The material structure described by La8Ni4O17 crystallizes in the triclinic P1 space group. There are eight inequivalent La sites. In the first La site, La(1) is bonded in a distorted single-bond geometry to one O(1), one O(14), one O(4), one O(5), and one O(6) atom. In the second La site, La(2) is bonded in a 1-coordinate geometry to one O(12), one O(14), one O(3), one O(5), and one O(6) atom. In the third La site, La(3) is bonded in a 1-coordinate geometry to one O(1), one O(3), one O(5), one O(6), and one O(9) atom. In the fourth La site, La(4) is bonded in a 3-coordinate geometry to one O(1), one O(2), one O(4), one O(5), one O(8), and one O(9) atom. In the fifth La site, La(5) is bonded in a 1-coordinate geometry to one O(11), one O(14), one O(5), one O(6), and one O(9) atom. In the sixth La site, La(6) is bonded in a 5-coordinate geometry to one O(12), one O(14), one O(15), one O(5), and one O(6) atom. In the seventh La site, La(7) is bonded in a 1-coordinate geometry to one O(1), one O(11), one O(12), one O(14), and one O(9) atom. In the eighth La site, La(8) is bonded in a 2-coordinate geometry to one O(1), one O(13), one O(14), one O(15), and one O(9) atom. There are four inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 6-coordinate geometry to one O(10), one O(15), one O(4), one O(5), one O(7), and one O(8) atom. In the second Ni site, Ni(2) is bonded in a distorted rectangular see-saw-like geometry to one O(10), one O(11), one O(3), one O(6), one O(7), and one O(9) atom. In the third Ni site, Ni(3) is bonded in a rectangular see-saw-like geometry to one O(1), one O(11), one O(16), one O(17), and one O(4) atom. In the fourth Ni site, Ni(4) is bonded in a 5-coordinate geometry to one O(14), one O(15), one O(16), one O(17), and one O(3) atom. There are seventeen inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one La(1), one La(3), one La(4), one La(7), one La(8), and one Ni(3) atom. In the second O site, O(2) is bonded in a 1-coordinate geometry to one La(4) atom. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one La(2), one La(3), one Ni(2), and one Ni(4) atom. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one La(1), one La(4), one Ni(1), and one Ni(3) atom. In the fifth O site, O(5) is bonded in a 7-coordinate geometry to one La(1), one La(2), one La(3), one La(4), one La(5), one La(6), and one Ni(1) atom. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one La(1), one La(2), one La(3), one La(5), one La(6), and one Ni(2) atom. In the seventh O site, O(7) is bonded in a distorted linear geometry to one Ni(1) and one Ni(2) atom. In the eighth O site, O(8) is bonded in a 1-coordinate geometry to one La(4) and one Ni(1) atom. In the ninth O site, O(9) is bonded in a 6-coordinate geometry to one La(3), one La(4), one La(5), one La(7), one La(8), and one Ni(2) atom. In the tenth O site, O(10) is bonded in a 2-coordinate geometry to one Ni(1) and one Ni(2) atom. In the eleventh O site, O(11) is bonded in a rectangular see-saw-like geometry to one La(5), one La(7), one Ni(2), and one Ni(3) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one La(2), one La(6), and one La(7) atom. In the thirteenth O site, O(13) is bonded in a distorted single-bond geometry to one La(8) atom. In the fourteenth O site, O(14) is bonded in a 7-coordinate geometry to one La(1), one La(2), one La(5), one La(6), one La(7), one La(8), and one Ni(4) atom. In the fifteenth O site, O(15) is bonded in a rectangular see-saw-like geometry to one La(6), one La(8), one Ni(1), and one Ni(4) atom. In the sixteenth O site, O(16) is bonded in a 2-coordinate geometry to one Ni(3) and one Ni(4) atom. In the seventeenth O site, O(17) is bonded in a 2-coordinate geometry to one Ni(3) and one Ni(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_La8Ni4O17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.903
