The compound described by CaSb2O4 is Spinel-like structured and crystallizes in the trigonal P3m1 space group. There are six inequivalent Ca sites. In the first Ca site, Ca(1) is bonded to one O(9) and three equivalent O(1) atoms to form CaO4 tetrahedra that share corners with three equivalent Ca(5)O6 octahedra, corners with three equivalent Sb(5)O6 octahedra, and corners with six equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-68°. In the second Ca site, Ca(2) is bonded to one O(2) and three equivalent O(3) atoms to form CaO4 tetrahedra that share corners with three equivalent Ca(3)O6 octahedra, corners with three equivalent Sb(1)O6 octahedra, and corners with six equivalent Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-67°. In the third Ca site, Ca(3) is bonded to three equivalent O(3) and three equivalent O(4) atoms to form CaO6 octahedra that share corners with three equivalent Ca(2)O4 tetrahedra, corners with three equivalent Sb(4)O4 tetrahedra, edges with three equivalent Sb(1)O6 octahedra, and edges with three equivalent Sb(2)O6 octahedra. In the fourth Ca site, Ca(4) is bonded to one O(5) and three equivalent O(7) atoms to form CaO4 tetrahedra that share corners with three equivalent Sb(2)O6 octahedra, corners with three equivalent Sb(3)O6 octahedra, and corners with six equivalent Sb(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-69°. In the fifth Ca site, Ca(5) is bonded to three equivalent O(1) and three equivalent O(11) atoms to form CaO6 octahedra that share corners with three equivalent Ca(1)O4 tetrahedra, corners with three equivalent Sb(6)O4 tetrahedra, edges with three equivalent Sb(1)O6 octahedra, and edges with three equivalent Sb(5)O6 octahedra. In the sixth Ca site, Ca(6) is bonded to one O(12) and three equivalent O(8) atoms to form CaO4 tetrahedra that share corners with three equivalent Sb(3)O6 octahedra, corners with three equivalent Sb(5)O6 octahedra, and corners with six equivalent Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-61°. There are six inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(2), one O(6), two equivalent O(1), and two equivalent O(4) atoms to form SbO6 octahedra that share  a cornercorner with one Ca(2)O4 tetrahedra,  a cornercorner with one Sb(6)O4 tetrahedra, corners with two equivalent Ca(1)O4 tetrahedra, corners with two equivalent Sb(4)O4 tetrahedra,  an edgeedge with one Ca(3)O6 octahedra,  an edgeedge with one Ca(5)O6 octahedra, and edges with four equivalent Sb(1)O6 octahedra. In the second Sb site, Sb(2) is bonded to one O(10), one O(5), two equivalent O(3), and two equivalent O(8) atoms to form SbO6 octahedra that share  a cornercorner with one Ca(4)O4 tetrahedra,  a cornercorner with one Sb(4)O4 tetrahedra, corners with two equivalent Ca(2)O4 tetrahedra, corners with two equivalent Ca(6)O4 tetrahedra,  an edgeedge with one Ca(3)O6 octahedra,  an edgeedge with one Sb(3)O6 octahedra, and edges with four equivalent Sb(2)O6 octahedra. In the third Sb site, Sb(3) is bonded to three equivalent O(7) and three equivalent O(8) atoms to form distorted SbO6 octahedra that share corners with three equivalent Ca(4)O4 tetrahedra, corners with three equivalent Ca(6)O4 tetrahedra, edges with three equivalent Sb(2)O6 octahedra, and edges with three equivalent Sb(5)O6 octahedra. In