The compound described by MgSn(GeO3)2 crystallizes in the monoclinic P2_1/c space group. Mg(1) is bonded to one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form distorted MgO5 square pyramids that share corners with two equivalent Ge(2)O4 tetrahedra and corners with four equivalent Ge(1)O4 tetrahedra. Sn(1) is bonded in a distorted rectangular see-saw-like geometry to one O(3), one O(4), one O(5), and one O(6) atom. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(4), one O(5), and two equivalent O(2) atoms to form GeO4 tetrahedra that share corners with four equivalent Mg(1)O5 square pyramids and corners with two equivalent Ge(1)O4 tetrahedra. In the second Ge site, Ge(2) is bonded to one O(3), one O(6), and two equivalent O(1) atoms to form GeO4 tetrahedra that share corners with two equivalent Mg(1)O5 square pyramids and corners with two equivalent Ge(2)O4 tetrahedra. There are six inequivalent O sites. In the first O site, O(5) is bonded in a 3-coordinate geometry to one Mg(1), one Sn(1), and one Ge(1) atom. In the second O site, O(6) is bonded in a distorted T-shaped geometry to one Mg(1), one Sn(1), and one Ge(2) atom. In the third O site, O(1) is bonded in a bent 150 degrees geometry to two equivalent Ge(2) atoms. In the fourth O site, O(2) is bonded in a trigonal planar geometry to one Mg(1) and two equivalent Ge(1) atoms. In the fifth O site, O(3) is bonded in a distorted trigonal planar geometry to one Mg(1), one Sn(1), and one Ge(2) atom. In the sixth O site, O(4) is bonded in a distorted trigonal planar geometry to one Mg(1), one Sn(1), and one Ge(1) atom. is represented by the CIF file [CIF]
data_MgSn(GeO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.212
_cell_length_b   5.474
_cell_length_c   10.510
_cell_angle_alpha   76.319
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   570.851
_cell_formula_units_Z   4
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
  Mg  Mg0  1  0.526  0.224  0.225  1.0
  Mg  Mg1  1  0.026  0.276  0.775  1.0
  Mg  Mg2  1  0.474  0.776  0.775  1.0
  Mg  Mg3  1  0.974  0.724  0.225  1.0
  Sn  Sn4  1  0.375  0.711  0.262  1.0
  Sn  Sn5  1  0.875  0.789  0.738  1.0
  Sn  Sn6  1  0.625  0.289  0.738  1.0
  Sn  Sn7  1  0.125  0.211  0.262  1.0
  Ge  Ge8  1  0.659  0.777  0.055  1.0
  Ge  Ge9  1  0.159  0.723  0.945  1.0
  Ge  Ge10  1  0.341  0.223  0.945  1.0
  Ge  Ge11  1  0.841  0.277  0.055  1.0
  Ge  Ge12  1  0.651  0.757  0.469  1.0
  Ge  Ge13  1  0.151  0.743  0.531  1.0
  Ge  Ge14  1  0.349  0.243  0.531  1.0
  Ge  Ge15  1  0.849  0.257  0.469  1.0
  O  O16  1  0.789  0.962  0.444  1.0
  O  O17  1  0.289  0.538  0.556  1.0
  O  O18  1  0.211  0.038  0.556  1.0
  O  O19  1  0.711  0.462  0.444  1.0
  O  O20  1  0.693  0.079  0.099  1.0
  O  O21  1  0.193  0.421  0.901  1.0
  O  O22  1  0.307  0.921  0.901  1.0
  O  O23  1  0.807  0.579  0.099  1.0
  O  O24  1  0.960  0.381  0.343  1.0
  O  O25  1  0.460  0.119  0.657  1.0
  O  O26  1  0.040  0.619  0.657  1.0
  O  O27  1  0.540  0.881  0.343  1.0
  O  O28  1  0.962  0.094  0.152  1.0
  O  O29  1  0.462  0.406  0.848  1.0
  O  O30  1  0.038  0.906  0.848  1.0
  O  O31  1  0.538  0.594  0.152  1.0
  O  O32  1  0.616  0.852  0.891  1.0
  O  O33  1  0.116  0.648  0.109  1.0
  O  O34  1  0.384  0.148  0.109  1.0
  O  O35  1  0.884  0.352  0.891  1.0
  O  O36  1  0.580  0.680  0.625  1.0
  O  O37  1  0.080  0.820  0.375  1.0
  O  O38  1  0.420  0.320  0.375  1.0
  O  O39  1  0.920  0.180  0.625  1.0
[/CIF]
