The compound described by V11NiO18 is Ilmenite-like structured and crystallizes in the triclinic P1 space group. There are eleven inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(11), one O(13), one O(16), one O(2), and one O(3) atom to form VO6 octahedra that share  a cornercorner with one V(11)O6 octahedra,  a cornercorner with one V(2)O6 octahedra,  a cornercorner with one Ni(1)O6 octahedra, corners with two equivalent V(10)O6 octahedra, corners with two equivalent V(3)O6 octahedra, corners with two equivalent V(4)O6 octahedra,  an edgeedge with one V(5)O6 octahedra,  an edgeedge with one V(7)O6 octahedra,  an edgeedge with one V(9)O6 octahedra, and  a faceface with one V(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-58°. In the second V site, V(2) is bonded to one O(1), one O(11), one O(14), one O(16), one O(3), and one O(8) atom to form a mixture of corner, edge, and face-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 46-57°. In the third V site, V(3) is bonded to one O(1), one O(15), one O(3), one O(4), one O(6), and one O(7) atom to form VO6 octahedra that share  a cornercorner with one V(5)O6 octahedra,  a cornercorner with one V(7)O6 octahedra,  a cornercorner with one V(9)O6 octahedra, corners with two equivalent V(1)O6 octahedra, corners with two equivalent V(6)O6 octahedra, corners with two equivalent V(8)O6 octahedra,  an edgeedge with one V(11)O6 octahedra,  an edgeedge with one V(2)O6 octahedra,  an edgeedge with one Ni(1)O6 octahedra, and  a faceface with one V(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-58°. In the fourth V site, V(4) is bonded to one O(11), one O(17), one O(18), one O(2), one O(5), and one O(8) atom to form VO6 octahedra that share  a cornercorner with one V(5)O6 octahedra,  a cornercorner with one V(7)O6 octahedra,  a cornercorner with one V(9)O6 octahedra, corners with two equivalent V(1)O6 octahedra, corners with two equivalent V(6)O6 octahedra, corners with two equivalent V(8)O6 octahedra,  an edgeedge with one V(11)O6 octahedra,  an edgeedge with one V(2)O6 octahedra,  an edgeedge with one Ni(1)O6 octahedra, and  a faceface with one V(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-57°. In the fifth V site, V(5) is bonded to one O(16), one O(17), one O(18), one O(2), one O(6), and one O(8) atom to form VO6 octahedra that share  a cornercorner with one V(10)O6 octahedra,  a cornercorner with one V(3)O6 octahedra,  a cornercorner with one V(4)O6 octahedra, corners with two equivalent V(11)O6 octahedra, corners with two equivalent V(2)O6 octahedra, corners with two equivalent Ni(1)O6 octahedra,  an edgeedge with one V(1)O6 octahedra,  an edgeedge with one V(6)O6 octahedra,  an edgeedge with one V(8)O6 octahedra, and  a faceface with one V(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-57°. In the sixth V site, V(6) is bonded to one O(10), one O(15), one O(5), one O(6), one O(8), and one O(9) atom to form VO6 octahedra that share  a cornercorner with one V(11)O6 octahedra,  a cornercorner with one V(2)O6 octahedra,  a cornercorner with one Ni(1)O6 octahedra, corners with two equivalent V(10)O6 octahedra, corners with two equivalent V(3)O6 octahedra, corners with two equivalent V(4)O6 octahedra,  an edgeedge with one V(5)O6 octahedra,  an edgeedge with one V(7)O6 octahedra,  an edgeedge with one V(9)O6 octahedra, and  a faceface with one Ni(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-58°. In the seventh V site, V(7) is bonded to one O(10), one O(11), one O(13), one O(14), one O(4), and one O(9) atom to form VO6 octahedra that share  a cornercorner with one V(10)O6 octahedra,  a cornercorner with one V(3)O6 octahedra,  a cornercorner with one V(4)O6 octahedra, corners with two equivalent V(11)O6 octahedra, corners with two equivalent V(2)O6 octahedra, corners with two equivalent Ni(1)O6 octahedra,  an edgeedge with one V(1)O6 octahedra,  an edgeedge with one V(6)O6 octahedra,  an edgeedge with one V(8)O6 octahedra, and  a faceface with one V(10)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-58°. In the eighth V site, V(8) is bonded to one O(12), one O(14), one O(17), one O(18), one O(4), and one O(7) atom to form VO6 octahedra that share  a cornercorner with one V(11)O6 octahedra,  a cornercorner with one V(2)O6 octahedra,  a cornercorner with one Ni(1)O6 octahedra, corners with two equivalent V(10)O6 octahedra, corners with two equivalent V(3)O6 octahedra, corners with two equivalent V(4)O6 octahedra,  an edgeedge with one V(5)O6 octahedra,  an edgeedge with one V(7)O6 octahedra,  an edgeedge with one V(9)O6 octahedra, and  a faceface with one V(11)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-59°. In the ninth V site, V(9) is bonded to one O(1), one O(12), one