The structure described by Sr2CaZn2Sn2(PO4)4 crystallizes in the triclinic P-1 space group. Sr(1) is bonded in a 7-coordinate geometry to one O(6), one O(7), one O(8), two equivalent O(1), and two equivalent O(2) atoms. Ca(1) is bonded in a distorted hexagonal planar geometry to two equivalent O(1), two equivalent O(3), and two equivalent O(6) atoms. Zn(1) is bonded in a 3-coordinate geometry to one Sn(1), one O(2), one O(4), and one O(5) atom. Sn(1) is bonded in a 4-coordinate geometry to one Zn(1), one O(3), one O(5), and one O(7) atom. There are two inequivalent P sites. In the first P site, P(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(7) atom. In the second P site, P(2) is bonded in a tetrahedral geometry to one O(4), one O(5), one O(6), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Sr(1), one Ca(1), and one P(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Sr(1), one Zn(1), and one P(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Ca(1), one Sn(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Zn(1) and one P(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Zn(1), one Sn(1), and one P(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Sr(1), one Ca(1), and one P(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Sr(1), one Sn(1), and one P(1) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Sr(1) and one P(2) atom. is represented by the CIF card [CIF]
data_Sr2CaZn2Sn2(PO4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.352
_cell_length_b   7.965
_cell_length_c   9.619
_cell_angle_alpha   103.968
_cell_angle_beta   112.022
_cell_angle_gamma   104.032
_symmetry_Int_Tables_number   1
_cell_volume   406.728
_cell_formula_units_Z   1
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
  Sr  Sr0  1  0.255  0.631  0.950  1.0
  Sr  Sr1  1  0.745  0.369  0.050  1.0
  Ca  Ca2  1  0.000  0.000  0.000  1.0
  Zn  Zn3  1  0.158  0.248  0.579  1.0
  Zn  Zn4  1  0.842  0.752  0.421  1.0
  Sn  Sn5  1  0.525  0.820  0.515  1.0
  Sn  Sn6  1  0.475  0.180  0.485  1.0
  P  P7  1  0.321  0.415  0.206  1.0
  P  P8  1  0.679  0.585  0.794  1.0
  P  P9  1  0.738  0.033  0.262  1.0
  P  P10  1  0.262  0.967  0.738  1.0
  O  O11  1  0.882  0.668  0.973  1.0
  O  O12  1  0.563  0.526  0.207  1.0
  O  O13  1  0.653  0.754  0.746  1.0
  O  O14  1  0.091  0.078  0.693  1.0
  O  O15  1  0.437  0.474  0.793  1.0
  O  O16  1  0.189  0.797  0.576  1.0
  O  O17  1  0.811  0.203  0.424  1.0
  O  O18  1  0.213  0.890  0.859  1.0
  O  O19  1  0.347  0.246  0.254  1.0
  O  O20  1  0.787  0.110  0.141  1.0
  O  O21  1  0.118  0.332  0.027  1.0
  O  O22  1  0.238  0.545  0.305  1.0
  O  O23  1  0.762  0.455  0.695  1.0
  O  O24  1  0.468  0.911  0.199  1.0
  O  O25  1  0.909  0.922  0.307  1.0
  O  O26  1  0.532  0.089  0.801  1.0
[/CIF]
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The structure described by Sr2CaZn2Sn2(PO4)4 crystallizes in the triclinic P-1 space group. Sr(1) is bonded in a 7-coordinate geometry to one O(6), one O(7), one O(8), two equivalent O(1), and two equivalent O(2) atoms. Ca(1) is bonded in a distorted hexagonal planar geometry to two equivalent O(1), two equivalent O(3), and two equivalent O(6) atoms. Zn(1) is bonded in a 3-coordinate geometry to one Sn(1), one O(2), one O(4), and one O(5) atom. Sn(1) is bonded in a 4-coordinate geometry to one Zn(1), one O(3), one O(5), and one O(7) atom. There are two inequivalent P sites. In the first P site, P(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(7) atom. In the second P site, P(2) is bonded in a tetrahedral geometry to one O(4), one O(5), one O(6), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Sr(1), one Ca(1), and one P(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Sr(1), one Zn(1), and one P(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Ca(1), one Sn(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Zn(1) and one P(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Zn(1), one Sn(1), and one P(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Sr(1), one Ca(1), and one P(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Sr(1), one Sn(1), and one P(1) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Sr(1) and one P(2) atom. is represented by the CIF card [CIF]
data_Sr2CaZn2Sn2(PO4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.352
_cell_length_b   7.965
_cell_length_c   9.619
_cell_angle_alpha   103.968
_cell_angle_beta   112.022
_cell_angle_gamma   104.032
_symmetry_Int_Tables_number   1
_cell_volume   406.728
_cell_formula_units_Z   1
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
  Sr  Sr0  1  0.255  0.631  0.950  1.0
  Sr  Sr1  1  0.745  0.369  0.050  1.0
  Ca  Ca2  1  0.000  0.000  0.000  1.0
  Zn  Zn3  1  0.158  0.248  0.579  1.0
  Zn  Zn4  1  0.842  0.752  0.421  1.0
  Sn  Sn5  1  0.525  0.820  0.515  1.0
  Sn  Sn6  1  0.475  0.180  0.485  1.0
  P  P7  1  0.321  0.415  0.206  1.0
  P  P8  1  0.679  0.585  0.794  1.0
  P  P9  1  0.738  0.033  0.262  1.0
  P  P10  1  0.262  0.967  0.738  1.0
  O  O11  1  0.882  0.668  0.973  1.0
  O  O12  1  0.563  0.526  0.207  1.0
  O  O13  1  0.653  0.754  0.746  1.0
  O  O14  1  0.091  0.078  0.693  1.0
  O  O15  1  0.437  0.474  0.793  1.0
  O  O16  1  0.189  0.797  0.576  1.0
  O  O17  1  0.811  0.203  0.424  1.0
  O  O18  1  0.213  0.890  0.859  1.0
  O  O19  1  0.347  0.246  0.254  1.0
  O  O20  1  0.787  0.110  0.141  1.0
  O  O21  1  0.118  0.332  0.027  1.0
  O  O22  1  0.238  0.545  0.305  1.0
  O  O23  1  0.762  0.455  0.695  1.0
  O  O24  1  0.468  0.911  0.199  1.0
  O  O25  1  0.909  0.922  0.307  1.0
  O  O26  1  0.532  0.089  0.801  1.0
[/CIF]
.