the fourth Sb site, Sb(4) is bonded to one O(10) and three equivalent O(4) atoms to form SbO4 tetrahedra that share corners with three equivalent Ca(3)O6 octahedra, corners with three equivalent Sb(2)O6 octahedra, and corners with six equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-57°. In the fifth Sb site, Sb(5) is bonded to one O(12), one O(9), two equivalent O(11), and two equivalent O(7) atoms to form SbO6 octahedra that share  a cornercorner with one Ca(1)O4 tetrahedra,  a cornercorner with one Ca(6)O4 tetrahedra, corners with two equivalent Ca(4)O4 tetrahedra, corners with two equivalent Sb(6)O4 tetrahedra,  an edgeedge with one Ca(5)O6 octahedra,  an edgeedge with one Sb(3)O6 octahedra, and edges with four equivalent Sb(5)O6 octahedra. In the sixth Sb site, Sb(6) is bonded to one O(6) and three equivalent O(11) atoms to form SbO4 tetrahedra that share corners with three equivalent Ca(5)O6 octahedra, corners with three equivalent Sb(1)O6 octahedra, and corners with six equivalent Sb(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 51-58°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded to one Ca(1), one Ca(5), and two equivalent Sb(1) atoms to form distorted OCa2Sb2 trigonal pyramids that share corners with two equivalent O(1)Ca2Sb2 trigonal pyramids,  an edgeedge with one O(2)CaSb3 trigonal pyramid, and edges with two equivalent O(1)Ca2Sb2 trigonal pyramids. In the second O site, O(2) is bonded to one Ca(2) and three equivalent Sb(1) atoms to form a mixture of distorted corner and edge-sharing OCaSb3 trigonal pyramids. In the third O site, O(3) is bonded to one Ca(2), one Ca(3), and two equivalent Sb(2) atoms to form distorted OCa2Sb2 trigonal pyramids that share  a cornercorner with one O(2)CaSb3 trigonal pyramid, corners with two equivalent O(3)Ca2Sb2 trigonal pyramids,  an edgeedge with one O(5)CaSb3 trigonal pyramid, and edges with two equivalent O(3)Ca2Sb2 trigonal pyramids. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one Ca(3), one Sb(4), and two equivalent Sb(1) atoms. In the fifth O site, O(5) is bonded to one Ca(4) and three equivalent Sb(2) atoms to form distorted edge-sharing OCaSb3 trigonal pyramids. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to one Sb(6) and three equivalent Sb(1) atoms. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Ca(4), one Sb(3), and two equivalent Sb(5) atoms. In the eighth O site, O(8) is bonded in a rectangular see-saw-like geometry to one Ca(6), one Sb(3), and two equivalent Sb(2) atoms. In the ninth O site, O(9) is bonded in a distorted rectangular see-saw-like geometry to one Ca(1) and three equivalent Sb(5) atoms. In the tenth O site, O(10) is bonded in a distorted rectangular see-saw-like geometry to one Sb(4) and three equivalent Sb(2) atoms. In the eleventh O site, O(11) is bonded in a rectangular see-saw-like geometry to one Ca(5), one Sb(6), and two equivalent Sb(5) atoms. In the twelfth O site, O(12) is bonded in a distorted rectangular see-saw-like geometry to one Ca(6) and three equivalent Sb(5) atoms. is represented by the CIF file [CIF]
data_Ca(SbO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.864
_cell_length_b   6.864
_cell_length_c   17.361
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   708.344
_cell_formula_units_Z   6