O(15), one O(3), one O(5), and one O(7) atom to form VO6 octahedra that share  a cornercorner with one V(10)O6 octahedra,  a cornercorner with one V(3)O6 octahedra,  a cornercorner with one V(4)O6 octahedra, corners with two equivalent V(11)O6 octahedra, corners with two equivalent V(2)O6 octahedra, corners with two equivalent Ni(1)O6 octahedra,  an edgeedge with one V(1)O6 octahedra,  an edgeedge with one V(6)O6 octahedra,  an edgeedge with one V(8)O6 octahedra, and  a faceface with one V(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-57°. In the tenth V site, V(10) is bonded to one O(10), one O(12), one O(13), one O(14), one O(16), and one O(9) atom to form VO6 octahedra that share  a cornercorner with one V(5)O6 octahedra,  a cornercorner with one V(7)O6 octahedra,  a cornercorner with one V(9)O6 octahedra, corners with two equivalent V(1)O6 octahedra, corners with two equivalent V(6)O6 octahedra, corners with two equivalent V(8)O6 octahedra,  an edgeedge with one V(11)O6 octahedra,  an edgeedge with one V(2)O6 octahedra,  an edgeedge with one Ni(1)O6 octahedra, and  a faceface with one V(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-57°. In the eleventh V site, V(11) is bonded to one O(12), one O(13), one O(15), one O(17), one O(18), and one O(4) atom to form a mixture of corner, edge, and face-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 46-57°. Ni(1) is bonded to one O(10), one O(2), one O(5), one O(6), one O(7), and one O(9) atom to form NiO6 octahedra that share  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one V(6)O6 octahedra,  a cornercorner with one V(8)O6 octahedra, corners with two equivalent V(5)O6 octahedra, corners with two equivalent V(7)O6 octahedra, corners with two equivalent V(9)O6 octahedra,  an edgeedge with one V(10)O6 octahedra,  an edgeedge with one V(3)O6 octahedra,  an edgeedge with one V(4)O6 octahedra, and  a faceface with one V(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-59°. There are eighteen inequivalent O sites. In the first O site, O(1) is bonded to one V(1), one V(2), one V(3), and one V(9) atom to form distorted OV4 trigonal pyramids that share  a cornercorner with one O(5)V3Ni trigonal pyramid,  a cornercorner with one O(6)V3Ni trigonal pyramid,  a cornercorner with one O(13)V4 trigonal pyramid,  a cornercorner with one O(14)V4 trigonal pyramid,  a cornercorner with one O(4)V4 trigonal pyramid,  a cornercorner with one O(8)V4 trigonal pyramid, corners with two equivalent O(7)V3Ni trigonal pyramids, corners with two equivalent O(15)V4 trigonal pyramids,  an edgeedge with one O(11)V4 trigonal pyramid,  an edgeedge with one O(16)V4 trigonal pyramid, and edges with two equivalent O(3)V4 trigonal pyramids. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one V(1), one V(4), one V(5), and one Ni(1) atom. In the third O site, O(3) is bonded to one V(1), one V(2), one V(3), and one V(9) atom to form distorted OV4 trigonal pyramids that share  a cornercorner with one O(5)V3Ni trigonal pyramid,  a cornercorner with one O(6)V3Ni trigonal pyramid,  a cornercorner with one O(13)V4 trigonal pyramid,  a cornercorner with one O(14)V4 trigonal pyramid,  a cornercorner with one O(4)V4 trigonal pyramid,  a cornercorner with one O(8)V4 trigonal pyramid, corners with two equivalent O(11)V4 trigonal pyramids, corners with two equivalent O(16)V4 trigonal pyramids,  an edgeedge with one O(7)V3Ni trigonal pyramid,  an edgeedge with one O(15)V4 trigonal pyramid, and edges with two equivalent O(1)V4 trigonal pyramids. In the fourth O site, O(4) is bonded to one V(11), one V(3), one V(7), and one V(8) atom to form distorted OV4 trigonal pyramids that share  a cornercorner with one O(10)V3Ni trigonal pyramid,  a cornercorner with one O(6)V3Ni trigonal pyramid,  a cornercorner with one O(1)V4 trigonal pyramid,  a cornercorner with one O(11)V4 trigonal pyramid,  a cornercorner with one O(3)V4 trigonal pyramid, corners with two equivalent O(7)V3Ni trigonal pyramids, corners with two equivalent O(13)V4 trigonal pyramids, corners with two equivalent O(18)V4 trigonal pyramids,  an edgeedge with one O(14)V4 trigonal pyramid,  an edgeedge with one O(15)V4 trigonal pyramid, and  an edgeedge with one O(17)V4 trigonal pyramid. In the fifth O site, O(5) is bonded to one V(4), one V(6), one V(9), and one Ni(1) atom to form distorted OV3Ni trigonal pyramids that share  a cornercorner with one O(1)V4 trigonal pyramid,  a cornercorner with one O(11)V4 trigonal pyramid,  a cornercorner with one O(17)V4 trigonal pyramid,  a cornercorner with one O(18)V4 trigonal pyramid,  a cornercorner with one O(3)V4 trigonal pyramid, corners with two equivalent O(7)V3Ni trigonal pyramids, corners with two equivalent O(8)V4 trigonal