The crystal structure described by RbSb2PO8 crystallizes in the monoclinic Cc space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 10-coordinate geometry to one O(1), one O(10), one O(13), one O(14), one O(16), one O(3), one O(4), one O(5), one O(7), and one O(9) atom. In the second Rb site, Rb(2) is bonded in a 10-coordinate geometry to one O(10), one O(11), one O(12), one O(13), one O(15), one O(2), one O(5), one O(6), one O(8), and one O(9) atom. There are four inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(10), one O(14), one O(2), one O(4), one O(5), and one O(8) atom to form SbO6 octahedra that share  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Sb(4)O6 octahedra, corners with two equivalent Sb(3)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-50°. In the second Sb site, Sb(2) is bonded to one O(13), one O(15), one O(2), one O(6), one O(7), and one O(9) atom to form SbO6 octahedra that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Sb(3)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, and  an edgeedge with one Sb(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. In the third Sb site, Sb(3) is bonded to one O(1), one O(10), one O(12), one O(15), one O(3), and one O(5) atom to form SbO6 octahedra that share  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Sb(4)O6 octahedra, corners with two equivalent Sb(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-50°. In the fourth Sb site, Sb(4) is bonded to one O(11), one O(13), one O(14), one O(16), one O(3), and one O(9) atom to form SbO6 octahedra that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Sb(3)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, and  an edgeedge with one Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(12), one O(16), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Sb(3)O6 octahedra, and  a cornercorner with one Sb(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 25-53°. In the second P site, P(2) is bonded to one O(1), one O(11), one O(4), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Sb(3)O6 octahedra, and  a cornercorner with one Sb(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 25-53°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Rb(1), one Sb(3), and one P(2) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Rb(2), one Sb(1), and one Sb(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Rb(1), one Sb(3), and one Sb(4) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Rb(1), one Sb(1), and one P(2) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one Rb(2), one Sb(1), and one Sb(3) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one Rb(2), one Sb(2), and one P(2) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one Sb(2), and one P(1) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Rb(2), one Sb(1), and one P(1) atom. In the ninth O site, O(9) is bonded in a 2-coordinate geometry to one Rb(1), one Rb(2), one Sb(2), and one Sb(4) atom. In the tenth O site, O(10) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one Rb(2), one Sb(1), and one Sb(3) atom. In the eleventh O site, O(11) is bonded in a distorted bent 150 degrees geometry to one Rb(2), one Sb(4), and one P(2) atom. In the twelfth O site, O(12) is bonded in a 2-coordinate geometry to one Rb(2), one Sb(3), and one P(1) atom. In the thirteenth O site, O(13) is bonded in a 2-coordinate geometry to one Rb(1), one Rb(2), one Sb(2), and one Sb(4) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one Rb(1), one Sb(1), and one Sb(4) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one Rb(2), one Sb(2), and one Sb(3) atom. In the sixteenth O site, O(16) is bonded in a 2-coordinate geometry to one Rb(1), one Sb(4), and one P(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_RbSb2PO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.300
_cell_length_b   7.300
_cell_length_c   15.266
_cell_angle_alpha   84.285
_cell_angle_beta   84.285
