The crystal structure described by SrSm3(NiO4)2 is (La,Ba)CuO4-derived structured and crystallizes in the orthorhombic Amm2 space group. Sr(1) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(3), two equivalent O(4), and four equivalent O(5) atoms. There are three inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 9-coordinate geometry to one O(1), two equivalent O(3), two equivalent O(4), and four equivalent O(5) atoms. In the second Sm site, Sm(2) is bonded in a 9-coordinate geometry to one O(4), two equivalent O(1), two equivalent O(2), and four equivalent O(5) atoms. In the third Sm site, Sm(3) is bonded in a 9-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and four equivalent O(5) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one O(1), one O(4), and four equivalent O(5) atoms to form corner-sharing NiO6 octahedra. The corner-sharing octahedral tilt angles are 7°. In the second Ni site, Ni(2) is bonded to one O(2), one O(3), and four equivalent O(5) atoms to form corner-sharing NiO6 octahedra. The corner-sharing octahedral tilt angles are 7°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one Sm(1), two equivalent Sm(2), two equivalent Sm(3), and one Ni(1) atom. In the second O site, O(2) is bonded to one Sr(1), two equivalent Sm(2), two equivalent Sm(3), and one Ni(2) atom to form distorted OSrSm4Ni octahedra that share  a cornercorner with one O(3)Sr2Sm3Ni octahedra, corners with four equivalent O(2)SrSm4Ni octahedra, corners with twelve equivalent O(5)SrSm3Ni2 octahedra, edges with two equivalent O(3)Sr2Sm3Ni octahedra, edges with two equivalent O(4)Sr2Sm3Ni octahedra, and faces with four equivalent O(5)SrSm3Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-54°. In the third O site, O(3) is bonded to two equivalent Sr(1), one Sm(3), two equivalent Sm(1), and one Ni(2) atom to form distorted OSr2Sm3Ni octahedra that share  a cornercorner with one O(2)SrSm4Ni octahedra, corners with four equivalent O(3)Sr2Sm3Ni octahedra, corners with twelve equivalent O(5)SrSm3Ni2 octahedra, edges with two equivalent O(2)SrSm4Ni octahedra, edges with four equivalent O(4)Sr2Sm3Ni octahedra, and faces with four equivalent O(5)SrSm3Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-53°. In the fourth O site, O(4) is bonded to two equivalent Sr(1), one Sm(2), two equivalent Sm(1), and one Ni(1) atom to form distorted OSr2Sm3Ni octahedra that share corners with four equivalent O(4)Sr2Sm3Ni octahedra, corners with twelve equivalent O(5)SrSm3Ni2 octahedra, edges with two equivalent O(2)SrSm4Ni octahedra, edges with four equivalent O(3)Sr2Sm3Ni octahedra, and faces with four equivalent O(5)SrSm3Ni2 octahedra. The corner-sharing octahedral tilt angles range from 17-52°. In the fifth O site, O(5) is bonded to one Sr(1), one Sm(1), one Sm(2), one Sm(3), one Ni(1), and one Ni(2) atom to form distorted OSrSm3Ni2 octahedra that share corners with two equivalent O(5)SrSm3Ni2 octahedra, corners with three equivalent O(3)Sr2Sm3Ni octahedra, corners with three equivalent O(4)Sr2Sm3Ni octahedra, corners with three equivalent O(2)SrSm4Ni octahedra, edges with two equivalent O(5)SrSm3Ni2 octahedra,  a faceface with one O(3)Sr2Sm3Ni octahedra,  a faceface with one O(4)Sr2Sm3Ni octahedra,  a faceface with one O(2)SrSm4Ni octahedra, and faces with four equivalent O(5)SrSm3Ni2 octahedra. The corner-sharing octahedral tilt angles range from 7-54°. is represented by the Crystallographic Information File (CIF) [CIF]
data_SrSm3(NiO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.757
_cell_length_b   6.757
_cell_length_c   5.380
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   133.497
_symmetry_Int_Tables_number   1
_cell_volume   178.194
_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  0.644  0.356  0.000  1.0
  Sm  Sm1  1  0.137  0.863  0.500  1.0
  Sm  Sm2  1  0.861  0.139  0.500  1.0
  Sm  Sm3  1  0.364  0.636  0.000  1.0
  Ni  Ni4  1  0.503  0.497  0.500  1.0
  Ni  Ni5  1  0.004  0.996  0.000  1.0
  O  O6  1  0.319  0.681  0.500  1.0
  O  O7  1  0.836  0.164  0.000  1.0
  O  O8  1  0.178  0.822  0.000  1.0
  O  O9  1  0.677  0.323  0.500  1.0
  O  O10  1  0.244  0.256  0.739  1.0
  O  O11  1  0.744  0.756  0.261  1.0
  O  O12  1  0.744  0.756  0.739  1.0
  O  O13  1  0.244  0.256  0.261  1.0
[/CIF]
