The material described by SmMo8O14 crystallizes in the orthorhombic Aea2 space group. Sm(1) is bonded in a 7-coordinate geometry to one O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. There are four inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(1), one O(3), one O(4), one O(6), one O(7), and one O(8) atom to form MoO6 octahedra that share  a cornercorner with one Mo(1)O6 octahedra,  a cornercorner with one Mo(2)O5 square pyramid,  a cornercorner with one Mo(4)O5 square pyramid, corners with two equivalent Mo(3)O5 square pyramids,  an edgeedge with one Mo(3)O5 square pyramid,  an edgeedge with one Mo(4)O5 square pyramid, and edges with two equivalent Mo(2)O5 square pyramids. The corner-sharing octahedral tilt angles are 13°. In the second Mo site, Mo(2) is bonded to one O(1), one O(3), one O(4), one O(5), and one O(7) atom to form MoO5 square pyramids that share  a cornercorner with one Mo(1)O6 octahedra,  a cornercorner with one Mo(2)O5 square pyramid, corners with two equivalent Mo(4)O5 square pyramids, corners with three equivalent Mo(3)O5 square pyramids, and edges with two equivalent Mo(1)O6 octahedra. The corner-sharing octahedral tilt angles are 53°. In the third Mo site, Mo(3) is bonded to one O(3), one O(4), one O(5), one O(6), and one O(8) atom to form distorted MoO5 square pyramids that share corners with two equivalent Mo(1)O6 octahedra, corners with three equivalent Mo(2)O5 square pyramids, corners with three equivalent Mo(4)O5 square pyramids, and  an edgeedge with one Mo(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 19-50°. In the fourth Mo site, Mo(4) is bonded to one O(2), one O(5), one O(6), one O(7), and one O(8) atom to form MoO5 square pyramids that share  a cornercorner with one Mo(1)O6 octahedra,  a cornercorner with one Mo(4)O5 square pyramid, corners with two equivalent Mo(2)O5 square pyramids, corners with three equivalent Mo(3)O5 square pyramids, and  an edgeedge with one Mo(1)O6 octahedra. The corner-sharing octahedral tilt angles are 58°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a see-saw-like geometry to two equivalent Mo(1) and two equivalent Mo(2) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Sm(1) and two equivalent Mo(4) atoms. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Sm(1), one Mo(1), one Mo(2), and one Mo(3) atom. In the fourth O site, O(4) is bonded to one Sm(1), one Mo(1), one Mo(2), and one Mo(3) atom to form a mixture of corner and edge-sharing OSmMo3 trigonal pyramids. In the fifth O site, O(5) is bonded to one Sm(1), one Mo(2), one Mo(3), and one Mo(4) atom to form a mixture of distorted corner and edge-sharing OSmMo3 trigonal pyramids. In the sixth O site, O(6) is bonded in a T-shaped geometry to one Mo(1), one Mo(3), and one Mo(4) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Mo(1), one Mo(2), and one Mo(4) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Mo(1), one Mo(3), and one Mo(4) atom. is represented by the CIF file [CIF]
data_Sm(Mo4O7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.225
_cell_length_b   8.225
_cell_length_c   9.387
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   97.948
_symmetry_Int_Tables_number   1
_cell_volume   628.930
_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
  Sm  Sm0  1  0.956  0.044  0.500  1.0
  Sm  Sm1  1  0.456  0.544  0.000  1.0