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The compound described by MgSn(GeO3)2 crystallizes in the monoclinic P2_1/c space group. Mg(1) is bonded to one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form distorted MgO5 square pyramids that share corners with two equivalent Ge(2)O4 tetrahedra and corners with four equivalent Ge(1)O4 tetrahedra. Sn(1) is bonded in a distorted rectangular see-saw-like geometry to one O(3), one O(4), one O(5), and one O(6) atom. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(4), one O(5), and two equivalent O(2) atoms to form GeO4 tetrahedra that share corners with four equivalent Mg(1)O5 square pyramids and corners with two equivalent Ge(1)O4 tetrahedra. In the second Ge site, Ge(2) is bonded to one O(3), one O(6), and two equivalent O(1) atoms to form GeO4 tetrahedra that share corners with two equivalent Mg(1)O5 square pyramids and corners with two equivalent Ge(2)O4 tetrahedra. There are six inequivalent O sites. In the first O site, O(5) is bonded in a 3-coordinate geometry to one Mg(1), one Sn(1), and one Ge(1) atom. In the second O site, O(6) is bonded in a distorted T-shaped geometry to one Mg(1), one Sn(1), and one Ge(2) atom. In the third O site, O(1) is bonded in a bent 150 degrees geometry to two equivalent Ge(2) atoms. In the fourth O site, O(2) is bonded in a trigonal planar geometry to one Mg(1) and two equivalent Ge(1) atoms. In the fifth O site, O(3) is bonded in a distorted trigonal planar geometry to one Mg(1), one Sn(1), and one Ge(2) atom. In the sixth O site, O(4) is bonded in a distorted trigonal planar geometry to one Mg(1), one Sn(1), and one Ge(1) atom. is represented by the CIF file [CIF]
data_MgSn(GeO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.212
_cell_length_b   5.474
_cell_length_c   10.510
_cell_angle_alpha   76.319
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   570.851
_cell_formula_units_Z   4
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
  Mg  Mg0  1  0.526  0.224  0.225  1.0
  Mg  Mg1  1  0.026  0.276  0.775  1.0
  Mg  Mg2  1  0.474  0.776  0.775  1.0
  Mg  Mg3  1  0.974  0.724  0.225  1.0
  Sn  Sn4  1  0.375  0.711  0.262  1.0
  Sn  Sn5  1  0.875  0.789  0.738  1.0
  Sn  Sn6  1  0.625  0.289  0.738  1.0
  Sn  Sn7  1  0.125  0.211  0.262  1.0
  Ge  Ge8  1  0.659  0.777  0.055  1.0
  Ge  Ge9  1  0.159  0.723  0.945  1.0
  Ge  Ge10  1  0.341  0.223  0.945  1.0
  Ge  Ge11  1  0.841  0.277  0.055  1.0
  Ge  Ge12  1  0.651  0.757  0.469  1.0
  Ge  Ge13  1  0.151  0.743  0.531  1.0
  Ge  Ge14  1  0.349  0.243  0.531  1.0
  Ge  Ge15  1  0.849  0.257  0.469  1.0
  O  O16  1  0.789  0.962  0.444  1.0
  O  O17  1  0.289  0.538  0.556  1.0
  O  O18  1  0.211  0.038  0.556  1.0
  O  O19  1  0.711  0.462  0.444  1.0
  O  O20  1  0.693  0.079  0.099  1.0
  O  O21  1  0.193  0.421  0.901  1.0
  O  O22  1  0.307  0.921  0.901  1.0
  O  O23  1  0.807  0.579  0.099  1.0
  O  O24  1  0.960  0.381  0.343  1.0
  O  O25  1  0.460  0.119  0.657  1.0
  O  O26  1  0.040  0.619  0.657  1.0
  O  O27  1  0.540  0.881  0.343  1.0
  O  O28  1  0.962  0.094  0.152  1.0
  O  O29  1  0.462  0.406  0.848  1.0
  O  O30  1  0.038  0.906  0.848  1.0
  O  O31  1  0.538  0.594  0.152  1.0
  O  O32  1  0.616  0.852  0.891  1.0
  O  O33  1  0.116  0.648  0.109  1.0
  O  O34  1  0.384  0.148  0.109  1.0
  O  O35  1  0.884  0.352  0.891  1.0
  O  O36  1  0.580  0.680  0.625  1.0
  O  O37  1  0.080  0.820  0.375  1.0
  O  O38  1  0.420  0.320  0.375  1.0
  O  O39  1  0.920  0.180  0.625  1.0
[/CIF]
.