pyramids,  an edgeedge with one O(10)V3Ni trigonal pyramid,  an edgeedge with one O(6)V3Ni trigonal pyramid, and  an edgeedge with one O(15)V4 trigonal pyramid. In the sixth O site, O(6) is bonded to one V(3), one V(5), one V(6), and one Ni(1) atom to form distorted OV3Ni trigonal pyramids that share  a cornercorner with one O(1)V4 trigonal pyramid,  a cornercorner with one O(16)V4 trigonal pyramid,  a cornercorner with one O(17)V4 trigonal pyramid,  a cornercorner with one O(18)V4 trigonal pyramid,  a cornercorner with one O(3)V4 trigonal pyramid,  a cornercorner with one O(4)V4 trigonal pyramid, corners with two equivalent O(15)V4 trigonal pyramids,  an edgeedge with one O(10)V3Ni trigonal pyramid,  an edgeedge with one O(5)V3Ni trigonal pyramid,  an edgeedge with one O(7)V3Ni trigonal pyramid, and  an edgeedge with one O(8)V4 trigonal pyramid. In the seventh O site, O(7) is bonded to one V(3), one V(8), one V(9), and one Ni(1) atom to form distorted OV3Ni trigonal pyramids that share  a cornercorner with one O(10)V3Ni trigonal pyramid,  a cornercorner with one O(14)V4 trigonal pyramid,  a cornercorner with one O(17)V4 trigonal pyramid,  a cornercorner with one O(18)V4 trigonal pyramid, corners with two equivalent O(5)V3Ni trigonal pyramids, corners with two equivalent O(1)V4 trigonal pyramids, corners with two equivalent O(4)V4 trigonal pyramids,  an edgeedge with one O(6)V3Ni trigonal pyramid,  an edgeedge with one O(15)V4 trigonal pyramid, and  an edgeedge with one O(3)V4 trigonal pyramid. In the eighth O site, O(8) is bonded to one V(2), one V(4), one V(5), and one V(6) atom to form distorted OV4 trigonal pyramids that share  a cornercorner with one O(10)V3Ni trigonal pyramid,  a cornercorner with one O(1)V4 trigonal pyramid,  a cornercorner with one O(14)V4 trigonal pyramid,  a cornercorner with one O(15)V4 trigonal pyramid,  a cornercorner with one O(3)V4 trigonal pyramid, corners with two equivalent O(5)V3Ni trigonal pyramids, corners with two equivalent O(16)V4 trigonal pyramids, corners with two equivalent O(17)V4 trigonal pyramids,  an edgeedge with one O(6)V3Ni trigonal pyramid,  an edgeedge with one O(11)V4 trigonal pyramid, and  an edgeedge with one O(18)V4 trigonal pyramid. In the ninth O site, O(9) is bonded in a rectangular see-saw-like geometry to one V(10), one V(6), one V(7), and one Ni(1) atom. In the tenth O site, O(10) is bonded to one V(10), one V(6), one V(7), and one Ni(1) atom to form distorted OV3Ni trigonal pyramids that share  a cornercorner with one O(7)V3Ni trigonal pyramid,  a cornercorner with one O(11)V4 trigonal pyramid,  a cornercorner with one O(15)V4 trigonal pyramid,  a cornercorner with one O(16)V4 trigonal pyramid,  a cornercorner with one O(4)V4 trigonal pyramid,  a cornercorner with one O(8)V4 trigonal pyramid, corners with two equivalent O(13)V4 trigonal pyramids, corners with two equivalent O(14)V4 trigonal pyramids,  an edgeedge with one O(5)V3Ni trigonal pyramid, and  an edgeedge with one O(6)V3Ni trigonal pyramid. In the eleventh O site, O(11) is bonded to one V(1), one V(2), one V(4), and one V(7) atom to form distorted OV4 trigonal pyramids that share  a cornercorner with one O(10)V3Ni trigonal pyramid,  a cornercorner with one O(5)V3Ni trigonal pyramid,  a cornercorner with one O(17)V4 trigonal pyramid,  a cornercorner with one O(18)V4 trigonal pyramid,  a cornercorner with one O(4)V4 trigonal pyramid, corners with two equivalent O(14)V4 trigonal pyramids, corners with two equivalent O(3)V4 trigonal pyramids,  an edgeedge with one O(1)V4 trigonal pyramid,  an edgeedge with one O(13)V4 trigonal pyramid,  an edgeedge with one O(16)V4 trigonal pyramid, and  an edgeedge with one O(8)V4 trigonal pyramid. In the twelfth O site, O(12) is bonded in a rectangular see-saw-like geometry to one V(10), one V(11), one V(8), and one V(9) atom. In the thirteenth O site, O(13) is bonded to one V(1), one V(10), one V(11), and one V(7) atom to form distorted OV4 trigonal pyramids that share  a cornercorner with one O(1)V4 trigonal pyramid,  a cornercorner with one O(15)V4 trigonal pyramid,  a cornercorner with one O(17)V4 trigonal pyramid,  a cornercorner with one O(18)V4 trigonal pyramid,  a cornercorner with one O(3)V4 trigonal pyramid, corners with two equivalent O(10)V3Ni trigonal pyramids, corners with two equivalent O(16)V4 trigonal pyramids, corners with two equivalent O(4)V4 trigonal pyramids,  an edgeedge with one O(11)V4 trigonal pyramid, and  an edgeedge with one O(14)V4 trigonal pyramid. In the fourteenth O site, O(14) is bonded to one V(10), one V(2), one V(7), and one V(8) atom to form distorted OV4 trigonal pyramids that share  a cornercorner with one O(7)V3Ni trigonal pyramid,  a cornercorner with one O(1)V4 trigonal