The compound described by MgHo2V2O8 crystallizes in the monoclinic C2 space group. Mg(1) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form distorted MgO4 tetrahedra that share corners with two equivalent V(1)O4 tetrahedra and  an edgeedge with one V(2)O4 trigonal pyramid. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. In the second Ho site, Ho(2) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. There are two inequivalent V sites. In the first V site, V(1) is bonded to two equivalent O(1) and two equivalent O(4) atoms to form VO4 tetrahedra that share corners with two equivalent Mg(1)O4 tetrahedra. In the second V site, V(2) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form distorted VO4 trigonal pyramids that share  an edgeedge with one Mg(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Mg(1), one Ho(1), one Ho(2), and one V(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Ho(1), one Ho(2), and one V(2) atom. In the third O site, O(3) is bonded in a distorted see-saw-like geometry to one Mg(1), one Ho(1), one Ho(2), and one V(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Ho(1), one Ho(2), and one V(1) atom. is represented by the CIF file [CIF]
data_Ho2MgV2O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.059
_cell_length_b   6.059
_cell_length_c   6.198
_cell_angle_alpha   106.066
_cell_angle_beta   106.066
_cell_angle_gamma   115.565
_symmetry_Int_Tables_number   1
_cell_volume   175.436
_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
  Ho  Ho0  1  0.847  0.153  0.250  1.0
  Ho  Ho1  1  0.129  0.871  0.750  1.0
  Mg  Mg2  1  0.140  0.860  0.250  1.0
  V  V3  1  0.622  0.378  0.750  1.0
  V  V4  1  0.405  0.595  0.250  1.0
  O  O5  1  0.253  0.185  0.540  1.0
  O  O6  1  0.188  0.233  0.068  1.0
  O  O7  1  0.189  0.635  0.413  1.0
  O  O8  1  0.607  0.192  0.934  1.0
  O  O9  1  0.767  0.812  0.432  1.0
  O  O10  1  0.815  0.747  0.960  1.0
  O  O11  1  0.808  0.393  0.566  1.0
  O  O12  1  0.365  0.811  0.087  1.0
[/CIF]
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The compound described by MgHo2V2O8 crystallizes in the monoclinic C2 space group. Mg(1) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form distorted MgO4 tetrahedra that share corners with two equivalent V(1)O4 tetrahedra and  an edgeedge with one V(2)O4 trigonal pyramid. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. In the second Ho site, Ho(2) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. There are two inequivalent V sites. In the first V site, V(1) is bonded to two equivalent O(1) and two equivalent O(4) atoms to form VO4 tetrahedra that share corners with two equivalent Mg(1)O4 tetrahedra. In the second V site, V(2) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form distorted VO4 trigonal pyramids that share  an edgeedge with one Mg(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Mg(1), one Ho(1), one Ho(2), and one V(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Ho(1), one Ho(2), and one V(2) atom. In the third O site, O(3) is bonded in a distorted see-saw-like geometry to one Mg(1), one Ho(1), one Ho(2), and one V(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Ho(1), one Ho(2), and one V(1) atom. is represented by the CIF file [CIF]
data_Ho2MgV2O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.059
_cell_length_b   6.059
_cell_length_c   6.198
_cell_angle_alpha   106.066
_cell_angle_beta   106.066
_cell_angle_gamma   115.565
_symmetry_Int_Tables_number   1
_cell_volume   175.436
_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
  Ho  Ho0  1  0.847  0.153  0.250  1.0
  Ho  Ho1  1  0.129  0.871  0.750  1.0
  Mg  Mg2  1  0.140  0.860  0.250  1.0
  V  V3  1  0.622  0.378  0.750  1.0
  V  V4  1  0.405  0.595  0.250  1.0
  O  O5  1  0.253  0.185  0.540  1.0
  O  O6  1  0.188  0.233  0.068  1.0
  O  O7  1  0.189  0.635  0.413  1.0
  O  O8  1  0.607  0.192  0.934  1.0
  O  O9  1  0.767  0.812  0.432  1.0
  O  O10  1  0.815  0.747  0.960  1.0
  O  O11  1  0.808  0.393  0.566  1.0
  O  O12  1  0.365  0.811  0.087  1.0
[/CIF]
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