  Mo  Mo2  1  0.463  0.881  0.370  1.0
  Mo  Mo3  1  0.119  0.537  0.630  1.0
  Mo  Mo4  1  0.963  0.381  0.130  1.0
  Mo  Mo5  1  0.619  0.037  0.870  1.0
  Mo  Mo6  1  0.338  0.491  0.357  1.0
  Mo  Mo7  1  0.509  0.662  0.643  1.0
  Mo  Mo8  1  0.838  0.991  0.143  1.0
  Mo  Mo9  1  0.009  0.162  0.857  1.0
  Mo  Mo10  1  0.742  0.632  0.373  1.0
  Mo  Mo11  1  0.241  0.897  0.854  1.0
  Mo  Mo12  1  0.242  0.132  0.127  1.0
  Mo  Mo13  1  0.868  0.758  0.873  1.0
  Mo  Mo14  1  0.603  0.259  0.354  1.0
  Mo  Mo15  1  0.741  0.397  0.646  1.0
  Mo  Mo16  1  0.103  0.759  0.146  1.0
  Mo  Mo17  1  0.368  0.258  0.627  1.0
  O  O18  1  0.312  0.688  0.500  1.0
  O  O19  1  0.812  0.188  0.000  1.0
  O  O20  1  0.784  0.216  0.500  1.0
  O  O21  1  0.284  0.716  0.000  1.0
  O  O22  1  0.667  0.814  0.497  1.0
  O  O23  1  0.186  0.333  0.503  1.0
  O  O24  1  0.167  0.314  0.003  1.0
  O  O25  1  0.686  0.833  0.997  1.0
  O  O26  1  0.520  0.663  0.252  1.0
  O  O27  1  0.337  0.480  0.748  1.0
  O  O28  1  0.020  0.163  0.248  1.0
  O  O29  1  0.837  0.980  0.752  1.0
  O  O30  1  0.916  0.822  0.294  1.0
  O  O31  1  0.178  0.084  0.706  1.0
  O  O32  1  0.416  0.322  0.206  1.0
  O  O33  1  0.678  0.584  0.794  1.0
  O  O34  1  0.429  0.106  0.480  1.0
  O  O35  1  0.894  0.571  0.520  1.0
  O  O36  1  0.453  0.862  0.758  1.0
  O  O37  1  0.138  0.547  0.242  1.0
  O  O38  1  0.953  0.362  0.742  1.0
  O  O39  1  0.638  0.047  0.258  1.0
  O  O40  1  0.561  0.238  0.752  1.0
  O  O41  1  0.929  0.606  0.020  1.0
  O  O42  1  0.061  0.738  0.748  1.0
  O  O43  1  0.262  0.939  0.252  1.0
  O  O44  1  0.394  0.071  0.980  1.0
  O  O45  1  0.762  0.439  0.248  1.0
[/CIF]
.
The material described by SmMo8O14 crystallizes in the orthorhombic Aea2 space group. Sm(1) is bonded in a 7-coordinate geometry to one O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. There are four inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(1), one O(3), one O(4), one O(6), one O(7), and one O(8) atom to form MoO6 octahedra that share  a cornercorner with one Mo(1)O6 octahedra,  a cornercorner with one Mo(2)O5 square pyramid,  a cornercorner with one Mo(4)O5 square pyramid, corners with two equivalent Mo(3)O5 square pyramids,  an edgeedge with one Mo(3)O5 square pyramid,  an edgeedge with one Mo(4)O5 square pyramid, and edges with two equivalent Mo(2)O5 square pyramids. The corner-sharing octahedral tilt angles are 13°. In the second Mo site, Mo(2) is bonded to one O(1), one O(3), one O(4), one O(5), and one O(7) atom to form MoO5 square pyramids that share  a cornercorner with one Mo(1)O6 octahedra,  a cornercorner with one Mo(2)O5 square pyramid, corners with two equivalent Mo(4)O5 square pyramids, corners with three equivalent Mo(3)O5 square pyramids, and edges with two equivalent Mo(1)O6 octahedra. The corner-sharing octahedral tilt angles are 53°. In the third Mo site, Mo(3) is bonded to one O(3), one O(4), one O(5), one O(6), and one O(8) atom to form distorted MoO5 square pyramids that share corners with two equivalent Mo(1)O6 octahedra, corners with three equivalent Mo(2)O5 square pyramids, corners with three equivalent Mo(4)O5 square pyramids, and  an edgeedge with one Mo(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 19-50°. In the fourth Mo site, Mo(4) is bonded to one O(2), one O(5), one O(6), one O(7), and one O(8) atom