The structure described by Dy2B3O8 crystallizes in the orthorhombic Pbcn space group. Dy(1) is bonded in a 7-coordinate geometry to one O(2), one O(3), two equivalent O(4), and three equivalent O(1) atoms. There are two inequivalent B sites. In the first B site, B(1) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form corner-sharing BO4 tetrahedra. In the second B site, B(2) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form corner-sharing BO4 tetrahedra. There are four inequivalent O sites. In the first O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Dy(1), one B(1), and one B(2) atom. In the second O site, O(4) is bonded in a distorted single-bond geometry to two equivalent Dy(1) and one B(1) atom. In the third O site, O(1) is bonded in a distorted single-bond geometry to three equivalent Dy(1) and one B(2) atom. In the fourth O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Dy(1) and two equivalent B(2) atoms. is represented by the CIF file [CIF]
data_Dy2B3O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.387
_cell_length_b   8.943
_cell_length_c   12.937
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   507.475
_cell_formula_units_Z   4
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  0.949  0.039  0.139  1.0
  Dy  Dy1  1  0.551  0.539  0.361  1.0
  Dy  Dy2  1  0.551  0.961  0.639  1.0
  Dy  Dy3  1  0.949  0.461  0.861  1.0
  Dy  Dy4  1  0.051  0.961  0.861  1.0
  Dy  Dy5  1  0.449  0.461  0.639  1.0
  Dy  Dy6  1  0.449  0.039  0.361  1.0
  Dy  Dy7  1  0.051  0.539  0.139  1.0
  B  B8  1  0.565  0.750  0.000  1.0
  B  B9  1  0.935  0.250  0.500  1.0
  B  B10  1  0.435  0.250  0.000  1.0
  B  B11  1  0.065  0.750  0.500  1.0
  B  B12  1  0.978  0.803  0.307  1.0
  B  B13  1  0.522  0.303  0.193  1.0
  B  B14  1  0.522  0.197  0.807  1.0
  B  B15  1  0.978  0.697  0.693  1.0
  B  B16  1  0.022  0.197  0.693  1.0
  B  B17  1  0.478  0.697  0.807  1.0
  B  B18  1  0.478  0.803  0.193  1.0
  B  B19  1  0.022  0.303  0.307  1.0
  O  O20  1  0.963  0.965  0.311  1.0
  O  O21  1  0.537  0.465  0.189  1.0
  O  O22  1  0.537  0.035  0.811  1.0
  O  O23  1  0.963  0.535  0.689  1.0
  O  O24  1  0.037  0.035  0.689  1.0
  O  O25  1  0.463  0.535  0.811  1.0
  O  O26  1  0.463  0.965  0.189  1.0
  O  O27  1  0.037  0.465  0.311  1.0
  O  O28  1  0.793  0.746  0.217  1.0
  O  O29  1  0.707  0.246  0.283  1.0
  O  O30  1  0.707  0.254  0.717  1.0
  O  O31  1  0.793  0.754  0.783  1.0
  O  O32  1  0.207  0.254  0.783  1.0
  O  O33  1  0.293  0.754  0.717  1.0
  O  O34  1  0.293  0.746  0.283  1.0
  O  O35  1  0.207  0.246  0.217  1.0
  O  O36  1  0.366  0.760  0.906  1.0
  O  O37  1  0.134  0.260  0.594  1.0
  O  O38  1  0.134  0.240  0.406  1.0
  O  O39  1  0.366  0.740  0.094  1.0
  O  O40  1  0.634  0.240  0.094  1.0
  O  O41  1  0.866  0.740  0.406  1.0
  O  O42  1  0.866  0.760  0.594  1.0
  O  O43  1  0.634  0.260  0.906  1.0
  O  O44  1  0.779  0.623  0.995  1.0
  O  O45  1  0.721  0.123  0.505  1.0
  O  O46  1  0.721  0.377  0.495  1.0
  O  O47  1  0.779  0.877  0.005  1.0
  O  O48  1  0.221  0.377  0.005  1.0
  O  O49  1  0.279  0.877  0.495  1.0
  O  O50  1  0.279  0.623  0.505  1.0
  O  O51  1  0.221  0.123  0.995  1.0
[/CIF]
.