pyramid,  a cornercorner with one O(17)V4 trigonal pyramid,  a cornercorner with one O(18)V4 trigonal pyramid,  a cornercorner with one O(3)V4 trigonal pyramid,  a cornercorner with one O(8)V4 trigonal pyramid, corners with two equivalent O(10)V3Ni trigonal pyramids, corners with two equivalent O(11)V4 trigonal pyramids,  an edgeedge with one O(13)V4 trigonal pyramid,  an edgeedge with one O(16)V4 trigonal pyramid, and  an edgeedge with one O(4)V4 trigonal pyramid. In the fifteenth O site, O(15) is bonded to one V(11), one V(3), one V(6), and one V(9) atom to form distorted OV4 trigonal pyramids that share  a cornercorner with one O(10)V3Ni trigonal pyramid,  a cornercorner with one O(13)V4 trigonal pyramid,  a cornercorner with one O(17)V4 trigonal pyramid,  a cornercorner with one O(18)V4 trigonal pyramid,  a cornercorner with one O(8)V4 trigonal pyramid, corners with two equivalent O(6)V3Ni trigonal pyramids, corners with two equivalent O(1)V4 trigonal pyramids,  an edgeedge with one O(5)V3Ni trigonal pyramid,  an edgeedge with one O(7)V3Ni trigonal pyramid,  an edgeedge with one O(3)V4 trigonal pyramid, and  an edgeedge with one O(4)V4 trigonal pyramid. In the sixteenth O site, O(16) is bonded to one V(1), one V(10), one V(2), and one V(5) atom to form distorted OV4 trigonal pyramids that share  a cornercorner with one O(10)V3Ni trigonal pyramid,  a cornercorner with one O(6)V3Ni trigonal pyramid,  a cornercorner with one O(17)V4 trigonal pyramid,  a cornercorner with one O(18)V4 trigonal pyramid, corners with two equivalent O(13)V4 trigonal pyramids, corners with two equivalent O(3)V4 trigonal pyramids, corners with two equivalent O(8)V4 trigonal pyramids,  an edgeedge with one O(1)V4 trigonal pyramid,  an edgeedge with one O(11)V4 trigonal pyramid, and  an edgeedge with one O(14)V4 trigonal pyramid. In the seventeenth O site, O(17) is bonded to one V(11), one V(4), one V(5), and one V(8) atom to form distorted OV4 trigonal pyramids that share  a cornercorner with one O(5)V3Ni trigonal pyramid,  a cornercorner with one O(6)V3Ni trigonal pyramid,  a cornercorner with one O(7)V3Ni trigonal pyramid,  a cornercorner with one O(11)V4 trigonal pyramid,  a cornercorner with one O(13)V4 trigonal pyramid,  a cornercorner with one O(14)V4 trigonal pyramid,  a cornercorner with one O(15)V4 trigonal pyramid,  a cornercorner with one O(16)V4 trigonal pyramid, corners with two equivalent O(8)V4 trigonal pyramids,  an edgeedge with one O(4)V4 trigonal pyramid, and edges with two equivalent O(18)V4 trigonal pyramids. In the eighteenth O site, O(18) is bonded to one V(11), one V(4), one V(5), and one V(8) atom to form distorted OV4 trigonal pyramids that share  a cornercorner with one O(5)V3Ni trigonal pyramid,  a cornercorner with one O(6)V3Ni trigonal pyramid,  a cornercorner with one O(7)V3Ni trigonal pyramid,  a cornercorner with one O(11)V4 trigonal pyramid,  a cornercorner with one O(13)V4 trigonal pyramid,  a cornercorner with one O(14)V4 trigonal pyramid,  a cornercorner with one O(15)V4 trigonal pyramid,  a cornercorner with one O(16)V4 trigonal pyramid, corners with two equivalent O(4)V4 trigonal pyramids,  an edgeedge with one O(8)V4 trigonal pyramid, and edges with two equivalent O(17)V4 trigonal pyramids. is represented by the CIF file [CIF]
data_V11NiO18
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.459
_cell_length_b   8.627
_cell_length_c   7.399
_cell_angle_alpha   67.275
_cell_angle_beta   97.769
_cell_angle_gamma   75.070
_symmetry_Int_Tables_number   1
_cell_volume   299.597
_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
  V  V0  1  0.309  0.000  0.353  1.0
  V  V1  1  0.694  0.003  0.149  1.0
  V  V2  1  0.637  0.330  0.186  1.0
  V  V3  1  0.307  0.002  0.848  1.0
  V  V4  1  0.698  0.995  0.652  1.0
  V  V5  1  0.643  0.337  0.677  1.0
  V  V6  1  0.368  0.666  0.319  1.0
  V  V7  1  0.967  0.664  0.016  1.0
  V  V8  1  0.017  0.337  0.980  1.0
  V  V9  1  0.978  0.664  0.515  1.0
  V  V10  1  0.357  0.666  0.818  1.0
  Ni  Ni11  1  0.034  0.332  0.485  1.0
  O  O12  1  0.390  0.208  0.146  1.0
  O  O13  1  0.298  0.096  0.548  1.0
  O  O14  1  0.938  0.126  0.187  1.0
  O  O15  1  0.374  0.563  0.125  1.0
  O  O16  1  0.041  0.228  0.796  1.0
  O  O17  1  0.721  0.227  0.480  1.0
  O  O18  1  0.933  0.436  0.182  1.0
  O  O19  1  0.607  0.107  0.850  1.0
  O  O20  1  0.279  0.461  0.523  1.0
  O  O21  1  0.731  0.544  0.481  1.0
  O  O22  1  0.394  0.900  0.145  1.0
  O  O23  1  0.057  0.564  0.809  1.0
  O  O24  1  0.272  0.772  0.518  1.0
  O  O25  1  0.959  0.771  0.209  1.0
  O  O26  1  0.618  0.439  0.876  1.0
  O  O27  1  0.713  0.896  0.455  1.0
  O  O28  1  0.063  0.874  0.815  1.0
  O  O29  1  0.600  0.791  0.856  1.0
[/CIF]
.
