The material structure described by Eu2Mo3H2Se2O17 crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 8-coordinate geometry to one O(10), one O(11), one O(12), one O(3), and four equivalent O(1) atoms. In the second Eu site, Eu(2) is bonded in a 8-coordinate geometry to one O(2), one O(5), two equivalent O(4), two equivalent O(6), and two equivalent O(7) atoms. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form distorted corner-sharing MoO6 octahedra. The corner-sharing octahedral tilt angles range from 35-47°. In the second Mo site, Mo(2) is bonded in a 6-coordinate geometry to one O(10), one O(11), one O(3), one O(9), and two equivalent O(8) atoms. H(1) is bonded in a single-bond geometry to one O(12) atom. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded in a trigonal non-coplanar geometry to one O(2) and two equivalent O(1) atoms. In the second Se site, Se(2) is bonded in a trigonal non-coplanar geometry to one O(3) and two equivalent O(4) atoms. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Eu(1) and one Se(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Eu(2) and one Se(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Eu(1), one Mo(2), and one Se(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Eu(2), one Mo(1), and one Se(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Eu(2) and two equivalent Mo(1) atoms. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Eu(2) and one Mo(1) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Eu(2) and one Mo(1) atom. In the eighth O site, O(8) is bonded in a water-like geometry to one Mo(1) and one Mo(2) atom. In the ninth O site, O(9) is bonded in a distorted trigonal non-coplanar geometry to one Mo(2) and two equivalent Mo(1) atoms. In the tenth O site, O(10) is bonded in a distorted bent 150 degrees geometry to one Eu(1) and one Mo(2) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one Eu(1) and one Mo(2) atom. In the twelfth O site, O(12) is bonded in a distorted water-like geometry to one Eu(1) and two equivalent H(1) atoms. is represented by the CIF file [CIF]
data_Eu2Mo3H2Se2O17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.400
_cell_length_b   7.041
_cell_length_c   14.725
_cell_angle_alpha   79.755
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   754.996
_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
  Eu  Eu0  1  0.250  0.383  0.549  1.0
  Eu  Eu1  1  0.750  0.617  0.451  1.0
  Eu  Eu2  1  0.250  0.750  0.117  1.0
  Eu  Eu3  1  0.750  0.250  0.883  1.0
  Mo  Mo4  1  0.005  0.214  0.141  1.0
  Mo  Mo5  1  0.505  0.786  0.859  1.0
  Mo  Mo6  1  0.995  0.786  0.859  1.0
  Mo  Mo7  1  0.495  0.214  0.141  1.0
  Mo  Mo8  1  0.750  0.129  0.330  1.0
  Mo  Mo9  1  0.250  0.871  0.670  1.0
  H  H10  1  0.355  0.252  0.365  1.0
  H  H11  1  0.855  0.748  0.635  1.0
  H  H12  1  0.645  0.748  0.635  1.0
  H  H13  1  0.145  0.252  0.365  1.0
  Se  Se14  1  0.250  0.782  0.383  1.0
  Se  Se15  1  0.750  0.218  0.617  1.0
  Se  Se16  1  0.750  0.761  0.187  1.0
  Se  Se17  1  0.250  0.239  0.813  1.0
  O  O18  1  0.075  0.657  0.445  1.0
  O  O19  1  0.575  0.343  0.555  1.0
  O  O20  1  0.925  0.343  0.555  1.0
  O  O21  1  0.425  0.657  0.445  1.0
  O  O22  1  0.250  0.714  0.279  1.0
  O  O23  1  0.750  0.286  0.721  1.0
  O  O24  1  0.750  0.807  0.298  1.0
  O  O25  1  0.250  0.193  0.702  1.0
  O  O26  1  0.938  0.895  0.142  1.0
  O  O27  1  0.438  0.105  0.858  1.0
  O  O28  1  0.062  0.105  0.858  1.0
  O  O29  1  0.562  0.895  0.142  1.0
  O  O30  1  0.250  0.105  0.135  1.0
  O  O31  1  0.750  0.895  0.865  1.0
  O  O32  1  0.940  0.245  0.023  1.0
  O  O33  1  0.440  0.755  0.977  1.0
  O  O34  1  0.060  0.755  0.977  1.0
  O  O35  1  0.560  0.245  0.023  1.0
  O  O36  1  0.072  0.450  0.150  1.0
  O  O37  1  0.572  0.550  0.850  1.0
  O  O38  1  0.928  0.550  0.850  1.0
  O  O39  1  0.428  0.450  0.150  1.0
  O  O40  1  0.994  0.120  0.287  1.0
  O  O41  1  0.494  0.880  0.713  1.0
  O  O42  1  0.006  0.880  0.713  1.0
  O  O43  1  0.506  0.120  0.287  1.0
  O  O44  1  0.750  0.231  0.178  1.0
  O  O45  1  0.250  0.769  0.822  1.0
  O  O46  1  0.750  0.363  0.360  1.0
  O  O47  1  0.250  0.637  0.640  1.0
  O  O48  1  0.750  0.975  0.440  1.0
  O  O49  1  0.250  0.025  0.560  1.0
  O  O50  1  0.250  0.309  0.391  1.0
  O  O51  1  0.750  0.691  0.609  1.0
[/CIF]
.
