The compound described by Na2MgGe2(SbO5)2 crystallizes in the triclinic P1 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one O(1), one O(3), one O(6), one O(7), one O(8), and one O(9) atom. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(10), one O(2), one O(4), one O(5), one O(6), and one O(9) atom. Mg(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), one O(5), and one O(7) atom. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(10), one O(3), one O(4), and one O(9) atom to form GeO4 tetrahedra that share corners with two equivalent Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-56°. In the second Ge site, Ge(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form GeO4 tetrahedra that share corners with two equivalent Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-52°. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), one O(5), and one O(9) atom. In the second Sb site, Sb(2) is bonded to one O(1), one O(10), one O(2), one O(4), one O(6), and one O(8) atom to form SbO6 octahedra that share corners with two equivalent Ge(1)O4 tetrahedra and corners with two equivalent Ge(2)O4 tetrahedra. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Na(1), one Mg(1), one Sb(1), and one Sb(2) atom. In the second O site, O(2) is bonded to one Na(2), one Mg(1), one Sb(1), and one Sb(2) atom to form distorted edge-sharing ONaMgSb2 trigonal pyramids. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Na(1), one Mg(1), one Ge(1), and one Sb(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(2), one Ge(1), and one Sb(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Na(2), one Mg(1), one Ge(2), and one Sb(1) atom. In the sixth O site, O(6) is bonded to one Na(1), one Na(2), one Ge(2), and one Sb(2) atom to form distorted edge-sharing ONa2GeSb tetrahedra. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one Na(1), one Mg(1), and one Ge(2) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Na(1), one Ge(2), and one Sb(2) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Ge(1), and one Sb(1) atom. In the tenth O site, O(10) is bonded in a distorted T-shaped geometry to one Na(2), one Ge(1), and one Sb(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2MgGe2(SbO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.327
_cell_length_b   5.722
_cell_length_c   7.237
_cell_angle_alpha   110.824
_cell_angle_beta   107.218
_cell_angle_gamma   89.292
_symmetry_Int_Tables_number   1
_cell_volume   232.622
_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
  Na  Na0  1  0.423  0.869  0.723  1.0
  Na  Na1  1  0.591  0.210  0.203  1.0
  Mg  Mg2  1  0.100  0.442  0.551  1.0
  Ge  Ge3  1  0.286  0.609  0.208  1.0
  Ge  Ge4  1  0.691  0.404  0.782  1.0
  Sb  Sb5  1  0.853  0.882  0.421  1.0
  Sb  Sb6  1  0.005  0.006  0.998  1.0
  O  O7  1  0.015  0.831  0.705  1.0
  O  O8  1  0.988  0.144  0.282  1.0
  O  O9  1  0.129  0.670  0.386  1.0
  O  O10  1  0.280  0.833  0.087  1.0
  O  O11  1  0.844  0.292  0.604  1.0
  O  O12  1  0.726  0.177  0.910  1.0
  O  O13  1  0.409  0.407  0.679  1.0
  O  O14  1  0.799  0.714  0.968  1.0
  O  O15  1  0.559  0.629  0.372  1.0
  O  O16  1  0.220  0.288  0.029  1.0
[/CIF]
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The compound described by Na2MgGe2(SbO5)2 crystallizes in the triclinic P1 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one O(1), one O(3), one O(6), one O(7), one O(8), and one O(9) atom. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(10), one O(2), one O(4), one O(5), one O(6), and one O(9) atom. Mg(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), one O(5), and one O(7) atom. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(10), one O(3), one O(4), and one O(9) atom to form GeO4 tetrahedra that share corners with two equivalent Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-56°. In the second Ge site, Ge(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form GeO4 tetrahedra that share corners with two equivalent Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-52°. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), one O(5), and one O(9) atom. In the second Sb site, Sb(2) is bonded to one O(1), one O(10), one O(2), one O(4), one O(6), and one O(8) atom to form SbO6 octahedra that share corners with two equivalent Ge(1)O4 tetrahedra and corners with two equivalent Ge(2)O4 tetrahedra. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Na(1), one Mg(1), one Sb(1), and one Sb(2) atom. In the second O site, O(2) is bonded to one Na(2), one Mg(1), one Sb(1), and one Sb(2) atom to form distorted edge-sharing ONaMgSb2 trigonal pyramids. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Na(1), one Mg(1), one Ge(1), and one Sb(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(2), one Ge(1), and one Sb(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Na(2), one Mg(1), one Ge(2), and one Sb(1) atom. In the sixth O site, O(6) is bonded to one Na(1), one Na(2), one Ge(2), and one Sb(2) atom to form distorted edge-sharing ONa2GeSb tetrahedra. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one Na(1), one Mg(1), and one Ge(2) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Na(1), one Ge(2), and one Sb(2) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Ge(1), and one Sb(1) atom. In the tenth O site, O(10) is bonded in a distorted T-shaped geometry to one Na(2), one Ge(1), and one Sb(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2MgGe2(SbO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.327
_cell_length_b   5.722
_cell_length_c   7.237
_cell_angle_alpha   110.824
_cell_angle_beta   107.218
_cell_angle_gamma   89.292
_symmetry_Int_Tables_number   1
_cell_volume   232.622
_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
  Na  Na0  1  0.423  0.869  0.723  1.0
  Na  Na1  1  0.591  0.210  0.203  1.0
  Mg  Mg2  1  0.100  0.442  0.551  1.0
  Ge  Ge3  1  0.286  0.609  0.208  1.0
  Ge  Ge4  1  0.691  0.404  0.782  1.0
  Sb  Sb5  1  0.853  0.882  0.421  1.0
  Sb  Sb6  1  0.005  0.006  0.998  1.0
  O  O7  1  0.015  0.831  0.705  1.0
  O  O8  1  0.988  0.144  0.282  1.0
  O  O9  1  0.129  0.670  0.386  1.0
  O  O10  1  0.280  0.833  0.087  1.0
  O  O11  1  0.844  0.292  0.604  1.0
  O  O12  1  0.726  0.177  0.910  1.0
  O  O13  1  0.409  0.407  0.679  1.0
  O  O14  1  0.799  0.714  0.968  1.0
  O  O15  1  0.559  0.629  0.372  1.0
  O  O16  1  0.220  0.288  0.029  1.0
[/CIF]
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