The compound described by V11NiO18 is Ilmenite-like structured and crystallizes in the triclinic P1 space group. There are eleven inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(11), one O(13), one O(16), one O(2), and one O(3) atom to form VO6 octahedra that share  a cornercorner with one V(11)O6 octahedra,  a cornercorner with one V(2)O6 octahedra,  a cornercorner with one Ni(1)O6 octahedra, corners with two equivalent V(10)O6 octahedra, corners with two equivalent V(3)O6 octahedra, corners with two equivalent V(4)O6 octahedra,  an edgeedge with one V(5)O6 octahedra,  an edgeedge with one V(7)O6 octahedra,  an edgeedge with one V(9)O6 octahedra, and  a faceface with one V(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-58°. In the second V site, V(2) is bonded to one O(1), one O(11), one O(14), one O(16), one O(3), and one O(8) atom to form a mixture of corner, edge, and face-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 46-57°. In the third V site, V(3) is bonded to one O(1), one O(15), one O(3), one O(4), one O(6), and one O(7) atom to form VO6 octahedra that share  a cornercorner with one V(5)O6 octahedra,  a cornercorner with one V(7)O6 octahedra,  a cornercorner with one V(9)O6 octahedra, corners with two equivalent V(1)O6 octahedra, corners with two equivalent V(6)O6 octahedra, corners with two equivalent V(8)O6 octahedra,  an edgeedge with one V(11)O6 octahedra,  an edgeedge with one V(2)O6 octahedra,  an edgeedge with one Ni(1)O6 octahedra, and  a faceface with one V(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-58°. In the fourth V site, V(4) is bonded to one O(11), one O(17), one O(18), one O(2), one O(5), and one O(8) atom to form VO6 octahedra that share  a cornercorner with one V(5)O6 octahedra,  a cornercorner with one V(7)O6 octahedra,  a cornercorner with one V(9)O6 octahedra, corners with two equivalent V(1)O6 octahedra, corners with two equivalent V(6)O6 octahedra, corners with two equivalent V(8)O6 octahedra,  an edgeedge with one V(11)O6 octahedra,  an edgeedge with one V(2)O6 octahedra,  an edgeedge with one Ni(1)O6 octahedra, and  a faceface with one V(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-57°. In the fifth V site, V(5) is bonded to one O(16), one O(17), one O(18), one O(2), one O(6), and one O(8) atom to form VO6 octahedra that share  a cornercorner with one V(10)O6 octahedra,  a cornercorner with one V(3)O6 octahedra,  a cornercorner with one V(4)O6 octahedra, corners with two equivalent V(11)O6 octahedra, corners with two equivalent V(2)O6 octahedra, corners with two equivalent Ni(1)O6 octahedra,  an edgeedge with one V(1)O6 octahedra,  an edgeedge with one V(6)O6 octahedra,  an edgeedge with one V(8)O6 octahedra, and  a faceface with one V(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-57°. In the sixth V site, V(6) is bonded to one O(10), one O(15), one O(5), one O(6), one O(8), and one O(9) atom to form VO6 octahedra that share  a cornercorner with one V(11)O6 octahedra,  a cornercorner with one V(2)O6 octahedra,  a cornercorner with one Ni(1)O6 octahedra, corners with two equivalent V(10)O6 octahedra, corners with two equivalent V(3)O6 octahedra, corners with two equivalent V(4)O6 octahedra,  an edgeedge with one V(5)O6 octahedra,  an edgeedge with one V(7)O6 octahedra,  an edgeedge with one V(9)O6 octahedra, and  a faceface with one Ni(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-58°. In the seventh V site, V(7) is bonded to one O(10), one O(11), one O(13), one O(14), one O(4), and one O(9) atom to form VO6 octahedra that share  a cornercorner with one V(10)O6 octahedra,  a cornercorner with one V(3)O6 octahedra,  a cornercorner with one V(4)O6 octahedra, corners with two equivalent V(11)O6 octahedra, corners with two equivalent V(2)O6 octahedra, corners with two equivalent Ni(1)O6 octahedra,  an edgeedge with one V(1)O6 octahedra,  an edgeedge with one V(6)O6 octahedra,  an edgeedge with one V(8)O6 octahedra, and  a faceface with one V(10)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-58°. In the eighth V site, V(8) is bonded to one O(12), one O(14), one O(17), one O(18), one O(4), and one O(7) atom to form VO6 octahedra that share  a cornercorner with one V(11)O6 octahedra,  a cornercorner with one V(2)O6 octahedra,  a cornercorner with one Ni(1)O6 octahedra, corners with two equivalent V(10)O6 octahedra, corners with two equivalent V(3)O6 octahedra, corners with two equivalent V(4)O6 octahedra,  an edgeedge with one V(5)O6 octahedra,  an edgeedge with one V(7)O6 octahedra,  an edgeedge with