The material structure described by Eu2Mo3H2Se2O17 crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 8-coordinate geometry to one O(10), one O(11), one O(12), one O(3), and four equivalent O(1) atoms. In the second Eu site, Eu(2) is bonded in a 8-coordinate geometry to one O(2), one O(5), two equivalent O(4), two equivalent O(6), and two equivalent O(7) atoms. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form distorted corner-sharing MoO6 octahedra. The corner-sharing octahedral tilt angles range from 35-47°. In the second Mo site, Mo(2) is bonded in a 6-coordinate geometry to one O(10), one O(11), one O(3), one O(9), and two equivalent O(8) atoms. H(1) is bonded in a single-bond geometry to one O(12) atom. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded in a trigonal non-coplanar geometry to one O(2) and two equivalent O(1) atoms. In the second Se site, Se(2) is bonded in a trigonal non-coplanar geometry to one O(3) and two equivalent O(4) atoms. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Eu(1) and one Se(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Eu(2) and one Se(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Eu(1), one Mo(2), and one Se(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Eu(2), one Mo(1), and one Se(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Eu(2) and two equivalent Mo(1) atoms. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Eu(2) and one Mo(1) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Eu(2) and one Mo(1) atom. In the eighth O site, O(8) is bonded in a water-like geometry to one Mo(1) and one Mo(2) atom. In the ninth O site, O(9) is bonded in a distorted trigonal non-coplanar geometry to one Mo(2) and two equivalent Mo(1) atoms. In the tenth O site, O(10) is bonded in a distorted bent 150 degrees geometry to one Eu(1) and one Mo(2) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one Eu(1) and one Mo(2) atom. In the twelfth O site, O(12) is bonded in a distorted water-like geometry to one Eu(1) and two equivalent H(1) atoms. is represented by the CIF file [CIF]
data_Eu2Mo3H2Se2O17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.400
_cell_length_b   7.041
_cell_length_c   14.725
_cell_angle_alpha   79.755
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   754.996
_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
  Eu  Eu0  1  0.250  0.383  0.549  1.0
  Eu  Eu1  1  0.750  0.617  0.451  1.0
  Eu  Eu2  1  0.250  0.750  0.117  1.0
  Eu  Eu3  1  0.750  0.250  0.883  1.0
  Mo  Mo4  1  0.005  0.214  0.141  1.0
  Mo  Mo5  1  0.505  0.786  0.859  1.0
  Mo  Mo6  1  0.995  0.786  0.859  1.0
  Mo  Mo7  1  0.495  0.214  0.141  1.0
  Mo  Mo8  1  0.750  0.129  0.330  1.0
  Mo  Mo9  1  0.250  0.871  0.670  1.0
  H  H10  1  0.355  0.252  0.365  1.0
  H  H11  1  0.855  0.748  0.635  1.0
  H  H12  1  0.645  0.748  0.635  1.0
  H  H13  1  0.145  0.252  0.365  1.0
  Se  Se14  1  0.250  0.782  0.383  1.0
  Se  Se15  1  0.750  0.218  0.617  1.0
  Se  Se16  1  0.750  0.761  0.187  1.0
  Se  Se17  1  0.250  0.239  0.813  1.0
  O  O18  1  0.075  0.657  0.445  1.0
  O  O19  1  0.575  0.343  0.555  1.0
  O  O20  1  0.925  0.343  0.555  1.0
  O  O21  1  0.425  0.657  0.445  1.0
  O  O22  1  0.250  0.714  0.279  1.0
  O  O23  1  0.750  0.286  0.721  1.0
  O  O24  1  0.750  0.807  0.298  1.0
  O  O25  1  0.250  0.193  0.702  1.0
  O  O26  1  0.938  0.895  0.142  1.0
  O  O27  1  0.438  0.105  0.858  1.0
  O  O28  1  0.062  0.105  0.858  1.0
  O  O29  1  0.562  0.895  0.142  1.0
  O  O30  1  0.250  0.105  0.135  1.0
  O  O31  1  0.750  0.895  0.865  1.0
  O  O32  1  0.940  0.245  0.023  1.0
  O  O33  1  0.440  0.755  0.977  1.0
  O  O34  1  0.060  0.755  0.977  1.0
  O  O35  1  0.560  0.245  0.023  1.0
  O  O36  1  0.072  0.450  0.150  1.0
  O  O37  1  0.572  0.550  0.850  1.0
  O  O38  1  0.928  0.550  0.850  1.0
  O  O39  1  0.428  0.450  0.150  1.0
  O  O40  1  0.994  0.120  0.287  1.0
  O  O41  1  0.494  0.880  0.713  1.0
  O  O42  1  0.006  0.880  0.713  1.0
  O  O43  1  0.506  0.120  0.287  1.0
  O  O44  1  0.750  0.231  0.178  1.0
  O  O45  1  0.250  0.769  0.822  1.0
  O  O46  1  0.750  0.363  0.360  1.0
  O  O47  1  0.250  0.637  0.640  1.0
  O  O48  1  0.750  0.975  0.440  1.0
  O  O49  1  0.250  0.025  0.560  1.0
  O  O50  1  0.250  0.309  0.391  1.0
  O  O51  1  0.750  0.691  0.609  1.0
[/CIF]
.