The material structure described by SrNiO3 is (Cubic) Perovskite structured and crystallizes in the triclinic P-1 space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to two equivalent O(1), two equivalent O(2), two equivalent O(4), two equivalent O(6), two equivalent O(7), and two equivalent O(8) atoms to form SrO12 cuboctahedra that share corners with six equivalent Sr(1)O12 cuboctahedra, corners with six equivalent Sr(3)O12 cuboctahedra, faces with six equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Ni(2)O6 octahedra, and faces with six equivalent Ni(1)O6 octahedra. In the second Sr site, Sr(2) is bonded to one O(1), one O(3), one O(5), one O(6), one O(7), one O(9), two equivalent O(2), two equivalent O(4), and two equivalent O(8) atoms to form SrO12 cuboctahedra that share corners with twelve equivalent Sr(2)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, faces with three equivalent Sr(3)O12 cuboctahedra, faces with four equivalent Ni(1)O6 octahedra, and faces with four equivalent Ni(2)O6 octahedra. In the third Sr site, Sr(3) is bonded to two equivalent O(2), two equivalent O(3), two equivalent O(4), two equivalent O(5), two equivalent O(8), and two equivalent O(9) atoms to form SrO12 cuboctahedra that share corners with six equivalent Sr(1)O12 cuboctahedra, corners with six equivalent Sr(3)O12 cuboctahedra, faces with six equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Ni(1)O6 octahedra, and faces with six equivalent Ni(2)O6 octahedra. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one O(1), one O(2), one O(4), one O(6), one O(7), and one O(8) atom to form NiO6 octahedra that share corners with three equivalent Ni(1)O6 octahedra, corners with three equivalent Ni(2)O6 octahedra,  a faceface with one Sr(3)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, and faces with four equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-4°. In the second Ni site, Ni(2) is bonded to one O(2), one O(3), one O(4), one O(5), one O(8), and one O(9) atom to form NiO6 octahedra that share corners with three equivalent Ni(1)O6 octahedra, corners with three equivalent Ni(2)O6 octahedra,  a faceface with one Sr(1)O12 cuboctahedra, faces with three equivalent Sr(3)O12 cuboctahedra, and faces with four equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-4°. There are nine inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Ni(1) atoms to form a mixture of distorted edge, face, and corner-sharing OSr4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-62°. In the second O site, O(2) is bonded to one Sr(1), one Sr(3), two equivalent Sr(2), one Ni(1), and one Ni(2) atom to form a mixture of distorted edge, face, and corner-sharing OSr4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the third O site, O(3) is bonded to two equivalent Sr(2), two equivalent Sr(3), and two equivalent Ni(2) atoms to form a mixture of distorted edge, face, and corner-sharing OSr4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the fourth O site, O(4) is bonded to one Sr(1), one Sr(3), two equivalent Sr(2), one Ni(1), and one Ni(2) atom to form a mixture of distorted edge, face, and corner-sharing OSr4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-62°. In the fifth O site, O(5) is bonded to two equivalent Sr(2), two equivalent Sr(3), and two equivalent Ni(2) atoms to form a mixture of distorted edge, face, and corner-sharing OSr4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the sixth O site, O(6) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Ni(1) atoms to form a mixture of distorted edge, face, and corner-sharing OSr4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the seventh O site, O(7) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Ni(1) atoms to form a mixture of distorted edge, face, and corner-sharing OSr4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the eighth O site, O(8) is bonded to one Sr(1), one Sr(3), two equivalent Sr(2), one Ni(1), and one Ni(2) atom to form a mixture of distorted edge, face, and corner-sharing OSr4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-62°. In the ninth O site, O(9) is bonded to two equivalent Sr(2), two equivalent Sr(3), and two equivalent Ni(2) atoms to form a mixture of distorted edge, face, and corner-sharing OSr4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. is represented by the CIF file [CIF]
data_SrNiO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.903
_cell_length_b   3.906
_cell_length_c   3.911
_cell_angle_alpha   89.484
_cell_angle_beta   90.453
_cell_angle_gamma   90.315
_symmetry_Int_Tables_number   1
_cell_volume   59.620
_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
  Ni  Ni0  1  0.500  0.500  1.000  1.0
  O  O1  1  0.500  0.500  0.500  1.0
  O  O2  1  1.000  0.500  1.000  1.0
  O  O3  1  0.500  0.000  1.000  1.0
  Sr  Sr4  1  1.000  0.000  0.500  1.0
[/CIF]
.