one V(9)O6 octahedra, and  a faceface with one V(11)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-59°. In the ninth V site, V(9) is bonded to one O(1), one O(12), one O(15), one O(3), one O(5), and one O(7) atom to form VO6 octahedra that share  a cornercorner with one V(10)O6 octahedra,  a cornercorner with one V(3)O6 octahedra,  a cornercorner with one V(4)O6 octahedra, corners with two equivalent V(11)O6 octahedra, corners with two equivalent V(2)O6 octahedra, corners with two equivalent Ni(1)O6 octahedra,  an edgeedge with one V(1)O6 octahedra,  an edgeedge with one V(6)O6 octahedra,  an edgeedge with one V(8)O6 octahedra, and  a faceface with one V(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-57°. In the tenth V site, V(10) is bonded to one O(10), one O(12), one O(13), one O(14), one O(16), and one O(9) atom to form VO6 octahedra that share  a cornercorner with one V(5)O6 octahedra,  a cornercorner with one V(7)O6 octahedra,  a cornercorner with one V(9)O6 octahedra, corners with two equivalent V(1)O6 octahedra, corners with two equivalent V(6)O6 octahedra, corners with two equivalent V(8)O6 octahedra,  an edgeedge with one V(11)O6 octahedra,  an edgeedge with one V(2)O6 octahedra,  an edgeedge with one Ni(1)O6 octahedra, and  a faceface with one V(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-57°. In the eleventh V site, V(11) is bonded to one O(12), one O(13), one O(15), one O(17), one O(18), and one O(4) atom to form a mixture of corner, edge, and face-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 46-57°. Ni(1) is bonded to one O(10), one O(2), one O(5), one O(6), one O(7), and one O(9) atom to form NiO6 octahedra that share  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one V(6)O6 octahedra,  a cornercorner with one V(8)O6 octahedra, corners with two equivalent V(5)O6 octahedra, corners with two equivalent V(7)O6 octahedra, corners with two equivalent V(9)O6 octahedra,  an edgeedge with one V(10)O6 octahedra,  an edgeedge with one V(3)O6 octahedra,  an edgeedge with one V(4)O6 octahedra, and  a faceface with one V(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-59°. There are eighteen inequivalent O sites. In the first O site, O(1) is bonded to one V(1), one V(2), one V(3), and one V(9) atom to form distorted OV4 trigonal pyramids that share  a cornercorner with one O(5)V3Ni trigonal pyramid,  a cornercorner with one O(6)V3Ni trigonal pyramid,  a cornercorner with one O(13)V4 trigonal pyramid,  a cornercorner with one O(14)V4 trigonal pyramid,  a cornercorner with one O(4)V4 trigonal pyramid,  a cornercorner with one O(8)V4 trigonal pyramid, corners with two equivalent O(7)V3Ni trigonal pyramids, corners with two equivalent O(15)V4 trigonal pyramids,  an edgeedge with one O(11)V4 trigonal pyramid,  an edgeedge with one O(16)V4 trigonal pyramid, and edges with two equivalent O(3)V4 trigonal pyramids. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one V(1), one V(4), one V(5), and one Ni(1) atom. In the third O site, O(3) is bonded to one V(1), one V(2), one V(3), and one V(9) atom to form distorted OV4 trigonal pyramids that share  a cornercorner with one O(5)V3Ni trigonal pyramid,  a cornercorner with one O(6)V3Ni trigonal pyramid,  a cornercorner with one O(13)V4 trigonal pyramid,  a cornercorner with one O(14)V4 trigonal pyramid,  a cornercorner with one O(4)V4 trigonal pyramid,  a cornercorner with one O(8)V4 trigonal pyramid, corners with two equivalent O(11)V4 trigonal pyramids, corners with two equivalent O(16)V4 trigonal pyramids,  an edgeedge with one O(7)V3Ni trigonal pyramid,  an edgeedge with one O(15)V4 trigonal pyramid, and edges with two equivalent O(1)V4 trigonal pyramids. In the fourth O site, O(4) is bonded to one V(11), one V(3), one V(7), and one V(8) atom to form distorted OV4 trigonal pyramids that share  a cornercorner with one O(10)V3Ni trigonal pyramid,  a cornercorner with one O(6)V3Ni trigonal pyramid,  a cornercorner with one O(1)V4 trigonal pyramid,  a cornercorner with one O(11)V4 trigonal pyramid,  a cornercorner with one O(3)V4 trigonal pyramid, corners with two equivalent O(7)V3Ni trigonal pyramids, corners with two equivalent O(13)V4 trigonal pyramids, corners with two equivalent O(18)V4 trigonal pyramids,  an edgeedge with one O(14)V4 trigonal pyramid,  an edgeedge with one O(15)V4 trigonal pyramid, and  an edgeedge with one O(17)V4 trigonal pyramid. In the fifth O site, O(5) is bonded to one V(4), one V(6), one V(9), and one Ni(1) atom to form distorted OV3Ni trigonal pyramids that share  a cornercorner