The compound described by Dy2Mo4O15 crystallizes in the monoclinic P2_1/c space group. Dy(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form DyO7 pentagonal bipyramids that share corners with two equivalent Mo(2)O5 tetrahedra, corners with four equivalent Mo(1)O4 tetrahedra, and  an edgeedge with one Mo(2)O5 tetrahedra. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(2), one O(3), one O(5), and one O(8) atom to form MoO4 tetrahedra that share corners with four equivalent Dy(1)O7 pentagonal bipyramids and  a cornercorner with one Mo(2)O5 tetrahedra. In the second Mo site, Mo(2) is bonded to one O(1), one O(4), one O(6), one O(7), and one O(8) atom to form distorted MoO5 tetrahedra that share corners with two equivalent Dy(1)O7 pentagonal bipyramids,  a cornercorner with one Mo(1)O4 tetrahedra,  a cornercorner with one Mo(2)O5 tetrahedra, and  an edgeedge with one Dy(1)O7 pentagonal bipyramid. There are eight inequivalent O sites. In the first O site, O(7) is bonded in a distorted linear geometry to one Dy(1) and one Mo(2) atom. In the second O site, O(8) is bonded in a 3-coordinate geometry to one Dy(1), one Mo(1), and one Mo(2) atom. In the third O site, O(1) is bonded in a bent 150 degrees geometry to one Dy(1) and one Mo(2) atom. In the fourth O site, O(2) is bonded in a linear geometry to one Dy(1) and one Mo(1) atom. In the fifth O site, O(3) is bonded in a bent 150 degrees geometry to one Dy(1) and one Mo(1) atom. In the sixth O site, O(4) is bonded in a linear geometry to two equivalent Mo(2) atoms. In the seventh O site, O(5) is bonded in a bent 150 degrees geometry to one Dy(1) and one Mo(1) atom. In the eighth O site, O(6) is bonded in a bent 120 degrees geometry to one Dy(1) and one Mo(2) atom. is represented by the CIF file [CIF]
data_Dy2Mo4O15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.590
_cell_length_b   6.800
_cell_length_c   10.569
_cell_angle_alpha   74.634
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   664.564
_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
  Dy  Dy0  1  0.523  0.712  0.224  1.0
  Dy  Dy1  1  0.477  0.288  0.776  1.0
  Dy  Dy2  1  0.023  0.288  0.276  1.0
  Dy  Dy3  1  0.977  0.712  0.724  1.0
  Mo  Mo4  1  0.744  0.418  0.011  1.0
  Mo  Mo5  1  0.256  0.582  0.989  1.0
  Mo  Mo6  1  0.244  0.582  0.489  1.0
  Mo  Mo7  1  0.756  0.418  0.511  1.0
  Mo  Mo8  1  0.905  0.880  0.156  1.0
  Mo  Mo9  1  0.095  0.120  0.844  1.0
  Mo  Mo10  1  0.405  0.120  0.344  1.0
  Mo  Mo11  1  0.595  0.880  0.656  1.0
  O  O12  1  0.723  0.888  0.148  1.0
  O  O13  1  0.277  0.112  0.852  1.0
  O  O14  1  0.223  0.112  0.352  1.0
  O  O15  1  0.777  0.888  0.648  1.0
  O  O16  1  0.627  0.522  0.103  1.0
  O  O17  1  0.373  0.478  0.897  1.0
  O  O18  1  0.127  0.478  0.397  1.0
  O  O19  1  0.873  0.522  0.603  1.0
  O  O20  1  0.347  0.720  0.081  1.0
  O  O21  1  0.653  0.280  0.919  1.0
  O  O22  1  0.847  0.280  0.419  1.0
  O  O23  1  0.153  0.720  0.581  1.0
  O  O24  1  0.000  0.000  0.000  1.0
  O  O25  1  0.500  0.000  0.500  1.0
  O  O26  1  0.667  0.618  0.401  1.0
  O  O27  1  0.333  0.382  0.599  1.0
  O  O28  1  0.167  0.382  0.099  1.0
  O  O29  1  0.833  0.618  0.901  1.0
  O  O30  1  0.972  0.946  0.293  1.0
  O  O31  1  0.028  0.054  0.707  1.0
  O  O32  1  0.472  0.054  0.207  1.0
  O  O33  1  0.528  0.946  0.793  1.0
  O  O34  1  0.944  0.623  0.182  1.0
  O  O35  1  0.056  0.377  0.818  1.0
  O  O36  1  0.444  0.377  0.318  1.0
  O  O37  1  0.556  0.623  0.682  1.0
  O  O38  1  0.865  0.254  0.117  1.0
  O  O39  1  0.135  0.746  0.883  1.0
  O  O40  1  0.365  0.746  0.383  1.0
  O  O41  1  0.635  0.254  0.617  1.0
[/CIF]
