The crystal structure described by MgV4O5F7 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(3), one F(2), one F(4), one F(5), and one F(6) atom to form distorted MgO2F4 pentagonal pyramids that share corners with two equivalent V(3)O2F4 octahedra,  an edgeedge with one V(1)O2F4 octahedra, and edges with two equivalent V(4)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 58-66°. There are four inequivalent V sites. In the first V site, V(1) is bonded to one O(3), one O(4), one F(1), one F(3), one F(4), and one F(7) atom to form VO2F4 octahedra that share corners with four equivalent V(3)O2F4 octahedra and  an edgeedge with one Mg(1)O2F4 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 31-39°. In the second V site, V(2) is bonded in a 6-coordinate geometry to one O(2), one O(3), one O(4), one F(2), one F(5), and one F(6) atom. In the third V site, V(3) is bonded to one O(1), one O(5), one F(1), one F(3), one F(4), and one F(7) atom to form VO2F4 octahedra that share corners with two equivalent V(4)O3F3 octahedra, corners with four equivalent V(1)O2F4 octahedra, and corners with two equivalent Mg(1)O2F4 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 24-40°. In the fourth V site, V(4) is bonded to one O(1), one O(2), one O(5), one F(2), one F(5), and one F(6) atom to form VO3F3 octahedra that share corners with two equivalent V(3)O2F4 octahedra and edges with two equivalent Mg(1)O2F4 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 24-40°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(3), and one V(4) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one V(2) and one V(4) atom. In the third O site, O(3) is bonded in a T-shaped geometry to one Mg(1), one V(1), and one V(2) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one V(1) and one V(2) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one V(3) and one V(4) atom. There are seven inequivalent F sites. In the first F site, F(1) is bonded in a bent 150 degrees geometry to one V(1) and one V(3) atom. In the second F site, F(2) is bonded in a T-shaped geometry to one Mg(1), one V(2), and one V(4) atom. In the third F site, F(3) is bonded in a bent 150 degrees geometry to one V(1) and one V(3) atom. In the fourth F site, F(4) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(1), and one V(3) atom. In the fifth F site, F(5) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(2), and one V(4) atom. In the sixth F site, F(6) is bonded in a 3-coordinate geometry to one Mg(1), one V(2), and one V(4) atom. In the seventh F site, F(7) is bonded in a bent 150 degrees geometry to one V(1) and one V(3) atom. is represented by the CIF card [CIF]
data_MgV4O5F7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.331
_cell_length_b   7.174
_cell_length_c   5.633
_cell_angle_alpha   93.712
_cell_angle_beta   88.813
_cell_angle_gamma   89.743
_symmetry_Int_Tables_number   1
_cell_volume   214.941
_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  0.515  0.211  0.106  1.0
  V  V1  1  0.488  0.513  0.509  1.0
  V  V2  1  0.558  0.996  0.524  1.0
  V  V3  1  0.983  0.497  0.994  1.0
  V  V4  1  0.012  0.994  0.983  1.0
  O  O5  1  0.877  0.239  0.002  1.0
  O  O6  1  0.814  0.957  0.682  1.0
  O  O7  1  0.566  0.255  0.466  1.0
  O  O8  1  0.412  0.750  0.503  1.0
  O  O9  1  0.069  0.757  0.986  1.0
  F  F10  1  0.797  0.552  0.304  1.0
  F  F11  1  0.689  0.954  0.188  1.0
  F  F12  1  0.665  0.539  0.809  1.0
  F  F13  1  0.311  0.444  0.175  1.0
  F  F14  1  0.337  0.076  0.817  1.0
  F  F15  1  0.226  0.061  0.258  1.0
  F  F16  1  0.181  0.448  0.692  1.0
[/CIF]
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The crystal structure described by MgV4O5F7 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(3), one F(2), one F(4), one F(5), and one F(6) atom to form distorted MgO2F4 pentagonal pyramids that share corners with two equivalent V(3)O2F4 octahedra,  an edgeedge with one V(1)O2F4 octahedra, and edges with two equivalent V(4)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 58-66°. There are four inequivalent V sites. In the first V site, V(1) is bonded to one O(3), one O(4), one F(1), one F(3), one F(4), and one F(7) atom to form VO2F4 octahedra that share corners with four equivalent V(3)O2F4 octahedra and  an edgeedge with one Mg(1)O2F4 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 31-39°. In the second V site, V(2) is bonded in a 6-coordinate geometry to one O(2), one O(3), one O(4), one F(2), one F(5), and one F(6) atom. In the third V site, V(3) is bonded to one O(1), one O(5), one F(1), one F(3), one F(4), and one F(7) atom to form VO2F4 octahedra that share corners with two equivalent V(4)O3F3 octahedra, corners with four equivalent V(1)O2F4 octahedra, and corners with two equivalent Mg(1)O2F4 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 24-40°. In the fourth V site, V(4) is bonded to one O(1), one O(2), one O(5), one F(2), one F(5), and one F(6) atom to form VO3F3 octahedra that share corners with two equivalent V(3)O2F4 octahedra and edges with two equivalent Mg(1)O2F4 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 24-40°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(3), and one V(4) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one V(2) and one V(4) atom. In the third O site, O(3) is bonded in a T-shaped geometry to one Mg(1), one V(1), and one V(2) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one V(1) and one V(2) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one V(3) and one V(4) atom. There are seven inequivalent F sites. In the first F site, F(1) is bonded in a bent 150 degrees geometry to one V(1) and one V(3) atom. In the second F site, F(2) is bonded in a T-shaped geometry to one Mg(1), one V(2), and one V(4) atom. In the third F site, F(3) is bonded in a bent 150 degrees geometry to one V(1) and one V(3) atom. In the fourth F site, F(4) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(1), and one V(3) atom. In the fifth F site, F(5) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(2), and one V(4) atom. In the sixth F site, F(6) is bonded in a 3-coordinate geometry to one Mg(1), one V(2), and one V(4) atom. In the seventh F site, F(7) is bonded in a bent 150 degrees geometry to one V(1) and one V(3) atom. is represented by the CIF card [CIF]
data_MgV4O5F7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.331
_cell_length_b   7.174
_cell_length_c   5.633
_cell_angle_alpha   93.712
_cell_angle_beta   88.813
_cell_angle_gamma   89.743
_symmetry_Int_Tables_number   1
_cell_volume   214.941
_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  0.515  0.211  0.106  1.0
  V  V1  1  0.488  0.513  0.509  1.0
  V  V2  1  0.558  0.996  0.524  1.0
  V  V3  1  0.983  0.497  0.994  1.0
  V  V4  1  0.012  0.994  0.983  1.0
  O  O5  1  0.877  0.239  0.002  1.0
  O  O6  1  0.814  0.957  0.682  1.0
  O  O7  1  0.566  0.255  0.466  1.0
  O  O8  1  0.412  0.750  0.503  1.0
  O  O9  1  0.069  0.757  0.986  1.0
  F  F10  1  0.797  0.552  0.304  1.0
  F  F11  1  0.689  0.954  0.188  1.0
  F  F12  1  0.665  0.539  0.809  1.0
  F  F13  1  0.311  0.444  0.175  1.0
  F  F14  1  0.337  0.076  0.817  1.0
  F  F15  1  0.226  0.061  0.258  1.0
  F  F16  1  0.181  0.448  0.692  1.0
[/CIF]
.