to form MoO5 square pyramids that share  a cornercorner with one Mo(1)O6 octahedra,  a cornercorner with one Mo(4)O5 square pyramid, corners with two equivalent Mo(2)O5 square pyramids, corners with three equivalent Mo(3)O5 square pyramids, and  an edgeedge with one Mo(1)O6 octahedra. The corner-sharing octahedral tilt angles are 58°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a see-saw-like geometry to two equivalent Mo(1) and two equivalent Mo(2) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Sm(1) and two equivalent Mo(4) atoms. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Sm(1), one Mo(1), one Mo(2), and one Mo(3) atom. In the fourth O site, O(4) is bonded to one Sm(1), one Mo(1), one Mo(2), and one Mo(3) atom to form a mixture of corner and edge-sharing OSmMo3 trigonal pyramids. In the fifth O site, O(5) is bonded to one Sm(1), one Mo(2), one Mo(3), and one Mo(4) atom to form a mixture of distorted corner and edge-sharing OSmMo3 trigonal pyramids. In the sixth O site, O(6) is bonded in a T-shaped geometry to one Mo(1), one Mo(3), and one Mo(4) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Mo(1), one Mo(2), and one Mo(4) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Mo(1), one Mo(3), and one Mo(4) atom. is represented by the CIF file [CIF]
data_Sm(Mo4O7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.225
_cell_length_b   8.225
_cell_length_c   9.387
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   97.948
_symmetry_Int_Tables_number   1
_cell_volume   628.930
_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
  Sm  Sm0  1  0.956  0.044  0.500  1.0
  Sm  Sm1  1  0.456  0.544  0.000  1.0
  Mo  Mo2  1  0.463  0.881  0.370  1.0
  Mo  Mo3  1  0.119  0.537  0.630  1.0
  Mo  Mo4  1  0.963  0.381  0.130  1.0
  Mo  Mo5  1  0.619  0.037  0.870  1.0
  Mo  Mo6  1  0.338  0.491  0.357  1.0
  Mo  Mo7  1  0.509  0.662  0.643  1.0
  Mo  Mo8  1  0.838  0.991  0.143  1.0
  Mo  Mo9  1  0.009  0.162  0.857  1.0
  Mo  Mo10  1  0.742  0.632  0.373  1.0
  Mo  Mo11  1  0.241  0.897  0.854  1.0
  Mo  Mo12  1  0.242  0.132  0.127  1.0
  Mo  Mo13  1  0.868  0.758  0.873  1.0
  Mo  Mo14  1  0.603  0.259  0.354  1.0
  Mo  Mo15  1  0.741  0.397  0.646  1.0
  Mo  Mo16  1  0.103  0.759  0.146  1.0
  Mo  Mo17  1  0.368  0.258  0.627  1.0
  O  O18  1  0.312  0.688  0.500  1.0
  O  O19  1  0.812  0.188  0.000  1.0
  O  O20  1  0.784  0.216  0.500  1.0
  O  O21  1  0.284  0.716  0.000  1.0
  O  O22  1  0.667  0.814  0.497  1.0
  O  O23  1  0.186  0.333  0.503  1.0
  O  O24  1  0.167  0.314  0.003  1.0
  O  O25  1  0.686  0.833  0.997  1.0
  O  O26  1  0.520  0.663  0.252  1.0
  O  O27  1  0.337  0.480  0.748  1.0
  O  O28  1  0.020  0.163  0.248  1.0
  O  O29  1  0.837  0.980  0.752  1.0
  O  O30  1  0.916  0.822  0.294  1.0
  O  O31  1  0.178  0.084  0.706  1.0
  O  O32  1  0.416  0.322  0.206  1.0
  O  O33  1  0.678  0.584  0.794  1.0
  O  O34  1  0.429  0.106  0.480  1.0
  O  O35  1  0.894  0.571  0.520  1.0
  O  O36  1  0.453  0.862  0.758  1.0
  O  O37  1  0.138  0.547  0.242  1.0
  O  O38  1  0.953  0.362  0.742  1.0
  O  O39  1  0.638  0.047  0.258  1.0
  O  O40  1  0.561  0.238  0.752  1.0
  O  O41  1  0.929  0.606  0.020  1.0
  O  O42  1  0.061  0.738  0.748  1.0
  O  O43  1  0.262  0.939  0.252  1.0
  O  O44  1  0.394  0.071  0.980  1.0
  O  O45  1  0.762  0.439  0.248  1.0
[/CIF]
.