The structure described by Ca2YAgO5 crystallizes in the monoclinic Cc space group. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 7-coordinate geometry to one O(1), two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms. In the second Ca site, Ca(2) is bonded in a 5-coordinate geometry to one O(1), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. Y(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form YO4 tetrahedra that share corners with two equivalent Ag(1)O6 octahedra and corners with two equivalent Y(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 58°. Ag(1) is bonded to one O(2), one O(3), two equivalent O(4), and two equivalent O(5) atoms to form AgO6 octahedra that share corners with four equivalent Ag(1)O6 octahedra and corners with two equivalent Y(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 29-30°. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Ca(1), one Ca(2), and two equivalent Y(1) atoms to form OCa2Y2 tetrahedra that share corners with two equivalent O(1)Ca2Y2 tetrahedra, corners with four equivalent O(2)Ca2YAg trigonal pyramids, and corners with four equivalent O(3)Ca2YAg trigonal pyramids. In the second O site, O(2) is bonded to two equivalent Ca(1), one Y(1), and one Ag(1) atom to form distorted OCa2YAg trigonal pyramids that share corners with four equivalent O(1)Ca2Y2 tetrahedra, corners with two equivalent O(2)Ca2YAg trigonal pyramids, and corners with two equivalent O(3)Ca2YAg trigonal pyramids. In the third O site, O(3) is bonded to two equivalent Ca(2), one Y(1), and one Ag(1) atom to form distorted OCa2YAg trigonal pyramids that share corners with four equivalent O(1)Ca2Y2 tetrahedra, corners with two equivalent O(2)Ca2YAg trigonal pyramids, and corners with two equivalent O(3)Ca2YAg trigonal pyramids. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to two equivalent Ca(1), two equivalent Ca(2), and two equivalent Ag(1) atoms. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to two equivalent Ca(1), two equivalent Ca(2), and two equivalent Ag(1) atoms. is represented by the CIF file [CIF]
data_Ca2YAgO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.772
_cell_length_b   8.772
_cell_length_c   5.803
_cell_angle_alpha   71.363
_cell_angle_beta   71.363
_cell_angle_gamma   39.712
_symmetry_Int_Tables_number   1
_cell_volume   268.299
_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
  Ca  Ca0  1  0.578  0.132  0.922  1.0
  Ca  Ca1  1  0.865  0.422  0.638  1.0
  Ca  Ca2  1  0.422  0.865  0.138  1.0
  Ca  Ca3  1  0.132  0.578  0.422  1.0
  Y  Y4  1  0.203  0.796  0.805  1.0
  Y  Y5  1  0.796  0.203  0.305  1.0
  Ag  Ag6  1  0.499  1.000  0.494  1.0
  Ag  Ag7  1  1.000  0.499  0.994  1.0
  O  O8  1  0.144  0.853  0.185  1.0
  O  O9  1  0.853  0.144  0.685  1.0
  O  O10  1  0.523  0.256  0.274  1.0
  O  O11  1  0.477  0.739  0.555  1.0
  O  O12  1  0.256  0.523  0.774  1.0
  O  O13  1  0.739  0.477  0.055  1.0
  O  O14  1  0.197  0.231  0.292  1.0
  O  O15  1  0.792  0.775  0.209  1.0
  O  O16  1  0.775  0.792  0.709  1.0
  O  O17  1  0.231  0.197  0.792  1.0
[/CIF]
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The structure described by Ca2YAgO5 crystallizes in the monoclinic Cc space group. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 7-coordinate geometry to one O(1), two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms. In the second Ca site, Ca(2) is bonded in a 5-coordinate geometry to one O(1), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. Y(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form YO4 tetrahedra that share corners with two equivalent Ag(1)O6 octahedra and corners with two equivalent Y(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 58°. Ag(1) is bonded to one O(2), one O(3), two equivalent O(4), and two equivalent O(5) atoms to form AgO6 octahedra that share corners with four equivalent Ag(1)O6 octahedra and corners with two equivalent Y(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 29-30°. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Ca(1), one Ca(2), and two equivalent Y(1) atoms to form OCa2Y2 tetrahedra that share corners with two equivalent O(1)Ca2Y2 tetrahedra, corners with four equivalent O(2)Ca2YAg trigonal pyramids, and corners with four equivalent O(3)Ca2YAg trigonal pyramids. In the second O site, O(2) is bonded to two equivalent Ca(1), one Y(1), and one Ag(1) atom to form distorted OCa2YAg trigonal pyramids that share corners with four equivalent O(1)Ca2Y2 tetrahedra, corners with two equivalent O(2)Ca2YAg trigonal pyramids, and corners with two equivalent O(3)Ca2YAg trigonal pyramids. In the third O site, O(3) is bonded to two equivalent Ca(2), one Y(1), and one Ag(1) atom to form distorted OCa2YAg trigonal pyramids that share corners with four equivalent O(1)Ca2Y2 tetrahedra, corners with two equivalent O(2)Ca2YAg trigonal pyramids, and corners with two equivalent O(3)Ca2YAg trigonal pyramids. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to two equivalent Ca(1), two equivalent Ca(2), and two equivalent Ag(1) atoms. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to two equivalent Ca(1), two equivalent Ca(2), and two equivalent Ag(1) atoms. is represented by the CIF file [CIF]
data_Ca2YAgO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.772
_cell_length_b   8.772
_cell_length_c   5.803
_cell_angle_alpha   71.363
_cell_angle_beta   71.363
_cell_angle_gamma   39.712
_symmetry_Int_Tables_number   1
_cell_volume   268.299
_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
  Ca  Ca0  1  0.578  0.132  0.922  1.0
  Ca  Ca1  1  0.865  0.422  0.638  1.0
  Ca  Ca2  1  0.422  0.865  0.138  1.0
  Ca  Ca3  1  0.132  0.578  0.422  1.0
  Y  Y4  1  0.203  0.796  0.805  1.0
  Y  Y5  1  0.796  0.203  0.305  1.0
  Ag  Ag6  1  0.499  1.000  0.494  1.0
  Ag  Ag7  1  1.000  0.499  0.994  1.0
  O  O8  1  0.144  0.853  0.185  1.0
  O  O9  1  0.853  0.144  0.685  1.0
  O  O10  1  0.523  0.256  0.274  1.0
  O  O11  1  0.477  0.739  0.555  1.0
  O  O12  1  0.256  0.523  0.774  1.0
  O  O13  1  0.739  0.477  0.055  1.0
  O  O14  1  0.197  0.231  0.292  1.0
  O  O15  1  0.792  0.775  0.209  1.0
  O  O16  1  0.775  0.792  0.709  1.0
  O  O17  1  0.231  0.197  0.792  1.0
[/CIF]
.