The compound described by MgV3SnO8 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(6), one O(7), one O(8), and two equivalent O(3) atoms to form MgO5 trigonal bipyramids that share corners with two equivalent Mg(1)O5 trigonal bipyramids, edges with two equivalent V(1)O6 octahedra, and edges with two equivalent V(3)O6 octahedra. There are three inequivalent V sites. In the first V site, V(1) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(8) atoms to form VO6 octahedra that share  a cornercorner with one V(3)O6 octahedra, corners with two equivalent V(1)O6 octahedra,  an edgeedge with one V(3)O6 octahedra, and edges with two equivalent Mg(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 7-27°. In the second V site, V(2) is bonded in a 6-coordinate geometry to one O(4), one O(5), one O(6), one O(7), and two equivalent O(1) atoms. In the third V site, V(3) is bonded to one O(1), one O(2), one O(3), one O(4), and two equivalent O(7) atoms to form VO6 octahedra that share  a cornercorner with one V(1)O6 octahedra, corners with two equivalent V(3)O6 octahedra,  an edgeedge with one V(1)O6 octahedra, and edges with two equivalent Mg(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 7-24°. Sn(1) is bonded in a 6-coordinate geometry to one O(5), one O(6), one O(7), one O(8), and two equivalent O(2) atoms. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one V(3) and two equivalent V(2) atoms. In the second O site, O(2) is bonded to one V(1), one V(3), and two equivalent Sn(1) atoms to form OV2Sn2 trigonal pyramids that share corners with two equivalent O(2)V2Sn2 trigonal pyramids, edges with two equivalent O(7)MgV3Sn trigonal bipyramids, and edges with two equivalent O(8)MgV2Sn trigonal pyramids. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to two equivalent Mg(1), one V(1), and one V(3) atom. In the fourth O site, O(4) is bonded in a T-shaped geometry to one V(1), one V(2), and one V(3) atom. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one V(1), one V(2), and one Sn(1) atom. In the sixth O site, O(6) is bonded in a T-shaped geometry to one Mg(1), one V(2), and one Sn(1) atom. In the seventh O site, O(7) is bonded to one Mg(1), one V(2), two equivalent V(3), and one Sn(1) atom to form distorted OMgV3Sn trigonal bipyramids that share corners with two equivalent O(7)MgV3Sn trigonal bipyramids, corners with two equivalent O(8)MgV2Sn trigonal pyramids, and edges with two equivalent O(2)V2Sn2 trigonal pyramids. In the eighth O site, O(8) is bonded to one Mg(1), two equivalent V(1), and one Sn(1) atom to form OMgV2Sn trigonal pyramids that share corners with two equivalent O(7)MgV3Sn trigonal bipyramids, corners with two equivalent O(8)MgV2Sn trigonal pyramids, and edges with two equivalent O(2)V2Sn2 trigonal pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgV3SnO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.682
_cell_length_b   6.697
_cell_length_c   6.834
_cell_angle_alpha   73.124
_cell_angle_beta   106.889
_cell_angle_gamma   145.162
_symmetry_Int_Tables_number   1
_cell_volume   166.412
_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
  Mg  Mg0  1  0.787  0.156  0.990  1.0
  V  V1  1  0.368  0.582  0.330  1.0
  V  V2  1  0.640  0.449  0.693  1.0
  V  V3  1  0.272  0.683  0.692  1.0
  Sn  Sn4  1  0.662  0.289  0.293  1.0
  O  O5  1  0.101  0.846  0.689  1.0
  O  O6  1  0.209  0.743  0.368  1.0
  O  O7  1  0.324  0.622  0.996  1.0
  O  O8  1  0.434  0.554  0.637  1.0
  O  O9  1  0.532  0.426  0.385  1.0
  O  O10  1  0.625  0.319  0.988  1.0
  O  O11  1  0.737  0.218  0.673  1.0
  O  O12  1  0.830  0.122  0.295  1.0
[/CIF]
