The structure described by SrCrZn(PO4)2 crystallizes in the triclinic P-1 space group. Sr(1) is bonded in a 8-coordinate geometry to one O(2), one O(3), one O(4), one O(8), two equivalent O(1), and two equivalent O(6) atoms. Cr(1) is bonded to one O(3), one O(4), one O(5), one O(7), and two equivalent O(8) atoms to form distorted CrO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, corners with three equivalent Zn(1)O4 trigonal pyramids,  an edgeedge with one Cr(1)O6 octahedra, and  an edgeedge with one P(2)O4 tetrahedra. Zn(1) is bonded to one O(2), one O(4), one O(5), and one O(7) atom to form distorted ZnO4 trigonal pyramids that share corners with three equivalent Cr(1)O6 octahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 59-86°. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(3), and one O(7) atom to form PO4 tetrahedra that share corners with two equivalent Cr(1)O6 octahedra and corners with two equivalent Zn(1)O4 trigonal pyramids. The corner-sharing octahedral tilt angles range from 56-57°. In the second P site, P(2) is bonded to one O(4), one O(5), one O(6), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Zn(1)O4 trigonal pyramids, and  an edgeedge with one Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-64°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Sr(1) and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one 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 Sr(1), one Cr(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Sr(1), one Cr(1), one Zn(1), and one P(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Cr(1), one Zn(1), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to two equivalent Sr(1) and one P(2) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Cr(1), one Zn(1), and one P(1) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Sr(1), two equivalent Cr(1), and one P(2) atom. is represented by the CIF file [CIF]
data_SrZnCr(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.610
_cell_length_b   6.959
_cell_length_c   9.400
_cell_angle_alpha   109.396
_cell_angle_beta   102.656
_cell_angle_gamma   98.796
_symmetry_Int_Tables_number   1
_cell_volume   327.423
_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
  Sr  Sr0  1  0.253  0.800  0.053  1.0
  Sr  Sr1  1  0.747  0.200  0.947  1.0
  Zn  Zn2  1  0.996  0.380  0.641  1.0
  Zn  Zn3  1  0.004  0.620  0.359  1.0
  Cr  Cr4  1  0.636  0.840  0.547  1.0
  Cr  Cr5  1  0.364  0.160  0.453  1.0
  P  P6  1  0.390  0.421  0.232  1.0
  P  P7  1  0.610  0.579  0.768  1.0
  P  P8  1  0.835  0.020  0.296  1.0
  P  P9  1  0.165  0.980  0.704  1.0
  O  O10  1  0.809  0.564  0.903  1.0
  O  O11  1  0.661  0.479  0.217  1.0
  O  O12  1  0.659  0.798  0.758  1.0
  O  O13  1  0.948  0.103  0.688  1.0
  O  O14  1  0.339  0.521  0.783  1.0
  O  O15  1  0.038  0.747  0.589  1.0
  O  O16  1  0.962  0.253  0.411  1.0
  O  O17  1  0.266  0.004  0.874  1.0
  O  O18  1  0.341  0.202  0.242  1.0
  O  O19  1  0.734  0.996  0.126  1.0
  O  O20  1  0.191  0.436  0.097  1.0
  O  O21  1  0.358  0.582  0.389  1.0
  O  O22  1  0.642  0.418  0.611  1.0
  O  O23  1  0.618  0.925  0.351  1.0
  O  O24  1  0.052  0.897  0.312  1.0
  O  O25  1  0.382  0.075  0.649  1.0
[/CIF]
.
The structure described by SrCrZn(PO4)2 crystallizes in the triclinic P-1 space group. Sr(1) is bonded in a 8-coordinate geometry to one O(2), one O(3), one O(4), one O(8), two equivalent O(1), and two equivalent O(6) atoms. Cr(1) is bonded to one O(3), one O(4), one O(5), one O(7), and two equivalent O(8) atoms to form distorted CrO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, corners with three equivalent Zn(1)O4 trigonal pyramids,  an edgeedge with one Cr(1)O6 octahedra, and  an edgeedge with one P(2)O4 tetrahedra. Zn(1) is bonded to one O(2), one O(4), one O(5), and one O(7) atom to form distorted ZnO4 trigonal pyramids that share corners with three equivalent Cr(1)O6 octahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 59-86°. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(3), and one O(7) atom to form PO4 tetrahedra that share corners with two equivalent Cr(1)O6 octahedra and corners with two equivalent Zn(1)O4 trigonal pyramids. The corner-sharing octahedral tilt angles range from 56-57°. In the second P site, P(2) is bonded to one O(4), one O(5), one O(6), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Zn(1)O4 trigonal pyramids, and  an edgeedge with one Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-64°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Sr(1) and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one 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 Sr(1), one Cr(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Sr(1), one Cr(1), one Zn(1), and one P(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Cr(1), one Zn(1), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to two equivalent Sr(1) and one P(2) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Cr(1), one Zn(1), and one P(1) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Sr(1), two equivalent Cr(1), and one P(2) atom. is represented by the CIF file [CIF]
data_SrZnCr(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.610
_cell_length_b   6.959
_cell_length_c   9.400
_cell_angle_alpha   109.396
_cell_angle_beta   102.656
_cell_angle_gamma   98.796
_symmetry_Int_Tables_number   1
_cell_volume   327.423
_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
  Sr  Sr0  1  0.253  0.800  0.053  1.0
  Sr  Sr1  1  0.747  0.200  0.947  1.0
  Zn  Zn2  1  0.996  0.380  0.641  1.0
  Zn  Zn3  1  0.004  0.620  0.359  1.0
  Cr  Cr4  1  0.636  0.840  0.547  1.0
  Cr  Cr5  1  0.364  0.160  0.453  1.0
  P  P6  1  0.390  0.421  0.232  1.0
  P  P7  1  0.610  0.579  0.768  1.0
  P  P8  1  0.835  0.020  0.296  1.0
  P  P9  1  0.165  0.980  0.704  1.0
  O  O10  1  0.809  0.564  0.903  1.0
  O  O11  1  0.661  0.479  0.217  1.0
  O  O12  1  0.659  0.798  0.758  1.0
  O  O13  1  0.948  0.103  0.688  1.0
  O  O14  1  0.339  0.521  0.783  1.0
  O  O15  1  0.038  0.747  0.589  1.0
  O  O16  1  0.962  0.253  0.411  1.0
  O  O17  1  0.266  0.004  0.874  1.0
  O  O18  1  0.341  0.202  0.242  1.0
  O  O19  1  0.734  0.996  0.126  1.0
  O  O20  1  0.191  0.436  0.097  1.0
  O  O21  1  0.358  0.582  0.389  1.0
  O  O22  1  0.642  0.418  0.611  1.0
  O  O23  1  0.618  0.925  0.351  1.0
  O  O24  1  0.052  0.897  0.312  1.0
  O  O25  1  0.382  0.075  0.649  1.0
[/CIF]
.