The structure described by Ni4Tl(PO4)3 crystallizes in the orthorhombic Cmc2_1 space group. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one O(2), one O(3), one O(5), one O(8), and one O(9) atom to form NiO5 square pyramids that share  a cornercorner with one P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra,  a cornercorner with one Ni(2)O5 trigonal bipyramid, and edges with two equivalent Ni(1)O5 square pyramids. In the second Ni site, Ni(2) is bonded to one O(1), one O(4), one O(8), and two equivalent O(6) atoms to form NiO5 trigonal bipyramids that share corners with two equivalent Ni(1)O5 square pyramids,  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. In the third Ni site, Ni(3) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(2), and two equivalent O(7) atoms. Tl(1) is bonded in a 4-coordinate geometry to two equivalent O(2) and two equivalent O(7) atoms. There are three inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(4), and two equivalent O(2) atoms to form PO4 tetrahedra that share corners with two equivalent Ni(1)O5 square pyramids and corners with two equivalent Ni(2)O5 trigonal bipyramids. In the second P site, P(2) is bonded to one O(3), one O(9), and two equivalent O(6) atoms to form PO4 tetrahedra that share corners with four equivalent Ni(1)O5 square pyramids and corners with two equivalent Ni(2)O5 trigonal bipyramids. In the third P site, P(3) is bonded to one O(5), one O(8), and two equivalent O(7) atoms to form PO4 tetrahedra that share corners with four equivalent Ni(1)O5 square pyramids and  a cornercorner with one Ni(2)O5 trigonal bipyramid. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Ni(2) and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Ni(1), one Ni(3), one Tl(1), and one P(1) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Ni(3), two equivalent Ni(1), and one P(2) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Ni(2) and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to two equivalent Ni(1) and one P(3) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Ni(2) and one P(2) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Ni(3), one Tl(1), and one P(3) atom. In the eighth O site, O(8) is bonded in a tetrahedral geometry to one Ni(2), two equivalent Ni(1), and one P(3) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to two equivalent Ni(1) and one P(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_TlNi4(PO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.753
_cell_length_b   8.753
_cell_length_c   9.768
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   137.651
_symmetry_Int_Tables_number   1
_cell_volume   504.123
_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
  Tl  Tl0  1  0.974  0.026  0.465  1.0
  Tl  Tl1  1  0.026  0.974  0.965  1.0
  Ni  Ni2  1  0.047  0.454  0.998  1.0
  Ni  Ni3  1  0.953  0.546  0.498  1.0
  Ni  Ni4  1  0.622  0.378  0.198  1.0
  Ni  Ni5  1  0.378  0.622  0.698  1.0
  Ni  Ni6  1  0.454  0.047  0.498  1.0
  Ni  Ni7  1  0.546  0.953  0.998  1.0
  Ni  Ni8  1  0.380  0.620  0.233  1.0
  Ni  Ni9  1  0.620  0.380  0.733  1.0
  P  P10  1  0.534  0.466  0.487  1.0
  P  P11  1  0.180  0.820  0.212  1.0
  P  P12  1  0.820  0.180  0.712  1.0
  P  P13  1  0.200  0.800  0.786  1.0
  P  P14  1  0.466  0.534  0.987  1.0
  P  P15  1  0.800  0.200  0.286  1.0
  O  O16  1  0.471  0.529  0.829  1.0
  O  O17  1  0.225  0.393  0.053  1.0
  O  O18  1  0.775  0.607  0.553  1.0
  O  O19  1  0.732  0.268  0.636  1.0
  O  O20  1  0.555  0.445  0.032  1.0
  O  O21  1  0.219  0.781  0.629  1.0
  O  O22  1  0.938  0.669  0.165  1.0
  O  O23  1  0.331  0.062  0.165  1.0
  O  O24  1  0.607  0.775  0.053  1.0
  O  O25  1  0.669  0.938  0.665  1.0
  O  O26  1  0.445  0.555  0.532  1.0
  O  O27  1  0.635  0.952  0.331  1.0
  O  O28  1  0.952  0.635  0.831  1.0
  O  O29  1  0.062  0.331  0.665  1.0
  O  O30  1  0.365  0.048  0.831  1.0
  O  O31  1  0.289  0.711  0.859  1.0
  O  O32  1  0.711  0.289  0.359  1.0
  O  O33  1  0.393  0.225  0.553  1.0
  O  O34  1  0.194  0.806  0.370  1.0
  O  O35  1  0.529  0.471  0.329  1.0
  O  O36  1  0.806  0.194  0.870  1.0
  O  O37  1  0.048  0.365  0.331  1.0
  O  O38  1  0.268  0.732  0.136  1.0
  O  O39  1  0.781  0.219  0.129  1.0
[/CIF]
.