with one O(1)V4 trigonal pyramid,  a cornercorner with one O(11)V4 trigonal pyramid,  a cornercorner with one O(17)V4 trigonal pyramid,  a cornercorner with one O(18)V4 trigonal pyramid,  a cornercorner with one O(3)V4 trigonal pyramid, corners with two equivalent O(7)V3Ni trigonal pyramids, corners with two equivalent O(8)V4 trigonal pyramids,  an edgeedge with one O(10)V3Ni trigonal pyramid,  an edgeedge with one O(6)V3Ni trigonal pyramid, and  an edgeedge with one O(15)V4 trigonal pyramid. In the sixth O site, O(6) is bonded to one V(3), one V(5), one V(6), and one Ni(1) atom to form distorted OV3Ni trigonal pyramids that share  a cornercorner with one O(1)V4 trigonal pyramid,  a cornercorner with one O(16)V4 trigonal pyramid,  a cornercorner with one O(17)V4 trigonal pyramid,  a cornercorner with one O(18)V4 trigonal pyramid,  a cornercorner with one O(3)V4 trigonal pyramid,  a cornercorner with one O(4)V4 trigonal pyramid, corners with two equivalent O(15)V4 trigonal pyramids,  an edgeedge with one O(10)V3Ni trigonal pyramid,  an edgeedge with one O(5)V3Ni trigonal pyramid,  an edgeedge with one O(7)V3Ni trigonal pyramid, and  an edgeedge with one O(8)V4 trigonal pyramid. In the seventh O site, O(7) is bonded to one V(3), one V(8), one V(9), and one Ni(1) atom to form distorted OV3Ni trigonal pyramids that share  a cornercorner with one O(10)V3Ni trigonal pyramid,  a cornercorner with one O(14)V4 trigonal pyramid,  a cornercorner with one O(17)V4 trigonal pyramid,  a cornercorner with one O(18)V4 trigonal pyramid, corners with two equivalent O(5)V3Ni trigonal pyramids, corners with two equivalent O(1)V4 trigonal pyramids, corners with two equivalent O(4)V4 trigonal pyramids,  an edgeedge with one O(6)V3Ni trigonal pyramid,  an edgeedge with one O(15)V4 trigonal pyramid, and  an edgeedge with one O(3)V4 trigonal pyramid. In the eighth O site, O(8) is bonded to one V(2), one V(4), one V(5), and one V(6) atom to form distorted OV4 trigonal pyramids that share  a cornercorner with one O(10)V3Ni trigonal pyramid,  a cornercorner with one O(1)V4 trigonal pyramid,  a cornercorner with one O(14)V4 trigonal pyramid,  a cornercorner with one O(15)V4 trigonal pyramid,  a cornercorner with one O(3)V4 trigonal pyramid, corners with two equivalent O(5)V3Ni trigonal pyramids, corners with two equivalent O(16)V4 trigonal pyramids, corners with two equivalent O(17)V4 trigonal pyramids,  an edgeedge with one O(6)V3Ni trigonal pyramid,  an edgeedge with one O(11)V4 trigonal pyramid, and  an edgeedge with one O(18)V4 trigonal pyramid. In the ninth O site, O(9) is bonded in a rectangular see-saw-like geometry to one V(10), one V(6), one V(7), and one Ni(1) atom. In the tenth O site, O(10) is bonded to one V(10), one V(6), one V(7), and one Ni(1) atom to form distorted OV3Ni trigonal pyramids that share  a cornercorner with one O(7)V3Ni trigonal pyramid,  a cornercorner with one O(11)V4 trigonal pyramid,  a cornercorner with one O(15)V4 trigonal pyramid,  a cornercorner with one O(16)V4 trigonal pyramid,  a cornercorner with one O(4)V4 trigonal pyramid,  a cornercorner with one O(8)V4 trigonal pyramid, corners with two equivalent O(13)V4 trigonal pyramids, corners with two equivalent O(14)V4 trigonal pyramids,  an edgeedge with one O(5)V3Ni trigonal pyramid, and  an edgeedge with one O(6)V3Ni trigonal pyramid. In the eleventh O site, O(11) is bonded to one V(1), one V(2), one V(4), and one V(7) atom to form distorted OV4 trigonal pyramids that share  a cornercorner with one O(10)V3Ni trigonal pyramid,  a cornercorner with one O(5)V3Ni trigonal pyramid,  a cornercorner with one O(17)V4 trigonal pyramid,  a cornercorner with one O(18)V4 trigonal pyramid,  a cornercorner with one O(4)V4 trigonal pyramid, corners with two equivalent O(14)V4 trigonal pyramids, corners with two equivalent O(3)V4 trigonal pyramids,  an edgeedge with one O(1)V4 trigonal pyramid,  an edgeedge with one O(13)V4 trigonal pyramid,  an edgeedge with one O(16)V4 trigonal pyramid, and  an edgeedge with one O(8)V4 trigonal pyramid. In the twelfth O site, O(12) is bonded in a rectangular see-saw-like geometry to one V(10), one V(11), one V(8), and one V(9) atom. In the thirteenth O site, O(13) is bonded to one V(1), one V(10), one V(11), and one V(7) atom to form distorted OV4 trigonal pyramids that share  a cornercorner with one O(1)V4 trigonal pyramid,  a cornercorner with one O(15)V4 trigonal pyramid,  a cornercorner with one O(17)V4 trigonal pyramid,  a cornercorner with one O(18)V4 trigonal pyramid,  a cornercorner with one O(3)V4 trigonal