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  0.667  0.333  0.960  1.0
  Ca  Ca1  1  0.333  0.667  0.630  1.0
  Ca  Ca2  1  0.000  0.000  0.672  1.0
  Ca  Ca3  1  0.000  0.000  0.288  1.0
  Ca  Ca4  1  0.333  0.667  0.004  1.0
  Ca  Ca5  1  0.333  0.667  0.374  1.0
  Sb  Sb6  1  0.170  0.339  0.839  1.0
  Sb  Sb7  1  0.661  0.830  0.839  1.0
  Sb  Sb8  1  0.838  0.675  0.506  1.0
  Sb  Sb9  1  0.170  0.830  0.839  1.0
  Sb  Sb10  1  0.325  0.162  0.506  1.0
  Sb  Sb11  1  0.667  0.333  0.345  1.0
  Sb  Sb12  1  0.667  0.333  0.710  1.0
  Sb  Sb13  1  0.502  0.003  0.170  1.0
  Sb  Sb14  1  0.838  0.162  0.506  1.0
  Sb  Sb15  1  0.997  0.498  0.170  1.0
  Sb  Sb16  1  0.502  0.498  0.170  1.0
  Sb  Sb17  1  0.000  0.000  0.047  1.0
  O  O18  1  0.481  0.963  0.905  1.0
  O  O19  1  0.333  0.667  0.769  1.0
  O  O20  1  0.037  0.519  0.905  1.0
  O  O21  1  0.481  0.519  0.905  1.0
  O  O22  1  0.152  0.305  0.574  1.0
  O  O23  1  0.836  0.164  0.748  1.0
  O  O24  1  0.000  0.000  0.435  1.0
  O  O25  1  0.327  0.164  0.748  1.0
  O  O26  1  0.000  0.000  0.924  1.0
  O  O27  1  0.695  0.848  0.574  1.0
  O  O28  1  0.152  0.848  0.574  1.0
  O  O29  1  0.836  0.673  0.748  1.0
  O  O30  1  0.825  0.650  0.235  1.0
  O  O31  1  0.517  0.483  0.412  1.0
  O  O32  1  0.967  0.483  0.412  1.0
  O  O33  1  0.667  0.333  0.096  1.0
  O  O34  1  0.667  0.333  0.585  1.0
  O  O35  1  0.350  0.175  0.235  1.0
  O  O36  1  0.825  0.175  0.235  1.0
  O  O37  1  0.517  0.033  0.412  1.0
  O  O38  1  0.173  0.827  0.082  1.0
  O  O39  1  0.654  0.827  0.082  1.0
  O  O40  1  0.333  0.667  0.247  1.0
  O  O41  1  0.173  0.346  0.082  1.0
[/CIF]
.
The compound described by CaSb2O4 is Spinel-like structured and crystallizes in the trigonal P3m1 space group. There are six inequivalent Ca sites. In the first Ca site, Ca(1) is bonded to one O(9) and three equivalent O(1) atoms to form CaO4 tetrahedra that share corners with three equivalent Ca(5)O6 octahedra, corners with three equivalent Sb(5)O6 octahedra, and corners with six equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-68°. In the second Ca site, Ca(2) is bonded to one O(2) and three equivalent O(3) atoms to form CaO4 tetrahedra that share corners with three equivalent Ca(3)O6 octahedra, corners with three equivalent Sb(1)O6 octahedra, and corners with six equivalent Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-67°. In the third Ca site, Ca(3) is bonded to three equivalent O(3) and three equivalent O(4) atoms to form CaO6 octahedra that share corners with three equivalent Ca(2)O4 tetrahedra, corners with three equivalent Sb(4)O4 tetrahedra, edges with three equivalent Sb(1)O6 octahedra, and edges with three equivalent Sb(2)O6 octahedra. In the fourth Ca site, Ca(4) is bonded to one O(5) and three equivalent O(7) atoms to form CaO4 tetrahedra that share corners with three equivalent Sb(2)O6 octahedra, corners with three equivalent Sb(3)O6 octahedra, and corners with six equivalent Sb(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-69°. In the fifth Ca site, Ca(5) is bonded to three equivalent O(1) and three equivalent O(11) atoms to form CaO6 octahedra that share corners with three equivalent Ca(1)O4 tetrahedra, corners with three equivalent Sb(6)O4 tetrahedra, edges with three equivalent Sb(1)O6 