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The compound described by Dy2Mo4O15 crystallizes in the monoclinic P2_1/c space group. Dy(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form DyO7 pentagonal bipyramids that share corners with two equivalent Mo(2)O5 tetrahedra, corners with four equivalent Mo(1)O4 tetrahedra, and  an edgeedge with one Mo(2)O5 tetrahedra. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(2), one O(3), one O(5), and one O(8) atom to form MoO4 tetrahedra that share corners with four equivalent Dy(1)O7 pentagonal bipyramids and  a cornercorner with one Mo(2)O5 tetrahedra. In the second Mo site, Mo(2) is bonded to one O(1), one O(4), one O(6), one O(7), and one O(8) atom to form distorted MoO5 tetrahedra that share corners with two equivalent Dy(1)O7 pentagonal bipyramids,  a cornercorner with one Mo(1)O4 tetrahedra,  a cornercorner with one Mo(2)O5 tetrahedra, and  an edgeedge with one Dy(1)O7 pentagonal bipyramid. There are eight inequivalent O sites. In the first O site, O(7) is bonded in a distorted linear geometry to one Dy(1) and one Mo(2) atom. In the second O site, O(8) is bonded in a 3-coordinate geometry to one Dy(1), one Mo(1), and one Mo(2) atom. In the third O site, O(1) is bonded in a bent 150 degrees geometry to one Dy(1) and one Mo(2) atom. In the fourth O site, O(2) is bonded in a linear geometry to one Dy(1) and one Mo(1) atom. In the fifth O site, O(3) is bonded in a bent 150 degrees geometry to one Dy(1) and one Mo(1) atom. In the sixth O site, O(4) is bonded in a linear geometry to two equivalent Mo(2) atoms. In the seventh O site, O(5) is bonded in a bent 150 degrees geometry to one Dy(1) and one Mo(1) atom. In the eighth O site, O(6) is bonded in a bent 120 degrees geometry to one Dy(1) and one Mo(2) atom. is represented by the CIF file [CIF]
data_Dy2Mo4O15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.590
_cell_length_b   6.800
_cell_length_c   10.569
_cell_angle_alpha   74.634
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   664.564
_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
  Dy  Dy0  1  0.523  0.712  0.224  1.0
  Dy  Dy1  1  0.477  0.288  0.776  1.0
  Dy  Dy2  1  0.023  0.288  0.276  1.0
  Dy  Dy3  1  0.977  0.712  0.724  1.0
  Mo  Mo4  1  0.744  0.418  0.011  1.0
  Mo  Mo5  1  0.256  0.582  0.989  1.0
  Mo  Mo6  1  0.244  0.582  0.489  1.0
  Mo  Mo7  1  0.756  0.418  0.511  1.0
  Mo  Mo8  1  0.905  0.880  0.156  1.0
  Mo  Mo9  1  0.095  0.120  0.844  1.0
  Mo  Mo10  1  0.405  0.120  0.344  1.0
  Mo  Mo11  1  0.595  0.880  0.656  1.0
  O  O12  1  0.723  0.888  0.148  1.0
  O  O13  1  0.277  0.112  0.852  1.0
  O  O14  1  0.223  0.112  0.352  1.0
  O  O15  1  0.777  0.888  0.648  1.0
  O  O16  1  0.627  0.522  0.103  1.0
  O  O17  1  0.373  0.478  0.897  1.0
  O  O18  1  0.127  0.478  0.397  1.0
  O  O19  1  0.873  0.522  0.603  1.0
  O  O20  1  0.347  0.720  0.081  1.0
  O  O21  1  0.653  0.280  0.919  1.0
  O  O22  1  0.847  0.280  0.419  1.0
  O  O23  1  0.153  0.720  0.581  1.0
  O  O24  1  0.000  0.000  0.000  1.0
  O  O25  1  0.500  0.000  0.500  1.0
  O  O26  1  0.667  0.618  0.401  1.0
  O  O27  1  0.333  0.382  0.599  1.0
  O  O28  1  0.167  0.382  0.099  1.0
  O  O29  1  0.833  0.618  0.901  1.0
  O  O30  1  0.972  0.946  0.293  1.0
  O  O31  1  0.028  0.054  0.707  1.0
  O  O32  1  0.472  0.054  0.207  1.0
  O  O33  1  0.528  0.946  0.793  1.0
  O  O34  1  0.944  0.623  0.182  1.0
  O  O35  1  0.056  0.377  0.818  1.0
  O  O36  1  0.444  0.377  0.318  1.0
  O  O37  1  0.556  0.623  0.682  1.0
  O  O38  1  0.865  0.254  0.117  1.0
  O  O39  1  0.135  0.746  0.883  1.0
  O  O40  1  0.365  0.746  0.383  1.0
  O  O41  1  0.635  0.254  0.617  1.0
[/CIF]
.