The structure described by Ni4Tl(PO4)3 crystallizes in the orthorhombic Cmc2_1 space group. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one O(2), one O(3), one O(5), one O(8), and one O(9) atom to form NiO5 square pyramids that share  a cornercorner with one P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra,  a cornercorner with one Ni(2)O5 trigonal bipyramid, and edges with two equivalent Ni(1)O5 square pyramids. In the second Ni site, Ni(2) is bonded to one O(1), one O(4), one O(8), and two equivalent O(6) atoms to form NiO5 trigonal bipyramids that share corners with two equivalent Ni(1)O5 square pyramids,  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. In the third Ni site, Ni(3) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(2), and two equivalent O(7) atoms. Tl(1) is bonded in a 4-coordinate geometry to two equivalent O(2) and two equivalent O(7) atoms. There are three inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(4), and two equivalent O(2) atoms to form PO4 tetrahedra that share corners with two equivalent Ni(1)O5 square pyramids and corners with two equivalent Ni(2)O5 trigonal bipyramids. In the second P site, P(2) is bonded to one O(3), one O(9), and two equivalent O(6) atoms to form PO4 tetrahedra that share corners with four equivalent Ni(1)O5 square pyramids and corners with two equivalent Ni(2)O5 trigonal bipyramids. In the third P site, P(3) is bonded to one O(5), one O(8), and two equivalent O(7) atoms to form PO4 tetrahedra that share corners with four equivalent Ni(1)O5 square pyramids and  a cornercorner with one Ni(2)O5 trigonal bipyramid. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Ni(2) and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Ni(1), one Ni(3), one Tl(1), and one P(1) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Ni(3), two equivalent Ni(1), and one P(2) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Ni(2) and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to two equivalent Ni(1) and one P(3) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Ni(2) and one P(2) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Ni(3), one Tl(1), and one P(3) atom. In the eighth O site, O(8) is bonded in a tetrahedral geometry to one Ni(2), two equivalent Ni(1), and one P(3) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to two equivalent Ni(1) and one P(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_TlNi4(PO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.753
_cell_length_b   8.753
_cell_length_c   9.768
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   137.651
_symmetry_Int_Tables_number   1
_cell_volume   504.123
_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
  Tl  Tl0  1  0.974  0.026  0.465  1.0
  Tl  Tl1  1  0.026  0.974  0.965  1.0
  Ni  Ni2  1  0.047  0.454  0.998  1.0
  Ni  Ni3  1  0.953  0.546  0.498  1.0
  Ni  Ni4  1  0.622  0.378  0.198  1.0
  Ni  Ni5  1  0.378  0.622  0.698  1.0
  Ni  Ni6  1  0.454  0.047  0.498  1.0
  Ni  Ni7  1  0.546  0.953  0.998  1.0
  Ni  Ni8  1  0.380  0.620  0.233  1.0
  Ni  Ni9  1  0.620  0.380  0.733  1.0
  P  P10  1  0.534  0.466  0.487  1.0
  P  P11  1  0.180  0.820  0.212  1.0
  P  P12  1  0.820  0.180  0.712  1.0
  P  P13  1  0.200  0.800  0.786  1.0
  P  P14  1  0.466  0.534  0.987  1.0
  P  P15  1  0.800  0.200  0.286  1.0
  O  O16  1  0.471  0.529  0.829  1.0
  O  O17  1  0.225  0.393  0.053  1.0
  O  O18  1  0.775  0.607  0.553  1.0
  O  O19  1  0.732  0.268  0.636  1.0
  O  O20  1  0.555  0.445  0.032  1.0
  O  O21  1  0.219  0.781  0.629  1.0
  O  O22  1  0.938  0.669  0.165  1.0
  O  O23  1  0.331  0.062  0.165  1.0
  O  O24  1  0.607  0.775  0.053  1.0
  O  O25  1  0.669  0.938  0.665  1.0
  O  O26  1  0.445  0.555  0.532  1.0
  O  O27  1  0.635  0.952  0.331  1.0
  O  O28  1  0.952  0.635  0.831  1.0
  O  O29  1  0.062  0.331  0.665  1.0
  O  O30  1  0.365  0.048  0.831  1.0
  O  O31  1  0.289  0.711  0.859  1.0
  O  O32  1  0.711  0.289  0.359  1.0
  O  O33  1  0.393  0.225  0.553  1.0
  O  O34  1  0.194  0.806  0.370  1.0
  O  O35  1  0.529  0.471  0.329  1.0
  O  O36  1  0.806  0.194  0.870  1.0
  O  O37  1  0.048  0.365  0.331  1.0
  O  O38  1  0.268  0.732  0.136  1.0
  O  O39  1  0.781  0.219  0.129  1.0
[/CIF]
.