The compound described by MgHo(WO3)2 crystallizes in the monoclinic Pm space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a distorted rectangular see-saw-like geometry to one O(5), one O(8), and two equivalent O(3) atoms. In the second Mg site, Mg(2) is bonded in a rectangular see-saw-like geometry to one O(1), one O(4), and two equivalent O(7) atoms. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 8-coordinate geometry to one O(5), one O(8), two equivalent O(2), two equivalent O(3), and two equivalent O(7) atoms. In the second Ho site, Ho(2) is bonded in a 8-coordinate geometry to one O(1), one O(4), two equivalent O(3), two equivalent O(6), and two equivalent O(7) atoms. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(2), one O(3), one O(6), one O(7), and one O(8) atom to form corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 42-48°. In the second W site, W(2) is bonded to one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 42-47°. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Mg(2), one Ho(2), and two equivalent W(1) atoms to form distorted corner-sharing OHoMgW2 trigonal pyramids. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Ho(1), one W(1), and one W(2) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Mg(1), one Ho(1), one Ho(2), one W(1), and one W(2) atom. In the fourth O site, O(4) is bonded to one Mg(2), one Ho(2), and two equivalent W(2) atoms to form distorted corner-sharing OHoMgW2 trigonal pyramids. In the fifth O site, O(5) is bonded to one Mg(1), one Ho(1), and two equivalent W(2) atoms to form distorted corner-sharing OHoMgW2 trigonal pyramids. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Ho(2), one W(1), and one W(2) atom. In the seventh O site, O(7) is bonded in a 5-coordinate geometry to one Mg(2), one Ho(1), one Ho(2), one W(1), and one W(2) atom. In the eighth O site, O(8) is bonded to one Mg(1), one Ho(1), and two equivalent W(1) atoms to form distorted corner-sharing OHoMgW2 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_HoMg(WO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.008
_cell_length_b   5.439
_cell_length_c   5.650
_cell_angle_alpha   89.069
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   246.055
_cell_formula_units_Z   2
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  0.000  0.993  0.942  1.0
  Ho  Ho1  1  0.500  0.491  0.554  1.0
  Mg  Mg2  1  0.000  0.502  0.465  1.0
  Mg  Mg3  1  0.500  0.000  0.037  1.0
  W  W4  1  0.250  1.000  0.496  1.0
  W  W5  1  0.750  1.000  0.496  1.0
  W  W6  1  0.750  0.500  0.005  1.0
  W  W7  1  0.250  0.500  0.005  1.0
  O  O8  1  0.500  0.872  0.403  1.0
  O  O9  1  0.179  0.808  0.183  1.0
  O  O10  1  0.821  0.808  0.183  1.0
  O  O11  1  0.178  0.667  0.689  1.0
  O  O12  1  0.822  0.667  0.689  1.0
  O  O13  1  0.500  0.642  0.930  1.0
  O  O14  1  0.000  0.370  0.088  1.0
  O  O15  1  0.682  0.330  0.311  1.0
  O  O16  1  0.318  0.330  0.311  1.0
  O  O17  1  0.324  0.188  0.822  1.0
  O  O18  1  0.676  0.188  0.822  1.0
  O  O19  1  0.000  0.142  0.571  1.0
[/CIF]
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The compound described by MgHo(WO3)2 crystallizes in the monoclinic Pm space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a distorted rectangular see-saw-like geometry to one O(5), one O(8), and two equivalent O(3) atoms. In the second Mg site, Mg(2) is bonded in a rectangular see-saw-like geometry to one O(1), one O(4), and two equivalent O(7) atoms. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 8-coordinate geometry to one O(5), one O(8), two equivalent O(2), two equivalent O(3), and two equivalent O(7) atoms. In the second Ho site, Ho(2) is bonded in a 8-coordinate geometry to one O(1), one O(4), two equivalent O(3), two equivalent O(6), and two equivalent O(7) atoms. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(2), one O(3), one O(6), one O(7), and one O(8) atom to form corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 42-48°. In the second W site, W(2) is bonded to one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 42-47°. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Mg(2), one Ho(2), and two equivalent W(1) atoms to form distorted corner-sharing OHoMgW2 trigonal pyramids. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Ho(1), one W(1), and one W(2) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Mg(1), one Ho(1), one Ho(2), one W(1), and one W(2) atom. In the fourth O site, O(4) is bonded to one Mg(2), one Ho(2), and two equivalent W(2) atoms to form distorted corner-sharing OHoMgW2 trigonal pyramids. In the fifth O site, O(5) is bonded to one Mg(1), one Ho(1), and two equivalent W(2) atoms to form distorted corner-sharing OHoMgW2 trigonal pyramids. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Ho(2), one W(1), and one W(2) atom. In the seventh O site, O(7) is bonded in a 5-coordinate geometry to one Mg(2), one Ho(1), one Ho(2), one W(1), and one W(2) atom. In the eighth O site, O(8) is bonded to one Mg(1), one Ho(1), and two equivalent W(1) atoms to form distorted corner-sharing OHoMgW2 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_HoMg(WO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.008
_cell_length_b   5.439
_cell_length_c   5.650
_cell_angle_alpha   89.069
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   246.055
_cell_formula_units_Z   2
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  0.000  0.993  0.942  1.0
  Ho  Ho1  1  0.500  0.491  0.554  1.0
  Mg  Mg2  1  0.000  0.502  0.465  1.0
  Mg  Mg3  1  0.500  0.000  0.037  1.0
  W  W4  1  0.250  1.000  0.496  1.0
  W  W5  1  0.750  1.000  0.496  1.0
  W  W6  1  0.750  0.500  0.005  1.0
  W  W7  1  0.250  0.500  0.005  1.0
  O  O8  1  0.500  0.872  0.403  1.0
  O  O9  1  0.179  0.808  0.183  1.0
  O  O10  1  0.821  0.808  0.183  1.0
  O  O11  1  0.178  0.667  0.689  1.0
  O  O12  1  0.822  0.667  0.689  1.0
  O  O13  1  0.500  0.642  0.930  1.0
  O  O14  1  0.000  0.370  0.088  1.0
  O  O15  1  0.682  0.330  0.311  1.0
  O  O16  1  0.318  0.330  0.311  1.0
  O  O17  1  0.324  0.188  0.822  1.0
  O  O18  1  0.676  0.188  0.822  1.0
  O  O19  1  0.000  0.142  0.571  1.0
[/CIF]
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