The material structure described by Sr2MgCuTeO6 crystallizes in the triclinic P1 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(4), one O(5), and one O(6) atom. In the second Sr site, Sr(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. Mg(1) is bonded to one O(1), one O(2), one O(3), and one O(6) atom to form MgO4 tetrahedra that share corners with two equivalent Te(1)O6 octahedra, corners with two equivalent Cu(1)O4 tetrahedra, and  an edgeedge with one Te(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 27-57°. Cu(1) is bonded to one O(1), one O(3), one O(4), and one O(5) atom to form CuO4 tetrahedra that share corners with four equivalent Te(1)O6 octahedra and corners with two equivalent Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 11-65°. Te(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form TeO6 octahedra that share corners with two equivalent Mg(1)O4 tetrahedra, corners with four equivalent Cu(1)O4 tetrahedra, and  an edgeedge with one Mg(1)O4 tetrahedra. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Sr(1), one Sr(2), one Mg(1), one Cu(1), and one Te(1) atom to form a mixture of distorted edge and corner-sharing OSr2MgCuTe trigonal bipyramids. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(2), one Mg(1), and one Te(1) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Sr(2), one Mg(1), one Cu(1), and one Te(1) atom. In the fourth O site, O(4) is bonded to one Sr(1), one Sr(2), one Cu(1), and one Te(1) atom to form a mixture of distorted edge and corner-sharing OSr2CuTe trigonal pyramids. In the fifth O site, O(5) is bonded in a distorted see-saw-like geometry to one Sr(1), one Sr(2), one Cu(1), 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(2), one Mg(1), and one Te(1) atom. is represented by the CIF file [CIF]
data_Sr2MgCuTeO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.987
_cell_length_b   6.070
_cell_length_c   5.717
_cell_angle_alpha   106.537
_cell_angle_beta   119.498
_cell_angle_gamma   100.465
_symmetry_Int_Tables_number   1
_cell_volume   159.923
_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  0.254  0.770  0.565  1.0
  Sr  Sr1  1  0.700  0.105  0.390  1.0
  Mg  Mg2  1  0.893  0.635  0.850  1.0
  Cu  Cu3  1  0.021  0.166  0.102  1.0
  Te  Te4  1  0.477  0.460  0.992  1.0
  O  O5  1  0.735  0.833  0.008  1.0
  O  O6  1  0.291  0.693  0.119  1.0
  O  O7  1  0.731  0.313  0.875  1.0
  O  O8  1  0.277  0.144  0.967  1.0
  O  O9  1  0.178  0.340  0.543  1.0
  O  O10  1  0.776  0.578  0.443  1.0
[/CIF]
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The material structure described by Sr2MgCuTeO6 crystallizes in the triclinic P1 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(4), one O(5), and one O(6) atom. In the second Sr site, Sr(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. Mg(1) is bonded to one O(1), one O(2), one O(3), and one O(6) atom to form MgO4 tetrahedra that share corners with two equivalent Te(1)O6 octahedra, corners with two equivalent Cu(1)O4 tetrahedra, and  an edgeedge with one Te(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 27-57°. Cu(1) is bonded to one O(1), one O(3), one O(4), and one O(5) atom to form CuO4 tetrahedra that share corners with four equivalent Te(1)O6 octahedra and corners with two equivalent Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 11-65°. Te(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form TeO6 octahedra that share corners with two equivalent Mg(1)O4 tetrahedra, corners with four equivalent Cu(1)O4 tetrahedra, and  an edgeedge with one Mg(1)O4 tetrahedra. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Sr(1), one Sr(2), one Mg(1), one Cu(1), and one Te(1) atom to form a mixture of distorted edge and corner-sharing OSr2MgCuTe trigonal bipyramids. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(2), one Mg(1), and one Te(1) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Sr(2), one Mg(1), one Cu(1), and one Te(1) atom. In the fourth O site, O(4) is bonded to one Sr(1), one Sr(2), one Cu(1), and one Te(1) atom to form a mixture of distorted edge and corner-sharing OSr2CuTe trigonal pyramids. In the fifth O site, O(5) is bonded in a distorted see-saw-like geometry to one Sr(1), one Sr(2), one Cu(1), 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(2), one Mg(1), and one Te(1) atom. is represented by the CIF file [CIF]
data_Sr2MgCuTeO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.987
_cell_length_b   6.070
_cell_length_c   5.717
_cell_angle_alpha   106.537
_cell_angle_beta   119.498
_cell_angle_gamma   100.465
_symmetry_Int_Tables_number   1
_cell_volume   159.923
_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  0.254  0.770  0.565  1.0
  Sr  Sr1  1  0.700  0.105  0.390  1.0
  Mg  Mg2  1  0.893  0.635  0.850  1.0
  Cu  Cu3  1  0.021  0.166  0.102  1.0
  Te  Te4  1  0.477  0.460  0.992  1.0
  O  O5  1  0.735  0.833  0.008  1.0
  O  O6  1  0.291  0.693  0.119  1.0
  O  O7  1  0.731  0.313  0.875  1.0
  O  O8  1  0.277  0.144  0.967  1.0
  O  O9  1  0.178  0.340  0.543  1.0
  O  O10  1  0.776  0.578  0.443  1.0
[/CIF]
.