_cell_angle_gamma   59.363
_symmetry_Int_Tables_number   1
_cell_volume   695.417
_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
  Rb  Rb0  1  0.681  0.923  0.920  1.0
  Rb  Rb1  1  0.923  0.681  0.420  1.0
  Rb  Rb2  1  0.741  0.980  0.647  1.0
  Rb  Rb3  1  0.980  0.741  0.147  1.0
  Sb  Sb4  1  0.211  0.957  0.785  1.0
  Sb  Sb5  1  0.957  0.211  0.285  1.0
  Sb  Sb6  1  0.378  0.642  0.595  1.0
  Sb  Sb7  1  0.642  0.378  0.095  1.0
  Sb  Sb8  1  0.709  0.454  0.779  1.0
  Sb  Sb9  1  0.454  0.709  0.279  1.0
  Sb  Sb10  1  0.025  0.288  0.969  1.0
  Sb  Sb11  1  0.288  0.025  0.469  1.0
  P  P12  1  0.120  0.345  0.638  1.0
  P  P13  1  0.345  0.120  0.138  1.0
  P  P14  1  0.322  0.545  0.926  1.0
  P  P15  1  0.545  0.322  0.426  1.0
  O  O16  1  0.396  0.493  0.357  1.0
  O  O17  1  0.493  0.396  0.857  1.0
  O  O18  1  0.177  0.811  0.692  1.0
  O  O19  1  0.811  0.177  0.192  1.0
  O  O20  1  0.850  0.491  0.874  1.0
  O  O21  1  0.491  0.850  0.374  1.0
  O  O22  1  0.162  0.762  0.880  1.0
  O  O23  1  0.762  0.162  0.380  1.0
  O  O24  1  0.526  0.770  0.780  1.0
  O  O25  1  0.770  0.526  0.280  1.0
  O  O26  1  0.427  0.582  0.000  1.0
  O  O27  1  0.582  0.427  0.500  1.0
  O  O28  1  0.214  0.482  0.596  1.0
  O  O29  1  0.482  0.214  0.096  1.0
  O  O30  1  0.169  0.272  0.204  1.0
  O  O31  1  0.272  0.169  0.704  1.0
  O  O32  1  0.498  0.833  0.559  1.0
  O  O33  1  0.833  0.498  0.059  1.0
  O  O34  1  0.895  0.139  0.785  1.0
  O  O35  1  0.139  0.895  0.285  1.0
  O  O36  1  0.188  0.447  0.968  1.0
  O  O37  1  0.447  0.188  0.468  1.0
  O  O38  1  0.906  0.504  0.686  1.0
  O  O39  1  0.504  0.906  0.186  1.0
  O  O40  1  0.837  0.166  0.006  1.0
  O  O41  1  0.166  0.837  0.506  1.0
  O  O42  1  0.091  0.242  0.385  1.0
  O  O43  1  0.242  0.091  0.885  1.0
  O  O44  1  0.582  0.423  0.676  1.0
  O  O45  1  0.423  0.582  0.176  1.0
  O  O46  1  0.080  0.242  0.563  1.0
  O  O47  1  0.242  0.080  0.063  1.0
[/CIF]
.
The crystal structure described by RbSb2PO8 crystallizes in the monoclinic Cc space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 10-coordinate geometry to one O(1), one O(10), one O(13), one O(14), one O(16), one O(3), one O(4), one O(5), one O(7), and one O(9) atom. In the second Rb site, Rb(2) is bonded in a 10-coordinate geometry to one O(10), one O(11), one O(12), one O(13), one O(15), one O(2), one O(5), one O(6), one O(8), and one O(9) atom. There are four inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(10), one O(14), one O(2), one O(4), one O(5), and one O(8) atom to form SbO6 octahedra that share  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Sb(4)O6 octahedra, corners with two equivalent Sb(3)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-50°. In the second Sb site, Sb(2) is bonded to one O(13), one O(15), one O(2), one O(6), one O(7), and one O(9) atom to form SbO6 octahedra that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Sb(3)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, and  an edgeedge with one Sb(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. In the third Sb site, Sb(3) is bonded to one O(1), one O(10), one O(12), one O(15), one O(3), and one O(5) atom to form SbO6 octahedra that share  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Sb(4)O6 octahedra, corners with two equivalent Sb(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-50°. In the fourth Sb site, Sb(4) is bonded to one O(11), one O(13), one O(14), one O(16), one O(3), and one O(9) atom to form SbO6 octahedra that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Sb(3)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, and  an edgeedge with one Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(12), one O(16), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Sb(3)O6 octahedra, and  a cornercorner with one Sb(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 25-53°. In the second P site, P(2) is