The structure described by CaSb2O4 is Ilmenite-like structured and crystallizes in the orthorhombic Pmmn space group. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded to two equivalent O(1) and four equivalent O(3) atoms to form distorted CaO6 pentagonal pyramids that share edges with four equivalent Sb(2)O6 octahedra. In the second Ca site, Ca(2) is bonded in a 6-coordinate geometry to two equivalent O(2) and four equivalent O(3) atoms. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), and two equivalent O(3) atoms. In the second Sb site, Sb(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form SbO6 octahedra that share edges with two equivalent Sb(2)O6 octahedra and edges with two equivalent Ca(1)O6 pentagonal pyramids. There are three inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Ca(1), one Sb(1), and two equivalent Sb(2) atoms. In the second O site, O(2) is bonded to one Ca(2), one Sb(1), and two equivalent Sb(2) atoms to form OCaSb3 trigonal pyramids that share corners with three equivalent O(2)CaSb3 trigonal pyramids, corners with six equivalent O(3)Ca2Sb2 trigonal pyramids, and edges with two equivalent O(3)Ca2Sb2 trigonal pyramids. In the third O site, O(3) is bonded to one Ca(1), one Ca(2), one Sb(1), and one Sb(2) atom to form distorted OCa2Sb2 trigonal pyramids that share corners with three equivalent O(2)CaSb3 trigonal pyramids, corners with four equivalent O(3)Ca2Sb2 trigonal pyramids,  an edgeedge with one O(2)CaSb3 trigonal pyramid, and edges with two equivalent O(3)Ca2Sb2 trigonal pyramids. is represented by the CIF card [CIF]
data_Ca(SbO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.769
_cell_length_b   6.869
_cell_length_c   12.138
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   481.014
_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
  Ca  Ca0  1  0.369  0.000  0.500  1.0
  Ca  Ca1  1  0.631  0.500  0.000  1.0
  Ca  Ca2  1  0.041  0.000  0.000  1.0
  Ca  Ca3  1  0.959  0.500  0.500  1.0
  Sb  Sb4  1  0.002  0.500  0.208  1.0
  Sb  Sb5  1  0.002  0.500  0.792  1.0
  Sb  Sb6  1  0.998  0.000  0.292  1.0
  Sb  Sb7  1  0.998  0.000  0.708  1.0
  Sb  Sb8  1  0.500  0.250  0.250  1.0
  Sb  Sb9  1  0.500  0.750  0.750  1.0
  Sb  Sb10  1  0.500  0.750  0.250  1.0
  Sb  Sb11  1  0.500  0.250  0.750  1.0
  O  O12  1  0.343  0.500  0.133  1.0
  O  O13  1  0.343  0.500  0.867  1.0
  O  O14  1  0.657  0.000  0.367  1.0
  O  O15  1  0.657  0.000  0.633  1.0
  O  O16  1  0.678  0.500  0.345  1.0
  O  O17  1  0.678  0.500  0.655  1.0
  O  O18  1  0.322  0.000  0.155  1.0
  O  O19  1  0.322  0.000  0.845  1.0
  O  O20  1  0.168  0.211  0.377  1.0
  O  O21  1  0.168  0.789  0.623  1.0
  O  O22  1  0.832  0.711  0.123  1.0
  O  O23  1  0.832  0.289  0.877  1.0
  O  O24  1  0.832  0.289  0.123  1.0
  O  O25  1  0.832  0.711  0.877  1.0
  O  O26  1  0.168  0.789  0.377  1.0
  O  O27  1  0.168  0.211  0.623  1.0
[/CIF]
.
The structure described by CaSb2O4 is Ilmenite-like structured and crystallizes in the orthorhombic Pmmn space group. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded to two equivalent O(1) and four equivalent O(3) atoms to form distorted CaO6 pentagonal pyramids that share edges with four equivalent Sb(2)O6 octahedra. In the second Ca site, Ca(2) is bonded in a 6-coordinate geometry to two equivalent O(2) and four equivalent O(3) atoms. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), and two equivalent O(3) atoms. In the second Sb site, Sb(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form SbO6 octahedra that share edges with two equivalent Sb(2)O6 octahedra and edges with two equivalent Ca(1)O6 pentagonal pyramids. There are three inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Ca(1), one Sb(1), and two equivalent Sb(2) atoms. In the second O site, O(2) is bonded to one Ca(2), one Sb(1), and two equivalent Sb(2) atoms to form OCaSb3 trigonal pyramids that share corners with three equivalent O(2)CaSb3 trigonal pyramids, corners with six equivalent O(3)Ca2Sb2 trigonal pyramids, and edges with two equivalent O(3)Ca2Sb2 trigonal pyramids. In the third O site, O(3) is bonded to one Ca(1), one Ca(2), one Sb(1), and one Sb(2) atom to form distorted OCa2Sb2 trigonal pyramids that share corners with three equivalent O(2)CaSb3 trigonal pyramids, corners with four equivalent O(3)Ca2Sb2 trigonal pyramids,  an edgeedge with one O(2)CaSb3 trigonal pyramid, and edges with two equivalent O(3)Ca2Sb2 trigonal pyramids. is represented by the CIF card [CIF]
data_Ca(SbO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.769
_cell_length_b   6.869
_cell_length_c   12.138
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   481.014
_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
  Ca  Ca0  1  0.369  0.000  0.500  1.0
  Ca  Ca1  1  0.631  0.500  0.000  1.0
  Ca  Ca2  1  0.041  0.000  0.000  1.0
  Ca  Ca3  1  0.959  0.500  0.500  1.0
  Sb  Sb4  1  0.002  0.500  0.208  1.0
  Sb  Sb5  1  0.002  0.500  0.792  1.0
  Sb  Sb6  1  0.998  0.000  0.292  1.0
  Sb  Sb7  1  0.998  0.000  0.708  1.0
  Sb  Sb8  1  0.500  0.250  0.250  1.0
  Sb  Sb9  1  0.500  0.750  0.750  1.0
  Sb  Sb10  1  0.500  0.750  0.250  1.0
  Sb  Sb11  1  0.500  0.250  0.750  1.0
  O  O12  1  0.343  0.500  0.133  1.0
  O  O13  1  0.343  0.500  0.867  1.0
  O  O14  1  0.657  0.000  0.367  1.0
  O  O15  1  0.657  0.000  0.633  1.0
  O  O16  1  0.678  0.500  0.345  1.0
  O  O17  1  0.678  0.500  0.655  1.0
  O  O18  1  0.322  0.000  0.155  1.0
  O  O19  1  0.322  0.000  0.845  1.0
  O  O20  1  0.168  0.211  0.377  1.0
  O  O21  1  0.168  0.789  0.623  1.0
  O  O22  1  0.832  0.711  0.123  1.0
  O  O23  1  0.832  0.289  0.877  1.0
  O  O24  1  0.832  0.289  0.123  1.0
  O  O25  1  0.832  0.711  0.877  1.0
  O  O26  1  0.168  0.789  0.377  1.0
  O  O27  1  0.168  0.211  0.623  1.0
[/CIF]
.