_cell_length_b   7.794
_cell_length_c   8.688
_cell_angle_alpha   116.214
_cell_angle_beta   97.334
_cell_angle_gamma   106.567
_symmetry_Int_Tables_number   1
_cell_volume   384.042
_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
  La  La0  1  0.717  0.918  0.172  1.0
  La  La1  1  0.707  0.414  0.175  1.0
  La  La2  1  0.280  0.836  0.327  1.0
  La  La3  1  0.275  0.345  0.318  1.0
  La  La4  1  0.724  0.653  0.687  1.0
  La  La5  1  0.713  0.159  0.678  1.0
  La  La6  1  0.286  0.086  0.823  1.0
  La  La7  1  0.289  0.603  0.814  1.0
  Ni  Ni8  1  0.995  0.257  0.495  1.0
  Ni  Ni9  1  0.993  0.750  0.499  1.0
  Ni  Ni10  1  0.001  0.005  0.998  1.0
  Ni  Ni11  1  0.005  0.489  0.006  1.0
  O  O12  1  0.341  0.937  0.082  1.0
  O  O13  1  0.343  0.369  0.155  1.0
  O  O14  1  0.969  0.631  0.239  1.0
  O  O15  1  0.971  0.126  0.246  1.0
  O  O16  1  0.658  0.279  0.425  1.0
  O  O17  1  0.654  0.795  0.413  1.0
  O  O18  1  0.010  0.501  0.501  1.0
  O  O19  1  0.344  0.309  0.519  1.0
  O  O20  1  0.341  0.703  0.587  1.0
  O  O21  1  0.011  0.991  0.509  1.0
  O  O22  1  0.010  0.877  0.753  1.0
  O  O23  1  0.663  0.107  0.913  1.0
  O  O24  1  0.492  0.812  0.873  1.0
  O  O25  1  0.665  0.487  0.912  1.0
  O  O26  1  0.983  0.375  0.745  1.0
  O  O27  1  0.054  0.248  0.010  1.0
  O  O28  1  0.975  0.753  0.993  1.0
[/CIF]
.
The material structure described by La8Ni4O17 crystallizes in the triclinic P1 space group. There are eight inequivalent La sites. In the first La site, La(1) is bonded in a distorted single-bond geometry to one O(1), one O(14), one O(4), one O(5), and one O(6) atom. In the second La site, La(2) is bonded in a 1-coordinate geometry to one O(12), one O(14), one O(3), one O(5), and one O(6) atom. In the third La site, La(3) is bonded in a 1-coordinate geometry to one O(1), one O(3), one O(5), one O(6), and one O(9) atom. In the fourth La site, La(4) is bonded in a 3-coordinate geometry to one O(1), one O(2), one O(4), one O(5), one O(8), and one O(9) atom. In the fifth La site, La(5) is bonded in a 1-coordinate geometry to one O(11), one O(14), one O(5), one O(6), and one O(9) atom. In the sixth La site, La(6) is bonded in a 5-coordinate geometry to one O(12), one O(14), one O(15), one O(5), and one O(6) atom. In the seventh La site, La(7) is bonded in a 1-coordinate geometry to one O(1), one O(11), one O(12), one O(14), and one O(9) atom. In the eighth La site, La(8) is bonded in a 2-coordinate geometry to one O(1), one O(13), one O(14), one O(15), and one O(9) atom. There are four inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 6-coordinate geometry to one O(10), one O(15), one O(4), one O(5), one O(7), and one O(8) atom. In the second Ni site, Ni(2) is bonded in a distorted rectangular see-saw-like geometry to one O(10), one O(11), one O(3), one O(6), one O(7), and one O(9) atom. In the third Ni site, Ni(3) is bonded in a rectangular see-saw-like geometry to one O(1), one O(11), one O(16), one O(17), and one O(4) atom. In the fourth Ni site, Ni(4) is bonded in a 5-coordinate geometry to one O(14), one O(15), one O(16), one O(17), and one O(3) atom. There are seventeen inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one La(1), one La(3), one La(4), one La(7), one La(8), and one Ni(3) atom. In the second O site, O(2) is bonded in a 1-coordinate geometry to one La(4) atom. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one La(2), one La(3), one Ni(2), and one Ni(4) atom. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one La(1), one La(4), one Ni(1), and one Ni(3) atom. In the fifth O site, O(5) is bonded in a 7-coordinate geometry to one La(1), one La(2), one La(3), one La(4), one La(5), one La(6), and one Ni(1) atom. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one La(1), one La(2), one La(3), one La(5), one La(6), and one Ni(2) atom. In the seventh O site, O(7) is bonded in a distorted linear geometry to one Ni(1) and one Ni(2) atom. In the eighth O site, O(8) is bonded in a 1-coordinate geometry to one La(4) and one Ni(1) atom. In the ninth O site, O(9) is bonded in a 6-coordinate geometry to one La(3), one La(4), one La(5), one La(7), one La(8), and one Ni(2) atom. In the tenth O site, O(10) is bonded in a 2-coordinate geometry to one Ni(1) and one Ni(2) atom. In the eleventh O site, O(11) is bonded in a rectangular see-saw-like geometry to one La(5), one La(7), one Ni(2), and one Ni(3) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one La(2), one La(6), and one La(7) atom. In the thirteenth O site, O(13) is bonded in a distorted single-bond geometry to one La(8) atom. In the fourteenth O site, O(14) is bonded in a 7-coordinate geometry to one La(1), one La(2), one La(5), one La(6), one La(7), one La(8), and one Ni(4) atom. In the fifteenth O site, O(15) is bonded in a rectangular see-saw-like geometry to one La(6), one La(8), one Ni(1), and one Ni(4) atom. In the sixteenth O site, O(16) is bonded in a 2-coordinate geometry to one Ni(3) and one Ni(4) atom. In the seventeenth O site, O(17) is bonded in a 2-coordinate geometry to one Ni(3) and one Ni(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_La8Ni4O17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.903
_cell_length_b   7.794
_cell_length_c   8.688
_cell_angle_alpha   116.214
_cell_angle_beta   97.334
_cell_angle_gamma   106.567
_symmetry_Int_Tables_number   1
_cell_volume   384.042
_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
  La  La0  1  0.717  0.918  0.172  1.0
  La  La1  1  0.707  0.414  0.175  1.0
  La  La2  1  0.280  0.836  0.327  1.0
  La  La3  1  0.275  0.345  0.318  1.0
  La  La4  1  0.724  0.653  0.687  1.0
  La  La5  1  0.713  0.159  0.678  1.0
  La  La6  1  0.286  0.086  0.823  1.0
  La  La7  1  0.289  0.603  0.814  1.0
  Ni  Ni8  1  0.995  0.257  0.495  1.0
  Ni  Ni9  1  0.993  0.750  0.499  1.0
  Ni  Ni10  1  0.001  0.005  0.998  1.0
  Ni  Ni11  1  0.005  0.489  0.006  1.0
  O  O12  1  0.341  0.937  0.082  1.0
  O  O13  1  0.343  0.369  0.155  1.0
  O  O14  1  0.969  0.631  0.239  1.0
  O  O15  1  0.971  0.126  0.246  1.0
  O  O16  1  0.658  0.279  0.425  1.0
  O  O17  1  0.654  0.795  0.413  1.0
  O  O18  1  0.010  0.501  0.501  1.0
  O  O19  1  0.344  0.309  0.519  1.0
  O  O20  1  0.341  0.703  0.587  1.0
  O  O21  1  0.011  0.991  0.509  1.0
  O  O22  1  0.010  0.877  0.753  1.0
  O  O23  1  0.663  0.107  0.913  1.0
  O  O24  1  0.492  0.812  0.873  1.0
  O  O25  1  0.665  0.487  0.912  1.0
  O  O26  1  0.983  0.375  0.745  1.0
  O  O27  1  0.054  0.248  0.010  1.0
  O  O28  1  0.975  0.753  0.993  1.0
[/CIF]
.