The material structure described by BeEu2NdO5 crystallizes in the orthorhombic Pnma space group. Be(1) is bonded in a tetrahedral geometry to one O(3), one O(4), and two equivalent O(1) atoms. Eu(1) is bonded in a 9-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(4), and three equivalent O(1) atoms. Nd(1) is bonded in a 8-coordinate geometry to one O(3), one O(4), two equivalent O(2), and four equivalent O(1) atoms. There are four inequivalent O sites. In the first O site, O(4) is bonded in a distorted single-bond geometry to one Be(1), four equivalent Eu(1), and one Nd(1) atom. In the second O site, O(1) is bonded in a 1-coordinate geometry to one Be(1), three equivalent Eu(1), and two equivalent Nd(1) atoms. In the third O site, O(2) is bonded to four equivalent Eu(1) and two equivalent Nd(1) atoms to form distorted corner-sharing ONd2Eu4 octahedra. The corner-sharing octahedral tilt angles range from 34-44°. In the fourth O site, O(3) is bonded in a distorted single-bond geometry to one Be(1), four equivalent Eu(1), and one Nd(1) atom. is represented by the CIF file [CIF]
data_NdEu2BeO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.578
_cell_length_b   7.270
_cell_length_c   9.573
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   457.773
_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
  Nd  Nd0  1  0.096  0.750  0.976  1.0
  Nd  Nd1  1  0.904  0.250  0.024  1.0
  Nd  Nd2  1  0.596  0.250  0.524  1.0
  Nd  Nd3  1  0.404  0.750  0.476  1.0
  Eu  Eu4  1  0.579  0.523  0.827  1.0
  Eu  Eu5  1  0.421  0.477  0.173  1.0
  Eu  Eu6  1  0.079  0.477  0.673  1.0
  Eu  Eu7  1  0.421  0.023  0.173  1.0
  Eu  Eu8  1  0.921  0.523  0.327  1.0
  Eu  Eu9  1  0.579  0.977  0.827  1.0
  Eu  Eu10  1  0.921  0.977  0.327  1.0
  Eu  Eu11  1  0.079  0.023  0.673  1.0
  Be  Be12  1  0.808  0.750  0.600  1.0
  Be  Be13  1  0.192  0.250  0.400  1.0
  Be  Be14  1  0.308  0.250  0.900  1.0
  Be  Be15  1  0.692  0.750  0.100  1.0
  O  O16  1  0.691  0.559  0.567  1.0
  O  O17  1  0.309  0.441  0.433  1.0
  O  O18  1  0.191  0.441  0.933  1.0
  O  O19  1  0.309  0.059  0.433  1.0
  O  O20  1  0.809  0.559  0.067  1.0
  O  O21  1  0.691  0.941  0.567  1.0
  O  O22  1  0.809  0.941  0.067  1.0
  O  O23  1  0.191  0.059  0.933  1.0
  O  O24  1  0.335  0.750  0.723  1.0
  O  O25  1  0.665  0.250  0.277  1.0
  O  O26  1  0.835  0.250  0.777  1.0
  O  O27  1  0.165  0.750  0.223  1.0
  O  O28  1  0.021  0.750  0.509  1.0
  O  O29  1  0.979  0.250  0.491  1.0
  O  O30  1  0.521  0.250  0.991  1.0
  O  O31  1  0.479  0.750  0.009  1.0
  O  O32  1  0.864  0.750  0.772  1.0
  O  O33  1  0.136  0.250  0.228  1.0
  O  O34  1  0.364  0.250  0.728  1.0
  O  O35  1  0.636  0.750  0.272  1.0
[/CIF]
.
The material structure described by BeEu2NdO5 crystallizes in the orthorhombic Pnma space group. Be(1) is bonded in a tetrahedral geometry to one O(3), one O(4), and two equivalent O(1) atoms. Eu(1) is bonded in a 9-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(4), and three equivalent O(1) atoms. Nd(1) is bonded in a 8-coordinate geometry to one O(3), one O(4), two equivalent O(2), and four equivalent O(1) atoms. There are four inequivalent O sites. In the first O site, O(4) is bonded in a distorted single-bond geometry to one Be(1), four equivalent Eu(1), and one Nd(1) atom. In the second O site, O(1) is bonded in a 1-coordinate geometry to one Be(1), three equivalent Eu(1), and two equivalent Nd(1) atoms. In the third O site, O(2) is bonded to four equivalent Eu(1) and two equivalent Nd(1) atoms to form distorted corner-sharing ONd2Eu4 octahedra. The corner-sharing octahedral tilt angles range from 34-44°. In the fourth O site, O(3) is bonded in a distorted single-bond geometry to one Be(1), four equivalent Eu(1), and one Nd(1) atom. is represented by the CIF file [CIF]
data_NdEu2BeO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.578
_cell_length_b   7.270
_cell_length_c   9.573
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   457.773
_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
  Nd  Nd0  1  0.096  0.750  0.976  1.0
  Nd  Nd1  1  0.904  0.250  0.024  1.0
  Nd  Nd2  1  0.596  0.250  0.524  1.0
  Nd  Nd3  1  0.404  0.750  0.476  1.0
  Eu  Eu4  1  0.579  0.523  0.827  1.0
  Eu  Eu5  1  0.421  0.477  0.173  1.0
  Eu  Eu6  1  0.079  0.477  0.673  1.0
  Eu  Eu7  1  0.421  0.023  0.173  1.0
  Eu  Eu8  1  0.921  0.523  0.327  1.0
  Eu  Eu9  1  0.579  0.977  0.827  1.0
  Eu  Eu10  1  0.921  0.977  0.327  1.0
  Eu  Eu11  1  0.079  0.023  0.673  1.0
  Be  Be12  1  0.808  0.750  0.600  1.0
  Be  Be13  1  0.192  0.250  0.400  1.0
  Be  Be14  1  0.308  0.250  0.900  1.0
  Be  Be15  1  0.692  0.750  0.100  1.0
  O  O16  1  0.691  0.559  0.567  1.0
  O  O17  1  0.309  0.441  0.433  1.0
  O  O18  1  0.191  0.441  0.933  1.0
  O  O19  1  0.309  0.059  0.433  1.0
  O  O20  1  0.809  0.559  0.067  1.0
  O  O21  1  0.691  0.941  0.567  1.0
  O  O22  1  0.809  0.941  0.067  1.0
  O  O23  1  0.191  0.059  0.933  1.0
  O  O24  1  0.335  0.750  0.723  1.0
  O  O25  1  0.665  0.250  0.277  1.0
  O  O26  1  0.835  0.250  0.777  1.0
  O  O27  1  0.165  0.750  0.223  1.0
  O  O28  1  0.021  0.750  0.509  1.0
  O  O29  1  0.979  0.250  0.491  1.0
  O  O30  1  0.521  0.250  0.991  1.0
  O  O31  1  0.479  0.750  0.009  1.0
  O  O32  1  0.864  0.750  0.772  1.0
  O  O33  1  0.136  0.250  0.228  1.0
  O  O34  1  0.364  0.250  0.728  1.0
  O  O35  1  0.636  0.750  0.272  1.0
[/CIF]
.