The structure described by Sm2BaZnO5 crystallizes in the orthorhombic Pnma space group. Ba(1) is bonded in a 11-coordinate geometry to three equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to one O(1), two equivalent O(2), and four equivalent O(3) atoms to form distorted SmO7 pentagonal bipyramids that share corners with five equivalent Zn(1)O5 trigonal bipyramids, edges with two equivalent Sm(1)O7 pentagonal bipyramids, and  an edgeedge with one Zn(1)O5 trigonal bipyramid. In the second Sm site, Sm(2) is bonded in a 7-coordinate geometry to one O(1), two equivalent O(3), and four equivalent O(2) atoms. Zn(1) is bonded to one O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted ZnO5 trigonal bipyramids that share corners with five equivalent Sm(1)O7 pentagonal bipyramids and  an edgeedge with one Sm(1)O7 pentagonal bipyramid. There are three inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Ba(1), one Sm(1), one Sm(2), and one Zn(1) atom to form a mixture of distorted corner and edge-sharing OBa3Sm2Zn octahedra. The corner-sharing octahedral tilt angles are 2°. In the second O site, O(2) is bonded in a 6-coordinate geometry to two equivalent Ba(1), one Sm(1), two equivalent Sm(2), and one Zn(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Ba(1), one Sm(2), two equivalent Sm(1), and one Zn(1) atom. is represented by the CIF card [CIF]
data_BaSm2ZnO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.860
_cell_length_b   7.290
_cell_length_c   12.679
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   541.639
_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
  Ba  Ba0  1  0.750  0.077  0.100  1.0
  Ba  Ba1  1  0.750  0.423  0.600  1.0
  Ba  Ba2  1  0.250  0.577  0.400  1.0
  Ba  Ba3  1  0.250  0.923  0.900  1.0
  Sm  Sm4  1  0.250  0.398  0.075  1.0
  Sm  Sm5  1  0.750  0.617  0.208  1.0
  Sm  Sm6  1  0.750  0.883  0.708  1.0
  Sm  Sm7  1  0.250  0.117  0.292  1.0
  Sm  Sm8  1  0.750  0.602  0.925  1.0
  Sm  Sm9  1  0.750  0.898  0.425  1.0
  Sm  Sm10  1  0.250  0.102  0.575  1.0
  Sm  Sm11  1  0.250  0.383  0.792  1.0
  Zn  Zn12  1  0.250  0.808  0.150  1.0
  Zn  Zn13  1  0.750  0.192  0.850  1.0
  Zn  Zn14  1  0.750  0.308  0.350  1.0
  Zn  Zn15  1  0.250  0.692  0.650  1.0
  O  O16  1  0.250  0.431  0.599  1.0
  O  O17  1  0.750  0.569  0.401  1.0
  O  O18  1  0.750  0.931  0.901  1.0
  O  O19  1  0.250  0.069  0.099  1.0
  O  O20  1  0.003  0.853  0.275  1.0
  O  O21  1  0.503  0.147  0.725  1.0
  O  O22  1  0.997  0.353  0.225  1.0
  O  O23  1  0.497  0.647  0.775  1.0
  O  O24  1  0.997  0.147  0.725  1.0
  O  O25  1  0.497  0.853  0.275  1.0
  O  O26  1  0.003  0.647  0.775  1.0
  O  O27  1  0.503  0.353  0.225  1.0
  O  O28  1  0.495  0.666  0.066  1.0
  O  O29  1  0.995  0.334  0.934  1.0
  O  O30  1  0.505  0.166  0.434  1.0
  O  O31  1  0.005  0.834  0.566  1.0
  O  O32  1  0.995  0.166  0.434  1.0
  O  O33  1  0.495  0.834  0.566  1.0
  O  O34  1  0.005  0.666  0.066  1.0
  O  O35  1  0.505  0.334  0.934  1.0
[/CIF]
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The structure described by Sm2BaZnO5 crystallizes in the orthorhombic Pnma space group. Ba(1) is bonded in a 11-coordinate geometry to three equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to one O(1), two equivalent O(2), and four equivalent O(3) atoms to form distorted SmO7 pentagonal bipyramids that share corners with five equivalent Zn(1)O5 trigonal bipyramids, edges with two equivalent Sm(1)O7 pentagonal bipyramids, and  an edgeedge with one Zn(1)O5 trigonal bipyramid. In the second Sm site, Sm(2) is bonded in a 7-coordinate geometry to one O(1), two equivalent O(3), and four equivalent O(2) atoms. Zn(1) is bonded to one O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted ZnO5 trigonal bipyramids that share corners with five equivalent Sm(1)O7 pentagonal bipyramids and  an edgeedge with one Sm(1)O7 pentagonal bipyramid. There are three inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Ba(1), one Sm(1), one Sm(2), and one Zn(1) atom to form a mixture of distorted corner and edge-sharing OBa3Sm2Zn octahedra. The corner-sharing octahedral tilt angles are 2°. In the second O site, O(2) is bonded in a 6-coordinate geometry to two equivalent Ba(1), one Sm(1), two equivalent Sm(2), and one Zn(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Ba(1), one Sm(2), two equivalent Sm(1), and one Zn(1) atom. is represented by the CIF card [CIF]
data_BaSm2ZnO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.860
_cell_length_b   7.290
_cell_length_c   12.679
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   541.639
_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
  Ba  Ba0  1  0.750  0.077  0.100  1.0
  Ba  Ba1  1  0.750  0.423  0.600  1.0
  Ba  Ba2  1  0.250  0.577  0.400  1.0
  Ba  Ba3  1  0.250  0.923  0.900  1.0
  Sm  Sm4  1  0.250  0.398  0.075  1.0
  Sm  Sm5  1  0.750  0.617  0.208  1.0
  Sm  Sm6  1  0.750  0.883  0.708  1.0
  Sm  Sm7  1  0.250  0.117  0.292  1.0
  Sm  Sm8  1  0.750  0.602  0.925  1.0
  Sm  Sm9  1  0.750  0.898  0.425  1.0
  Sm  Sm10  1  0.250  0.102  0.575  1.0
  Sm  Sm11  1  0.250  0.383  0.792  1.0
  Zn  Zn12  1  0.250  0.808  0.150  1.0
  Zn  Zn13  1  0.750  0.192  0.850  1.0
  Zn  Zn14  1  0.750  0.308  0.350  1.0
  Zn  Zn15  1  0.250  0.692  0.650  1.0
  O  O16  1  0.250  0.431  0.599  1.0
  O  O17  1  0.750  0.569  0.401  1.0
  O  O18  1  0.750  0.931  0.901  1.0
  O  O19  1  0.250  0.069  0.099  1.0
  O  O20  1  0.003  0.853  0.275  1.0
  O  O21  1  0.503  0.147  0.725  1.0
  O  O22  1  0.997  0.353  0.225  1.0
  O  O23  1  0.497  0.647  0.775  1.0
  O  O24  1  0.997  0.147  0.725  1.0
  O  O25  1  0.497  0.853  0.275  1.0
  O  O26  1  0.003  0.647  0.775  1.0
  O  O27  1  0.503  0.353  0.225  1.0
  O  O28  1  0.495  0.666  0.066  1.0
  O  O29  1  0.995  0.334  0.934  1.0
  O  O30  1  0.505  0.166  0.434  1.0
  O  O31  1  0.005  0.834  0.566  1.0
  O  O32  1  0.995  0.166  0.434  1.0
  O  O33  1  0.495  0.834  0.566  1.0
  O  O34  1  0.005  0.666  0.066  1.0
  O  O35  1  0.505  0.334  0.934  1.0
[/CIF]
.