The material structure described by SrNiO3 is (Cubic) Perovskite structured and crystallizes in the triclinic P-1 space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to two equivalent O(1), two equivalent O(2), two equivalent O(4), two equivalent O(6), two equivalent O(7), and two equivalent O(8) atoms to form SrO12 cuboctahedra that share corners with six equivalent Sr(1)O12 cuboctahedra, corners with six equivalent Sr(3)O12 cuboctahedra, faces with six equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Ni(2)O6 octahedra, and faces with six equivalent Ni(1)O6 octahedra. In the second Sr site, Sr(2) is bonded to one O(1), one O(3), one O(5), one O(6), one O(7), one O(9), two equivalent O(2), two equivalent O(4), and two equivalent O(8) atoms to form SrO12 cuboctahedra that share corners with twelve equivalent Sr(2)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, faces with three equivalent Sr(3)O12 cuboctahedra, faces with four equivalent Ni(1)O6 octahedra, and faces with four equivalent Ni(2)O6 octahedra. In the third Sr site, Sr(3) is bonded to two equivalent O(2), two equivalent O(3), two equivalent O(4), two equivalent O(5), two equivalent O(8), and two equivalent O(9) atoms to form SrO12 cuboctahedra that share corners with six equivalent Sr(1)O12 cuboctahedra, corners with six equivalent Sr(3)O12 cuboctahedra, faces with six equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Ni(1)O6 octahedra, and faces with six equivalent Ni(2)O6 octahedra. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one O(1), one O(2), one O(4), one O(6), one O(7), and one O(8) atom to form NiO6 octahedra that share corners with three equivalent Ni(1)O6 octahedra, corners with three equivalent Ni(2)O6 octahedra,  a faceface with one Sr(3)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, and faces with four equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-4°. In the second Ni site, Ni(2) is bonded to one O(2), one O(3), one O(4), one O(5), one O(8), and one O(9) atom to form NiO6 octahedra that share corners with three equivalent Ni(1)O6 octahedra, corners with three equivalent Ni(2)O6 octahedra,  a faceface with one Sr(1)O12 cuboctahedra, faces with three equivalent Sr(3)O12 cuboctahedra, and faces with four equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-4°. There are nine inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Ni(1) atoms to form a mixture of distorted edge, face, and corner-sharing OSr4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-62°. In the second O site, O(2) is bonded to one Sr(1), one Sr(3), two equivalent Sr(2), one Ni(1), and one Ni(2) atom to form a mixture of distorted edge, face, and corner-sharing OSr4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the third O site, O(3) is bonded to two equivalent Sr(2), two equivalent Sr(3), and two equivalent Ni(2) atoms to form a mixture of distorted edge, face, and corner-sharing OSr4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the fourth O site, O(4) is bonded to one Sr(1), one Sr(3), two equivalent Sr(2), one Ni(1), and one Ni(2) atom to form a mixture of distorted edge, face, and corner-sharing OSr4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-62°. In the fifth O site, O(5) is bonded to two equivalent Sr(2), two equivalent Sr(3), and two equivalent Ni(2) atoms to form a mixture of distorted edge, face, and corner-sharing OSr4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the sixth O site, O(6) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Ni(1) atoms to form a mixture of distorted edge, face, and corner-sharing OSr4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the seventh O site, O(7) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Ni(1) atoms to form a mixture of distorted edge, face, and corner-sharing OSr4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the eighth O site, O(8) is bonded to one Sr(1), one Sr(3), two equivalent Sr(2), one Ni(1), and one Ni(2) atom to form a mixture of distorted edge, face, and corner-sharing OSr4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-62°. In the ninth O site, O(9) is bonded to two equivalent Sr(2), two equivalent Sr(3), and two equivalent Ni(2) atoms to form a mixture of distorted edge, face, and corner-sharing OSr4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. is represented by the CIF file [CIF]
data_SrNiO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.903
_cell_length_b   3.906
_cell_length_c   3.911
_cell_angle_alpha   89.484
_cell_angle_beta   90.453
_cell_angle_gamma   90.315
_symmetry_Int_Tables_number   1
_cell_volume   59.620
_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
  Ni  Ni0  1  0.500  0.500  1.000  1.0
  O  O1  1  0.500  0.500  0.500  1.0
  O  O2  1  1.000  0.500  1.000  1.0
  O  O3  1  0.500  0.000  1.000  1.0
  Sr  Sr4  1  1.000  0.000  0.500  1.0
[/CIF]
.