octahedra, and edges with three equivalent Sb(5)O6 octahedra. In the sixth Ca site, Ca(6) is bonded to one O(12) and three equivalent O(8) atoms to form CaO4 tetrahedra that share corners with three equivalent Sb(3)O6 octahedra, corners with three equivalent Sb(5)O6 octahedra, and corners with six equivalent Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-61°. There are six inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(2), one O(6), two equivalent O(1), and two equivalent O(4) atoms to form SbO6 octahedra that share  a cornercorner with one Ca(2)O4 tetrahedra,  a cornercorner with one Sb(6)O4 tetrahedra, corners with two equivalent Ca(1)O4 tetrahedra, corners with two equivalent Sb(4)O4 tetrahedra,  an edgeedge with one Ca(3)O6 octahedra,  an edgeedge with one Ca(5)O6 octahedra, and edges with four equivalent Sb(1)O6 octahedra. In the second Sb site, Sb(2) is bonded to one O(10), one O(5), two equivalent O(3), and two equivalent O(8) atoms to form SbO6 octahedra that share  a cornercorner with one Ca(4)O4 tetrahedra,  a cornercorner with one Sb(4)O4 tetrahedra, corners with two equivalent Ca(2)O4 tetrahedra, corners with two equivalent Ca(6)O4 tetrahedra,  an edgeedge with one Ca(3)O6 octahedra,  an edgeedge with one Sb(3)O6 octahedra, and edges with four equivalent Sb(2)O6 octahedra. In the third Sb site, Sb(3) is bonded to three equivalent O(7) and three equivalent O(8) atoms to form distorted SbO6 octahedra that share corners with three equivalent Ca(4)O4 tetrahedra, corners with three equivalent Ca(6)O4 tetrahedra, edges with three equivalent Sb(2)O6 octahedra, and edges with three equivalent Sb(5)O6 octahedra. In the fourth Sb site, Sb(4) is bonded to one O(10) and three equivalent O(4) atoms to form SbO4 tetrahedra that share corners with three equivalent Ca(3)O6 octahedra, corners with three equivalent Sb(2)O6 octahedra, and corners with six equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-57°. In the fifth Sb site, Sb(5) is bonded to one O(12), one O(9), two equivalent O(11), and two equivalent O(7) atoms to form SbO6 octahedra that share  a cornercorner with one Ca(1)O4 tetrahedra,  a cornercorner with one Ca(6)O4 tetrahedra, corners with two equivalent Ca(4)O4 tetrahedra, corners with two equivalent Sb(6)O4 tetrahedra,  an edgeedge with one Ca(5)O6 octahedra,  an edgeedge with one Sb(3)O6 octahedra, and edges with four equivalent Sb(5)O6 octahedra. In the sixth Sb site, Sb(6) is bonded to one O(6) and three equivalent O(11) atoms to form SbO4 tetrahedra that share corners with three equivalent Ca(5)O6 octahedra, corners with three equivalent Sb(1)O6 octahedra, and corners with six equivalent Sb(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 51-58°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded to one Ca(1), one Ca(5), and two equivalent Sb(1) atoms to form distorted OCa2Sb2 trigonal pyramids that share corners with two equivalent O(1)Ca2Sb2 trigonal pyramids,  an edgeedge with one O(2)CaSb3 trigonal pyramid, and edges with two equivalent O(1)Ca2Sb2 trigonal pyramids. In the second O site, O(2) is bonded to one Ca(2) and three equivalent Sb(1) atoms to form a mixture of distorted corner and edge-sharing OCaSb3 trigonal pyramids. In the third O site, O(3) is bonded to one Ca(2), one Ca(3), and two equivalent Sb(2) atoms to form distorted OCa2Sb2 trigonal pyramids that share  a cornercorner with one O(2)CaSb3 trigonal pyramid, corners with two equivalent O(3)Ca2Sb2 trigonal pyramids,  an edgeedge with one O(5)CaSb3 trigonal pyramid, and edges with two equivalent O(3)Ca2Sb2 trigonal pyramids. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one Ca(3), one Sb(4), and two equivalent Sb(1) atoms. In the fifth O site, O(5) is bonded to one Ca(4) and three equivalent Sb(2) atoms to form distorted edge-sharing OCaSb3 trigonal pyramids. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to one Sb(6) and three equivalent Sb(1) atoms. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Ca(4), one Sb(3), and two equivalent Sb(5) atoms. In the eighth O site, O(8) is bonded in a rectangular see-saw-like geometry to one Ca(6), one Sb(3), and two equivalent Sb(2) atoms. In the ninth O site, O(9) is bonded in a distorted rectangular see-saw-like geometry to one Ca(1) and three equivalent Sb(5) atoms. In the tenth O site, O(10) is bonded in a distorted rectangular see-saw-like geometry to one Sb(4) and three equivalent Sb(2) atoms. In the eleventh O site, O(11) is bonded in a rectangular see-saw-like geometry to one Ca(5), one Sb(6), and two equivalent Sb(5) atoms. In the twelfth O site, O(12) is bonded in a distorted rectangular see-saw-like geometry to one Ca(6) and three equivalent Sb(5) atoms. is represented by the CIF file [CIF]
data_Ca(SbO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.864
_cell_length_b   6.864
_cell_length_c   17.361
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   708.344
_cell_formula_units_Z   6
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  0.667  0.333  0.960  1.0
  Ca  Ca1  1  0.333  0.667  0.630  1.0
  Ca  Ca2  1  0.000  0.000  0.672  1.0
  Ca  Ca3  1  0.000  0.000  0.288  1.0
  Ca  Ca4  1  0.333  0.667  0.004  1.0
  Ca  Ca5  1  0.333  0.667  0.374  1.0
  Sb  Sb6  1  0.170  0.339  0.839  1.0
  Sb  Sb7  1  0.661  0.830  0.839  1.0
  Sb  Sb8  1  0.838  0.675  0.506  1.0
  Sb  Sb9  1  0.170  0.830  0.839  1.0
  Sb  Sb10  1  0.325  0.162  0.506  1.0
  Sb  Sb11  1  0.667  0.333  0.345  1.0
  Sb  Sb12  1  0.667  0.333  0.710  1.0
  Sb  Sb13  1  0.502  0.003  0.170  1.0
  Sb  Sb14  1  0.838  0.162  0.506  1.0
  Sb  Sb15  1  0.997  0.498  0.170  1.0
  Sb  Sb16  1  0.502  0.498  0.170  1.0
  Sb  Sb17  1  0.000  0.000  0.047  1.0
  O  O18  1  0.481  0.963  0.905  1.0
  O  O19  1  0.333  0.667  0.769  1.0
  O  O20  1  0.037  0.519  0.905  1.0
  O  O21  1  0.481  0.519  0.905  1.0
  O  O22  1  0.152  0.305  0.574  1.0
  O  O23  1  0.836  0.164  0.748  1.0
  O  O24  1  0.000  0.000  0.435  1.0
  O  O25  1  0.327  0.164  0.748  1.0
  O  O26  1  0.000  0.000  0.924  1.0
  O  O27  1  0.695  0.848  0.574  1.0
  O  O28  1  0.152  0.848  0.574  1.0
  O  O29  1  0.836  0.673  0.748  1.0
  O  O30  1  0.825  0.650  0.235  1.0
  O  O31  1  0.517  0.483  0.412  1.0
  O  O32  1  0.967  0.483  0.412  1.0
  O  O33  1  0.667  0.333  0.096  1.0
  O  O34  1  0.667  0.333  0.585  1.0
  O  O35  1  0.350  0.175  0.235  1.0
  O  O36  1  0.825  0.175  0.235  1.0
  O  O37  1  0.517  0.033  0.412  1.0
  O  O38  1  0.173  0.827  0.082  1.0
  O  O39  1  0.654  0.827  0.082  1.0
  O  O40  1  0.333  0.667  0.247  1.0
  O  O41  1  0.173  0.346  0.082  1.0
[/CIF]
.