  1.0
  O  O32  1  0.065  0.130  0.899  1.0
  O  O33  1  0.169  0.242  0.312  1.0
  O  O34  1  0.864  0.783  0.743  1.0
  O  O35  1  0.719  0.616  0.071  1.0
  O  O36  1  0.359  0.357  0.865  1.0
[/CIF]
.
The compound 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 8-coordinate geometry to one O(10), one O(13), one O(15), one O(17), 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(18), one O(20), one O(5), and one O(9) atom. In the third Sr site, Sr(3) is bonded in a 7-coordinate geometry to one O(10), one O(11), one O(12), one O(15), one O(17), one O(19), and one O(5) atom. In the fourth Sr site, Sr(4) is bonded in a 7-coordinate geometry to one O(11), one O(12), one O(16), one O(18), one O(20), 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(19), one O(2), 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(3), and one O(4) atom. Mg(1) is bonded in a 4-coordinate geometry to one O(14), one O(21), one O(22), and one O(4) 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 a distorted 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 distorted trigonal non-coplanar 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 T-shaped geometry to one O(14), one O(15), and one O(6) atom. In the sixth Te site, Te(6) is bonded in a distorted see-saw-like geometry to one O(13), one O(16), one O(22), and one O(5) atom. In the seventh Te site, Te(7) is bonded in a 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 distorted 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 distorted trigonal planar geometry to one Sr(5), one Sr(6), and one Te(2) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to 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 4-coordinate geometry to one Sr(5), one Sr(6), one Mg(1), and one Te(8) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Sr(2), one Sr(3), one Te(1), and one Te(6) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(4), and one Te(5) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Te(3) and one Te(8) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 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 to one Sr(1), one Sr(3), one Sr(6), and one Te(8) atom to form distorted corner-sharing OSr3Te tetrahedra. In the eleventh O site, O(11) is bonded in a distorted trigonal non-coplanar geometry to one Sr(3), one Sr(4), and one Te(3) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate 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 4-coordinate geometry to one Sr(2), one Sr(5), one Mg(1), and one Te(5) atom. In the fifteenth O site, O(15) is bonded in a 4-coordinate 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 distorted trigonal planar geometry to one Sr(2), one Sr(4), and one Te(6) atom. In the seventeenth O site, O(17) is bonded to one Sr(1), one Sr(2), one Sr(3), and one Te(4) atom to form distorted corner-sharing OSr3Te tetrahedra. In the eighteenth O site, O(18) is bonded in a distorted single-bond geometry to one Sr(1), one Sr(2), one Sr(4), and one Te(3) atom. In the nineteenth O site, O(19) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(3), one Sr(5), and one Te(1) atom. In the twentieth O site, O(20) is bonded in a trigonal non-coplanar geometry to one Sr(2), one Sr(4), and one Te(2) atom. In the twenty-first O site, O(21) is bonded in a bent 150 degrees geometry to one Mg(1) and one Te(4) atom. In the twenty-second O site, O(22) is bonded in a distorted T-shaped geometry to one Mg(1), one Te(3), and one Te(6) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr6Mg(Te4O11)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.738
_cell_length_b   9.915
_cell_length_c   9.715
_cell_angle_alpha   103.687
_cell_angle_beta   106.596
_cell_angle_gamma   99.393
_symmetry_Int_Tables_number   1
_cell_volume   672.316
_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  0.303  0.053  0.160  1.0
  Sr  Sr1  1  0.714  0.941  0.896  1.0
  Sr  Sr2  1  0.864  0.061  0.331  1.0
  Sr  Sr3  1  0.137  0.921  0.692  1.0
  Sr  Sr4  1  0.257  0.541  0.555  1.0
  Sr  Sr5  1  0.684  0.456  0.397  1.0
  Mg  Mg6  1  0.577  0.517  0.849  1.0
  Te  Te7  1  0.041  0.331  0.177  1.0
  Te  Te8  1  0.926  0.620  0.806  1.0
  Te  Te9  1  0.061  0.266  0.791  1.0
  Te  Te10  1  0.962  0.735  0.201  1.0
  Te  Te11  1  0.397  0.743  0.012  1.0
  Te  Te12  1  0.559  0.275  0.981  1.0
  Te  Te13  1  0.508  0.808  0.455  1.0
  Te  Te14  1  0.520  0.200  0.576  1.0
  O  O15  1  0.969  0.524  0.624  1.0
  O  O16  1  0.974  0.461  0.317  1.0
  O  O17  1  0.452  0.604  0.387  1.0
  O  O18  1  0.513  0.397  0.624  1.0
  O  O19  1  0.813  0.185  0.106  1.0
  O  O20  1  0.250  0.859  0.932  1.0
  O  O21  1  0.742  0.206  0.731  1.0
  O  O22  1  0.345  0.857  0.299  1.0
  O  O23  1  0.372  0.815  0.590  1.0
  O  O24  1  0.613  0.194  0.415  1.0
  O  O25  1  0.053  0.142  0.610  1.0
  O  O26  1  0.915  0.821  0.380  1.0
  O  O27  1  0.478  0.283  0.146  1.0
  O  O28  1  0.457  0.675  0.830  1.0
  O  O29  1  0.595  0.909  0.114  1.0
  O  O30  1  0.457  0.086  0.858  1.0
  O  O31  1  0.972  0.900  0.130  1.0
  O  O32  1  0.065  0.130  0.899  1.0
  O  O33  1  0.169  0.242  0.312  1.0
  O  O34  1  0.864  0.783  0.743  1.0
  O  O35  1  0.719  0.616  0.071  1.0
  O  O36  1  0.359  0.357  0.865  1.0
[/CIF]
.