The structure described by MgV6O15 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(14), one O(6), one O(9), and two equivalent O(8) atoms to form distorted corner-sharing MgO5 trigonal bipyramids. There are six inequivalent V sites. In the first V site, V(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(5), one O(9), and two equivalent O(12) atoms. In the second V site, V(2) is bonded in a 6-coordinate geometry to one O(11), one O(14), one O(15), one O(9), and two equivalent O(4) atoms. In the third V site, V(3) is bonded in a 5-coordinate geometry to one O(3), one O(5), one O(6), and two equivalent O(13) atoms. In the fourth V site, V(4) is bonded in a 6-coordinate geometry to one O(1), one O(4), one O(5), one O(7), and two equivalent O(15) atoms. In the fifth V site, V(5) is bonded in a 6-coordinate geometry to one O(11), one O(12), one O(15), one O(8), and two equivalent O(1) atoms. In the sixth V site, V(6) is bonded in a 6-coordinate geometry to one O(10), one O(11), one O(13), one O(14), and two equivalent O(3) atoms. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one V(1), one V(4), and two equivalent V(5) atoms. In the second O site, O(2) is bonded in a single-bond geometry to one V(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one V(3) and two equivalent V(6) atoms. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one V(4) and two equivalent V(2) atoms. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one V(1), one V(3), and one V(4) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one Mg(1) and one V(3) atom. In the seventh O site, O(7) is bonded in a single-bond geometry to one V(4) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to two equivalent Mg(1) and one V(5) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Mg(1), one V(1), and one V(2) atom. In the tenth O site, O(10) is bonded in a single-bond geometry to one V(6) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one V(2), one V(5), and one V(6) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal non-coplanar geometry to one V(5) and two equivalent V(1) atoms. In the thirteenth O site, O(13) is bonded in a distorted T-shaped geometry to one V(6) and two equivalent V(3) atoms. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Mg(1), one V(2), and one V(6) atom. In the fifteenth O site, O(15) is bonded to one V(2), one V(5), and two equivalent V(4) atoms to form distorted corner-sharing OV4 trigonal pyramids. is represented by the CIF file [CIF]
data_MgV6O15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.490
_cell_length_b   8.337
_cell_length_c   10.278
_cell_angle_alpha   65.103
_cell_angle_beta   113.780
_cell_angle_gamma   154.815
_symmetry_Int_Tables_number   1
_cell_volume   280.307
_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  0.093  0.118  0.730  1.0
  V  V1  1  0.149  0.914  0.098  1.0
  V  V2  1  0.893  0.149  0.895  1.0
  V  V3  1  0.254  0.674  0.426  1.0
  V  V4  1  0.342  0.657  0.127  1.0
  V  V5  1  0.705  0.373  0.899  1.0
  V  V6  1  0.703  0.280  0.589  1.0
  O  O7  1  0.218  0.848  0.952  1.0
  O  O8  1  0.130  0.905  0.254  1.0
  O  O9  1  0.226  0.749  0.567  1.0
  O  O10  1  0.375  0.632  0.959  1.0
  O  O11  1  0.272  0.724  0.239  1.0
  O  O12  1  0.311  0.512  0.525  1.0
  O  O13  1  0.420  0.538  0.255  1.0
  O  O14  1  0.641  0.530  0.766  1.0
  O  O15  1  0.058  0.046  0.962  1.0
  O  O16  1  0.616  0.409  0.517  1.0
  O  O17  1  0.747  0.278  0.779  1.0
  O  O18  1  0.671  0.387  0.072  1.0
  O  O19  1  0.741  0.226  0.430  1.0
  O  O20  1  0.836  0.094  0.729  1.0
  O  O21  1  0.823  0.190  0.068  1.0
[/CIF]
.
The structure described by MgV6O15 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(14), one O(6), one O(9), and two equivalent O(8) atoms to form distorted corner-sharing MgO5 trigonal bipyramids. There are six inequivalent V sites. In the first V site, V(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(5), one O(9), and two equivalent O(12) atoms. In the second V site, V(2) is bonded in a 6-coordinate geometry to one O(11), one O(14), one O(15), one O(9), and two equivalent O(4) atoms. In the third V site, V(3) is bonded in a 5-coordinate geometry to one O(3), one O(5), one O(6), and two equivalent O(13) atoms. In the fourth V site, V(4) is bonded in a 6-coordinate geometry to one O(1), one O(4), one O(5), one O(7), and two equivalent O(15) atoms. In the fifth V site, V(5) is bonded in a 6-coordinate geometry to one O(11), one O(12), one O(15), one O(8), and two equivalent O(1) atoms. In the sixth V site, V(6) is bonded in a 6-coordinate geometry to one O(10), one O(11), one O(13), one O(14), and two equivalent O(3) atoms. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one V(1), one V(4), and two equivalent V(5) atoms. In the second O site, O(2) is bonded in a single-bond geometry to one V(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one V(3) and two equivalent V(6) atoms. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one V(4) and two equivalent V(2) atoms. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one V(1), one V(3), and one V(4) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one Mg(1) and one V(3) atom. In the seventh O site, O(7) is bonded in a single-bond geometry to one V(4) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to two equivalent Mg(1) and one V(5) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Mg(1), one V(1), and one V(2) atom. In the tenth O site, O(10) is bonded in a single-bond geometry to one V(6) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one V(2), one V(5), and one V(6) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal non-coplanar geometry to one V(5) and two equivalent V(1) atoms. In the thirteenth O site, O(13) is bonded in a distorted T-shaped geometry to one V(6) and two equivalent V(3) atoms. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Mg(1), one V(2), and one V(6) atom. In the fifteenth O site, O(15) is bonded to one V(2), one V(5), and two equivalent V(4) atoms to form distorted corner-sharing OV4 trigonal pyramids. is represented by the CIF file [CIF]
data_MgV6O15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.490
_cell_length_b   8.337
_cell_length_c   10.278
_cell_angle_alpha   65.103
_cell_angle_beta   113.780
_cell_angle_gamma   154.815
_symmetry_Int_Tables_number   1
_cell_volume   280.307
_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  0.093  0.118  0.730  1.0
  V  V1  1  0.149  0.914  0.098  1.0
  V  V2  1  0.893  0.149  0.895  1.0
  V  V3  1  0.254  0.674  0.426  1.0
  V  V4  1  0.342  0.657  0.127  1.0
  V  V5  1  0.705  0.373  0.899  1.0
  V  V6  1  0.703  0.280  0.589  1.0
  O  O7  1  0.218  0.848  0.952  1.0
  O  O8  1  0.130  0.905  0.254  1.0
  O  O9  1  0.226  0.749  0.567  1.0
  O  O10  1  0.375  0.632  0.959  1.0
  O  O11  1  0.272  0.724  0.239  1.0
  O  O12  1  0.311  0.512  0.525  1.0
  O  O13  1  0.420  0.538  0.255  1.0
  O  O14  1  0.641  0.530  0.766  1.0
  O  O15  1  0.058  0.046  0.962  1.0
  O  O16  1  0.616  0.409  0.517  1.0
  O  O17  1  0.747  0.278  0.779  1.0
  O  O18  1  0.671  0.387  0.072  1.0
  O  O19  1  0.741  0.226  0.430  1.0
  O  O20  1  0.836  0.094  0.729  1.0
  O  O21  1  0.823  0.190  0.068  1.0
[/CIF]
.