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The crystal structure described by SrSm3(NiO4)2 is (La,Ba)CuO4-derived structured and crystallizes in the orthorhombic Amm2 space group. Sr(1) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(3), two equivalent O(4), and four equivalent O(5) atoms. There are three inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 9-coordinate geometry to one O(1), two equivalent O(3), two equivalent O(4), and four equivalent O(5) atoms. In the second Sm site, Sm(2) is bonded in a 9-coordinate geometry to one O(4), two equivalent O(1), two equivalent O(2), and four equivalent O(5) atoms. In the third Sm site, Sm(3) is bonded in a 9-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and four equivalent O(5) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one O(1), one O(4), and four equivalent O(5) atoms to form corner-sharing NiO6 octahedra. The corner-sharing octahedral tilt angles are 7°. In the second Ni site, Ni(2) is bonded to one O(2), one O(3), and four equivalent O(5) atoms to form corner-sharing NiO6 octahedra. The corner-sharing octahedral tilt angles are 7°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one Sm(1), two equivalent Sm(2), two equivalent Sm(3), and one Ni(1) atom. In the second O site, O(2) is bonded to one Sr(1), two equivalent Sm(2), two equivalent Sm(3), and one Ni(2) atom to form distorted OSrSm4Ni octahedra that share  a cornercorner with one O(3)Sr2Sm3Ni octahedra, corners with four equivalent O(2)SrSm4Ni octahedra, corners with twelve equivalent O(5)SrSm3Ni2 octahedra, edges with two equivalent O(3)Sr2Sm3Ni octahedra, edges with two equivalent O(4)Sr2Sm3Ni octahedra, and faces with four equivalent O(5)SrSm3Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-54°. In the third O site, O(3) is bonded to two equivalent Sr(1), one Sm(3), two equivalent Sm(1), and one Ni(2) atom to form distorted OSr2Sm3Ni octahedra that share  a cornercorner with one O(2)SrSm4Ni octahedra, corners with four equivalent O(3)Sr2Sm3Ni octahedra, corners with twelve equivalent O(5)SrSm3Ni2 octahedra, edges with two equivalent O(2)SrSm4Ni octahedra, edges with four equivalent O(4)Sr2Sm3Ni octahedra, and faces with four equivalent O(5)SrSm3Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-53°. In the fourth O site, O(4) is bonded to two equivalent Sr(1), one Sm(2), two equivalent Sm(1), and one Ni(1) atom to form distorted OSr2Sm3Ni octahedra that share corners with four equivalent O(4)Sr2Sm3Ni octahedra, corners with twelve equivalent O(5)SrSm3Ni2 octahedra, edges with two equivalent O(2)SrSm4Ni octahedra, edges with four equivalent O(3)Sr2Sm3Ni octahedra, and faces with four equivalent O(5)SrSm3Ni2 octahedra. The corner-sharing octahedral tilt angles range from 17-52°. In the fifth O site, O(5) is bonded to one Sr(1), one Sm(1), one Sm(2), one Sm(3), one Ni(1), and one Ni(2) atom to form distorted OSrSm3Ni2 octahedra that share corners with two equivalent O(5)SrSm3Ni2 octahedra, corners with three equivalent O(3)Sr2Sm3Ni octahedra, corners with three equivalent O(4)Sr2Sm3Ni octahedra, corners with three equivalent O(2)SrSm4Ni octahedra, edges with two equivalent O(5)SrSm3Ni2 octahedra,  a faceface with one O(3)Sr2Sm3Ni octahedra,  a faceface with one O(4)Sr2Sm3Ni octahedra,  a faceface with one O(2)SrSm4Ni octahedra, and faces with four equivalent O(5)SrSm3Ni2 octahedra. The corner-sharing octahedral tilt angles range from 7-54°. is represented by the Crystallographic Information File (CIF) [CIF]
data_SrSm3(NiO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.757
_cell_length_b   6.757
_cell_length_c   5.380
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   133.497
_symmetry_Int_Tables_number   1
_cell_volume   178.194
_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  0.644  0.356  0.000  1.0
  Sm  Sm1  1  0.137  0.863  0.500  1.0
  Sm  Sm2  1  0.861  0.139  0.500  1.0
  Sm  Sm3  1  0.364  0.636  0.000  1.0
  Ni  Ni4  1  0.503  0.497  0.500  1.0
  Ni  Ni5  1  0.004  0.996  0.000  1.0
  O  O6  1  0.319  0.681  0.500  1.0
  O  O7  1  0.836  0.164  0.000  1.0
  O  O8  1  0.178  0.822  0.000  1.0
  O  O9  1  0.677  0.323  0.500  1.0
  O  O10  1  0.244  0.256  0.739  1.0
  O  O11  1  0.744  0.756  0.261  1.0
  O  O12  1  0.744  0.756  0.739  1.0
  O  O13  1  0.244  0.256  0.261  1.0
[/CIF]
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