The compound described by Sm2Ag2O5 is Aluminum carbonitride-like structured and crystallizes in the orthorhombic Ima2 space group. Sm(1) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(1), and two equivalent O(2) atoms. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form AgO6 octahedra that share corners with four equivalent Ag(1)O6 octahedra and corners with two equivalent Ag(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 39°. In the second Ag site, Ag(2) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form AgO4 tetrahedra that share corners with two equivalent Ag(1)O6 octahedra and corners with two equivalent Ag(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 51°. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sm(1) and two equivalent Ag(1) atoms to form a mixture of distorted corner and edge-sharing OSm2Ag2 tetrahedra. In the second O site, O(2) is bonded to two equivalent Sm(1), one Ag(1), and one Ag(2) atom to form a mixture of corner and edge-sharing OSm2Ag2 tetrahedra. In the third O site, O(3) is bonded to two equivalent Sm(1) and two equivalent Ag(2) atoms to form distorted corner-sharing OSm2Ag2 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sm2Ag2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.092
_cell_length_b   9.092
_cell_length_c   9.092
_cell_angle_alpha   143.415
_cell_angle_beta   141.864
_cell_angle_gamma   53.877
_symmetry_Int_Tables_number   1
_cell_volume   274.823
_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  0.875  0.400  0.517  1.0
  Sm  Sm1  1  0.125  0.642  0.525  1.0
  Sm  Sm2  1  0.383  0.900  0.525  1.0
  Sm  Sm3  1  0.617  0.142  0.517  1.0
  Ag  Ag4  1  0.000  0.989  0.989  1.0
  Ag  Ag5  1  0.500  0.489  0.989  1.0
  Ag  Ag6  1  0.765  0.776  0.041  1.0
  Ag  Ag7  1  0.235  0.276  0.010  1.0
  O  O8  1  0.779  0.796  0.486  1.0
  O  O9  1  0.221  0.708  0.018  1.0
  O  O10  1  0.810  0.296  0.018  1.0
  O  O11  1  0.190  0.208  0.486  1.0
  O  O12  1  0.747  0.786  0.787  1.0
  O  O13  1  0.253  0.040  0.039  1.0
  O  O14  1  0.499  0.286  0.039  1.0
  O  O15  1  0.501  0.540  0.787  1.0
  O  O16  1  0.838  0.200  0.538  1.0
  O  O17  1  0.162  0.700  0.362  1.0
[/CIF]
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The compound described by Sm2Ag2O5 is Aluminum carbonitride-like structured and crystallizes in the orthorhombic Ima2 space group. Sm(1) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(1), and two equivalent O(2) atoms. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form AgO6 octahedra that share corners with four equivalent Ag(1)O6 octahedra and corners with two equivalent Ag(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 39°. In the second Ag site, Ag(2) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form AgO4 tetrahedra that share corners with two equivalent Ag(1)O6 octahedra and corners with two equivalent Ag(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 51°. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sm(1) and two equivalent Ag(1) atoms to form a mixture of distorted corner and edge-sharing OSm2Ag2 tetrahedra. In the second O site, O(2) is bonded to two equivalent Sm(1), one Ag(1), and one Ag(2) atom to form a mixture of corner and edge-sharing OSm2Ag2 tetrahedra. In the third O site, O(3) is bonded to two equivalent Sm(1) and two equivalent Ag(2) atoms to form distorted corner-sharing OSm2Ag2 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sm2Ag2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.092
_cell_length_b   9.092
_cell_length_c   9.092
_cell_angle_alpha   143.415
_cell_angle_beta   141.864
_cell_angle_gamma   53.877
_symmetry_Int_Tables_number   1
_cell_volume   274.823
_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  0.875  0.400  0.517  1.0
  Sm  Sm1  1  0.125  0.642  0.525  1.0
  Sm  Sm2  1  0.383  0.900  0.525  1.0
  Sm  Sm3  1  0.617  0.142  0.517  1.0
  Ag  Ag4  1  0.000  0.989  0.989  1.0
  Ag  Ag5  1  0.500  0.489  0.989  1.0
  Ag  Ag6  1  0.765  0.776  0.041  1.0
  Ag  Ag7  1  0.235  0.276  0.010  1.0
  O  O8  1  0.779  0.796  0.486  1.0
  O  O9  1  0.221  0.708  0.018  1.0
  O  O10  1  0.810  0.296  0.018  1.0
  O  O11  1  0.190  0.208  0.486  1.0
  O  O12  1  0.747  0.786  0.787  1.0
  O  O13  1  0.253  0.040  0.039  1.0
  O  O14  1  0.499  0.286  0.039  1.0
  O  O15  1  0.501  0.540  0.787  1.0
  O  O16  1  0.838  0.200  0.538  1.0
  O  O17  1  0.162  0.700  0.362  1.0
[/CIF]
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