bonded to one O(1), one O(11), one O(4), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Sb(3)O6 octahedra, and  a cornercorner with one Sb(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 25-53°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Rb(1), one Sb(3), and one P(2) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Rb(2), one Sb(1), and one Sb(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Rb(1), one Sb(3), and one Sb(4) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Rb(1), one Sb(1), and one P(2) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one Rb(2), one Sb(1), and one Sb(3) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one Rb(2), one Sb(2), and one P(2) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one Sb(2), and one P(1) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Rb(2), one Sb(1), and one P(1) atom. In the ninth O site, O(9) is bonded in a 2-coordinate geometry to one Rb(1), one Rb(2), one Sb(2), and one Sb(4) atom. In the tenth O site, O(10) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one Rb(2), one Sb(1), and one Sb(3) atom. In the eleventh O site, O(11) is bonded in a distorted bent 150 degrees geometry to one Rb(2), one Sb(4), and one P(2) atom. In the twelfth O site, O(12) is bonded in a 2-coordinate geometry to one Rb(2), one Sb(3), and one P(1) atom. In the thirteenth O site, O(13) is bonded in a 2-coordinate geometry to one Rb(1), one Rb(2), one Sb(2), and one Sb(4) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one Rb(1), one Sb(1), and one Sb(4) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one Rb(2), one Sb(2), and one Sb(3) atom. In the sixteenth O site, O(16) is bonded in a 2-coordinate geometry to one Rb(1), one Sb(4), and one P(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_RbSb2PO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.300
_cell_length_b   7.300
_cell_length_c   15.266
_cell_angle_alpha   84.285
_cell_angle_beta   84.285
_cell_angle_gamma   59.363
_symmetry_Int_Tables_number   1
_cell_volume   695.417
_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
  Rb  Rb0  1  0.681  0.923  0.920  1.0
  Rb  Rb1  1  0.923  0.681  0.420  1.0
  Rb  Rb2  1  0.741  0.980  0.647  1.0
  Rb  Rb3  1  0.980  0.741  0.147  1.0
  Sb  Sb4  1  0.211  0.957  0.785  1.0
  Sb  Sb5  1  0.957  0.211  0.285  1.0
  Sb  Sb6  1  0.378  0.642  0.595  1.0
  Sb  Sb7  1  0.642  0.378  0.095  1.0
  Sb  Sb8  1  0.709  0.454  0.779  1.0
  Sb  Sb9  1  0.454  0.709  0.279  1.0
  Sb  Sb10  1  0.025  0.288  0.969  1.0
  Sb  Sb11  1  0.288  0.025  0.469  1.0
  P  P12  1  0.120  0.345  0.638  1.0
  P  P13  1  0.345  0.120  0.138  1.0
  P  P14  1  0.322  0.545  0.926  1.0
  P  P15  1  0.545  0.322  0.426  1.0
  O  O16  1  0.396  0.493  0.357  1.0
  O  O17  1  0.493  0.396  0.857  1.0
  O  O18  1  0.177  0.811  0.692  1.0
  O  O19  1  0.811  0.177  0.192  1.0
  O  O20  1  0.850  0.491  0.874  1.0
  O  O21  1  0.491  0.850  0.374  1.0
  O  O22  1  0.162  0.762  0.880  1.0
  O  O23  1  0.762  0.162  0.380  1.0
  O  O24  1  0.526  0.770  0.780  1.0
  O  O25  1  0.770  0.526  0.280  1.0
  O  O26  1  0.427  0.582  0.000  1.0
  O  O27  1  0.582  0.427  0.500  1.0
  O  O28  1  0.214  0.482  0.596  1.0
  O  O29  1  0.482  0.214  0.096  1.0
  O  O30  1  0.169  0.272  0.204  1.0
  O  O31  1  0.272  0.169  0.704  1.0
  O  O32  1  0.498  0.833  0.559  1.0
  O  O33  1  0.833  0.498  0.059  1.0
  O  O34  1  0.895  0.139  0.785  1.0
  O  O35  1  0.139  0.895  0.285  1.0
  O  O36  1  0.188  0.447  0.968  1.0
  O  O37  1  0.447  0.188  0.468  1.0
  O  O38  1  0.906  0.504  0.686  1.0
  O  O39  1  0.504  0.906  0.186  1.0
  O  O40  1  0.837  0.166  0.006  1.0
  O  O41  1  0.166  0.837  0.506  1.0
  O  O42  1  0.091  0.242  0.385  1.0
  O  O43  1  0.242  0.091  0.885  1.0
  O  O44  1  0.582  0.423  0.676  1.0
  O  O45  1  0.423  0.582  0.176  1.0
  O  O46  1  0.080  0.242  0.563  1.0
  O  O47  1  0.242  0.080  0.063  1.0
[/CIF]
.