The crystal structure described by K4MgV4O10 crystallizes in the monoclinic Cm space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to one O(3), one O(4), one O(5), one O(6), two equivalent O(1), and two equivalent O(2) atoms. In the second K site, K(2) is bonded in a 5-coordinate geometry to one O(6), two equivalent O(1), and two equivalent O(2) atoms. Mg(1) is bonded in an L-shaped geometry to two equivalent O(3) atoms. There are three inequivalent V sites. In the first V site, V(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the second V site, V(2) is bonded to one O(5), one O(6), and two equivalent O(3) atoms to form distorted corner-sharing VO4 tetrahedra. In the third V site, V(3) is bonded to one O(5), one O(6), and two equivalent O(4) atoms to form distorted corner-sharing VO4 trigonal pyramids. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 1-coordinate geometry to two equivalent K(1), two equivalent K(2), and one V(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent K(1), two equivalent K(2), and one V(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one K(1), one Mg(1), one V(1), and one V(2) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one K(1), one V(1), and one V(3) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent K(1), one V(2), and one V(3) atom. In the sixth O site, O(6) is bonded in a 1-coordinate geometry to two equivalent K(1), two equivalent K(2), one V(2), and one V(3) atom. is represented by the CIF card [CIF]
data_K4MgV4O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.227
_cell_length_b   6.486
_cell_length_c   8.613
_cell_angle_alpha   113.070
_cell_angle_beta   112.224
_cell_angle_gamma   87.506
_symmetry_Int_Tables_number   1
_cell_volume   294.035
_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
  K  K0  1  0.573  0.139  0.243  1.0
  K  K1  1  0.415  0.906  0.805  1.0
  K  K2  1  0.110  0.601  0.195  1.0
  K  K3  1  0.831  0.398  0.757  1.0
  Mg  Mg4  1  0.109  0.495  0.500  1.0
  V  V5  1  0.948  0.014  0.005  1.0
  V  V6  1  0.443  0.508  0.995  1.0
  V  V7  1  0.223  0.108  0.500  1.0
  V  V8  1  0.785  0.798  0.500  1.0
  O  O9  1  0.270  0.281  0.968  1.0
  O  O10  1  0.287  0.742  0.004  1.0
  O  O11  1  0.782  0.239  0.996  1.0
  O  O12  1  0.803  0.814  0.032  1.0
  O  O13  1  0.143  0.207  0.306  1.0
  O  O14  1  0.861  0.845  0.738  1.0
  O  O15  1  0.623  0.607  0.263  1.0
  O  O16  1  0.336  0.400  0.694  1.0
  O  O17  1  0.938  0.046  0.500  1.0
  O  O18  1  0.451  0.945  0.500  1.0
[/CIF]
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The crystal structure described by K4MgV4O10 crystallizes in the monoclinic Cm space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to one O(3), one O(4), one O(5), one O(6), two equivalent O(1), and two equivalent O(2) atoms. In the second K site, K(2) is bonded in a 5-coordinate geometry to one O(6), two equivalent O(1), and two equivalent O(2) atoms. Mg(1) is bonded in an L-shaped geometry to two equivalent O(3) atoms. There are three inequivalent V sites. In the first V site, V(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the second V site, V(2) is bonded to one O(5), one O(6), and two equivalent O(3) atoms to form distorted corner-sharing VO4 tetrahedra. In the third V site, V(3) is bonded to one O(5), one O(6), and two equivalent O(4) atoms to form distorted corner-sharing VO4 trigonal pyramids. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 1-coordinate geometry to two equivalent K(1), two equivalent K(2), and one V(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent K(1), two equivalent K(2), and one V(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one K(1), one Mg(1), one V(1), and one V(2) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one K(1), one V(1), and one V(3) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent K(1), one V(2), and one V(3) atom. In the sixth O site, O(6) is bonded in a 1-coordinate geometry to two equivalent K(1), two equivalent K(2), one V(2), and one V(3) atom. is represented by the CIF card [CIF]
data_K4MgV4O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.227
_cell_length_b   6.486
_cell_length_c   8.613
_cell_angle_alpha   113.070
_cell_angle_beta   112.224
_cell_angle_gamma   87.506
_symmetry_Int_Tables_number   1
_cell_volume   294.035
_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
  K  K0  1  0.573  0.139  0.243  1.0
  K  K1  1  0.415  0.906  0.805  1.0
  K  K2  1  0.110  0.601  0.195  1.0
  K  K3  1  0.831  0.398  0.757  1.0
  Mg  Mg4  1  0.109  0.495  0.500  1.0
  V  V5  1  0.948  0.014  0.005  1.0
  V  V6  1  0.443  0.508  0.995  1.0
  V  V7  1  0.223  0.108  0.500  1.0
  V  V8  1  0.785  0.798  0.500  1.0
  O  O9  1  0.270  0.281  0.968  1.0
  O  O10  1  0.287  0.742  0.004  1.0
  O  O11  1  0.782  0.239  0.996  1.0
  O  O12  1  0.803  0.814  0.032  1.0
  O  O13  1  0.143  0.207  0.306  1.0
  O  O14  1  0.861  0.845  0.738  1.0
  O  O15  1  0.623  0.607  0.263  1.0
  O  O16  1  0.336  0.400  0.694  1.0
  O  O17  1  0.938  0.046  0.500  1.0
  O  O18  1  0.451  0.945  0.500  1.0
[/CIF]
.