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The compound described by MgV3SnO8 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(6), one O(7), one O(8), and two equivalent O(3) atoms to form MgO5 trigonal bipyramids that share corners with two equivalent Mg(1)O5 trigonal bipyramids, edges with two equivalent V(1)O6 octahedra, and edges with two equivalent V(3)O6 octahedra. There are three inequivalent V sites. In the first V site, V(1) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(8) atoms to form VO6 octahedra that share  a cornercorner with one V(3)O6 octahedra, corners with two equivalent V(1)O6 octahedra,  an edgeedge with one V(3)O6 octahedra, and edges with two equivalent Mg(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 7-27°. In the second V site, V(2) is bonded in a 6-coordinate geometry to one O(4), one O(5), one O(6), one O(7), and two equivalent O(1) atoms. In the third V site, V(3) is bonded to one O(1), one O(2), one O(3), one O(4), and two equivalent O(7) atoms to form VO6 octahedra that share  a cornercorner with one V(1)O6 octahedra, corners with two equivalent V(3)O6 octahedra,  an edgeedge with one V(1)O6 octahedra, and edges with two equivalent Mg(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 7-24°. Sn(1) is bonded in a 6-coordinate geometry to one O(5), one O(6), one O(7), one O(8), and two equivalent O(2) atoms. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one V(3) and two equivalent V(2) atoms. In the second O site, O(2) is bonded to one V(1), one V(3), and two equivalent Sn(1) atoms to form OV2Sn2 trigonal pyramids that share corners with two equivalent O(2)V2Sn2 trigonal pyramids, edges with two equivalent O(7)MgV3Sn trigonal bipyramids, and edges with two equivalent O(8)MgV2Sn trigonal pyramids. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to two equivalent Mg(1), one V(1), and one V(3) atom. In the fourth O site, O(4) is bonded in a T-shaped geometry to one V(1), one V(2), and one V(3) atom. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one V(1), one V(2), and one Sn(1) atom. In the sixth O site, O(6) is bonded in a T-shaped geometry to one Mg(1), one V(2), and one Sn(1) atom. In the seventh O site, O(7) is bonded to one Mg(1), one V(2), two equivalent V(3), and one Sn(1) atom to form distorted OMgV3Sn trigonal bipyramids that share corners with two equivalent O(7)MgV3Sn trigonal bipyramids, corners with two equivalent O(8)MgV2Sn trigonal pyramids, and edges with two equivalent O(2)V2Sn2 trigonal pyramids. In the eighth O site, O(8) is bonded to one Mg(1), two equivalent V(1), and one Sn(1) atom to form OMgV2Sn trigonal pyramids that share corners with two equivalent O(7)MgV3Sn trigonal bipyramids, corners with two equivalent O(8)MgV2Sn trigonal pyramids, and edges with two equivalent O(2)V2Sn2 trigonal pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgV3SnO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.682
_cell_length_b   6.697
_cell_length_c   6.834
_cell_angle_alpha   73.124
_cell_angle_beta   106.889
_cell_angle_gamma   145.162
_symmetry_Int_Tables_number   1
_cell_volume   166.412
_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
  Mg  Mg0  1  0.787  0.156  0.990  1.0
  V  V1  1  0.368  0.582  0.330  1.0
  V  V2  1  0.640  0.449  0.693  1.0
  V  V3  1  0.272  0.683  0.692  1.0
  Sn  Sn4  1  0.662  0.289  0.293  1.0
  O  O5  1  0.101  0.846  0.689  1.0
  O  O6  1  0.209  0.743  0.368  1.0
  O  O7  1  0.324  0.622  0.996  1.0
  O  O8  1  0.434  0.554  0.637  1.0
  O  O9  1  0.532  0.426  0.385  1.0
  O  O10  1  0.625  0.319  0.988  1.0
  O  O11  1  0.737  0.218  0.673  1.0
  O  O12  1  0.830  0.122  0.295  1.0
[/CIF]
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