The structure described by Dy2B3O8 crystallizes in the orthorhombic Pbcn space group. Dy(1) is bonded in a 7-coordinate geometry to one O(2), one O(3), two equivalent O(4), and three equivalent O(1) atoms. There are two inequivalent B sites. In the first B site, B(1) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form corner-sharing BO4 tetrahedra. In the second B site, B(2) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form corner-sharing BO4 tetrahedra. There are four inequivalent O sites. In the first O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Dy(1), one B(1), and one B(2) atom. In the second O site, O(4) is bonded in a distorted single-bond geometry to two equivalent Dy(1) and one B(1) atom. In the third O site, O(1) is bonded in a distorted single-bond geometry to three equivalent Dy(1) and one B(2) atom. In the fourth O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Dy(1) and two equivalent B(2) atoms. is represented by the CIF file [CIF]
data_Dy2B3O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.387
_cell_length_b   8.943
_cell_length_c   12.937
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   507.475
_cell_formula_units_Z   4
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  0.949  0.039  0.139  1.0
  Dy  Dy1  1  0.551  0.539  0.361  1.0
  Dy  Dy2  1  0.551  0.961  0.639  1.0
  Dy  Dy3  1  0.949  0.461  0.861  1.0
  Dy  Dy4  1  0.051  0.961  0.861  1.0
  Dy  Dy5  1  0.449  0.461  0.639  1.0
  Dy  Dy6  1  0.449  0.039  0.361  1.0
  Dy  Dy7  1  0.051  0.539  0.139  1.0
  B  B8  1  0.565  0.750  0.000  1.0
  B  B9  1  0.935  0.250  0.500  1.0
  B  B10  1  0.435  0.250  0.000  1.0
  B  B11  1  0.065  0.750  0.500  1.0
  B  B12  1  0.978  0.803  0.307  1.0
  B  B13  1  0.522  0.303  0.193  1.0
  B  B14  1  0.522  0.197  0.807  1.0
  B  B15  1  0.978  0.697  0.693  1.0
  B  B16  1  0.022  0.197  0.693  1.0
  B  B17  1  0.478  0.697  0.807  1.0
  B  B18  1  0.478  0.803  0.193  1.0
  B  B19  1  0.022  0.303  0.307  1.0
  O  O20  1  0.963  0.965  0.311  1.0
  O  O21  1  0.537  0.465  0.189  1.0
  O  O22  1  0.537  0.035  0.811  1.0
  O  O23  1  0.963  0.535  0.689  1.0
  O  O24  1  0.037  0.035  0.689  1.0
  O  O25  1  0.463  0.535  0.811  1.0
  O  O26  1  0.463  0.965  0.189  1.0
  O  O27  1  0.037  0.465  0.311  1.0
  O  O28  1  0.793  0.746  0.217  1.0
  O  O29  1  0.707  0.246  0.283  1.0
  O  O30  1  0.707  0.254  0.717  1.0
  O  O31  1  0.793  0.754  0.783  1.0
  O  O32  1  0.207  0.254  0.783  1.0
  O  O33  1  0.293  0.754  0.717  1.0
  O  O34  1  0.293  0.746  0.283  1.0
  O  O35  1  0.207  0.246  0.217  1.0
  O  O36  1  0.366  0.760  0.906  1.0
  O  O37  1  0.134  0.260  0.594  1.0
  O  O38  1  0.134  0.240  0.406  1.0
  O  O39  1  0.366  0.740  0.094  1.0
  O  O40  1  0.634  0.240  0.094  1.0
  O  O41  1  0.866  0.740  0.406  1.0
  O  O42  1  0.866  0.760  0.594  1.0
  O  O43  1  0.634  0.260  0.906  1.0
  O  O44  1  0.779  0.623  0.995  1.0
  O  O45  1  0.721  0.123  0.505  1.0
  O  O46  1  0.721  0.377  0.495  1.0
  O  O47  1  0.779  0.877  0.005  1.0
  O  O48  1  0.221  0.377  0.005  1.0
  O  O49  1  0.279  0.877  0.495  1.0
  O  O50  1  0.279  0.623  0.505  1.0
  O  O51  1  0.221  0.123  0.995  1.0
[/CIF]
.