pyramid, corners with two equivalent O(10)V3Ni trigonal pyramids, corners with two equivalent O(16)V4 trigonal pyramids, corners with two equivalent O(4)V4 trigonal pyramids,  an edgeedge with one O(11)V4 trigonal pyramid, and  an edgeedge with one O(14)V4 trigonal pyramid. In the fourteenth O site, O(14) is bonded to one V(10), one V(2), one V(7), and one V(8) atom to form distorted OV4 trigonal pyramids that share  a cornercorner with one O(7)V3Ni trigonal pyramid,  a cornercorner with one O(1)V4 trigonal pyramid,  a cornercorner with one O(17)V4 trigonal pyramid,  a cornercorner with one O(18)V4 trigonal pyramid,  a cornercorner with one O(3)V4 trigonal pyramid,  a cornercorner with one O(8)V4 trigonal pyramid, corners with two equivalent O(10)V3Ni trigonal pyramids, corners with two equivalent O(11)V4 trigonal pyramids,  an edgeedge with one O(13)V4 trigonal pyramid,  an edgeedge with one O(16)V4 trigonal pyramid, and  an edgeedge with one O(4)V4 trigonal pyramid. In the fifteenth O site, O(15) is bonded to one V(11), one V(3), one V(6), and one V(9) atom to form distorted OV4 trigonal pyramids that share  a cornercorner with one O(10)V3Ni trigonal pyramid,  a cornercorner with one O(13)V4 trigonal pyramid,  a cornercorner with one O(17)V4 trigonal pyramid,  a cornercorner with one O(18)V4 trigonal pyramid,  a cornercorner with one O(8)V4 trigonal pyramid, corners with two equivalent O(6)V3Ni trigonal pyramids, corners with two equivalent O(1)V4 trigonal pyramids,  an edgeedge with one O(5)V3Ni trigonal pyramid,  an edgeedge with one O(7)V3Ni trigonal pyramid,  an edgeedge with one O(3)V4 trigonal pyramid, and  an edgeedge with one O(4)V4 trigonal pyramid. In the sixteenth O site, O(16) is bonded to one V(1), one V(10), one V(2), and one V(5) atom to form distorted OV4 trigonal pyramids that share  a cornercorner with one O(10)V3Ni trigonal pyramid,  a cornercorner with one O(6)V3Ni trigonal pyramid,  a cornercorner with one O(17)V4 trigonal pyramid,  a cornercorner with one O(18)V4 trigonal pyramid, corners with two equivalent O(13)V4 trigonal pyramids, corners with two equivalent O(3)V4 trigonal pyramids, corners with two equivalent O(8)V4 trigonal pyramids,  an edgeedge with one O(1)V4 trigonal pyramid,  an edgeedge with one O(11)V4 trigonal pyramid, and  an edgeedge with one O(14)V4 trigonal pyramid. In the seventeenth O site, O(17) is bonded to one V(11), one V(4), one V(5), and one V(8) atom to form distorted OV4 trigonal pyramids that share  a cornercorner with one O(5)V3Ni trigonal pyramid,  a cornercorner with one O(6)V3Ni trigonal pyramid,  a cornercorner with one O(7)V3Ni trigonal pyramid,  a cornercorner with one O(11)V4 trigonal pyramid,  a cornercorner with one O(13)V4 trigonal pyramid,  a cornercorner with one O(14)V4 trigonal pyramid,  a cornercorner with one O(15)V4 trigonal pyramid,  a cornercorner with one O(16)V4 trigonal pyramid, corners with two equivalent O(8)V4 trigonal pyramids,  an edgeedge with one O(4)V4 trigonal pyramid, and edges with two equivalent O(18)V4 trigonal pyramids. In the eighteenth O site, O(18) is bonded to one V(11), one V(4), one V(5), and one V(8) atom to form distorted OV4 trigonal pyramids that share  a cornercorner with one O(5)V3Ni trigonal pyramid,  a cornercorner with one O(6)V3Ni trigonal pyramid,  a cornercorner with one O(7)V3Ni trigonal pyramid,  a cornercorner with one O(11)V4 trigonal pyramid,  a cornercorner with one O(13)V4 trigonal pyramid,  a cornercorner with one O(14)V4 trigonal pyramid,  a cornercorner with one O(15)V4 trigonal pyramid,  a cornercorner with one O(16)V4 trigonal pyramid, corners with two equivalent O(4)V4 trigonal pyramids,  an edgeedge with one O(8)V4 trigonal pyramid, and edges with two equivalent O(17)V4 trigonal pyramids. is represented by the CIF file [CIF]
data_V11NiO18
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.459
_cell_length_b   8.627
_cell_length_c   7.399
_cell_angle_alpha   67.275
_cell_angle_beta   97.769
_cell_angle_gamma   75.070
_symmetry_Int_Tables_number   1
_cell_volume   299.597
_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
  V  V0  1  0.309  0.000  0.353  1.0
  V  V1  1  0.694  0.003  0.149  1.0
  V  V2  1  0.637  0.330  0.186  1.0
  V  V3  1  0.307  0.002  0.848  1.0
  V  V4  1  0.698  0.995  0.652  1.0
  V  V5  1  0.643  0.337  0.677  1.0
  V  V6  1  0.368  0.666  0.319  1.0
  V  V7  1  0.967  0.664  0.016  1.0
  V  V8  1  0.017  0.337  0.980  1.0
  V  V9  1  0.978  0.664  0.515  1.0
  V  V10  1  0.357  0.666  0.818  1.0
  Ni  Ni11  1  0.034  0.332  0.485  1.0
  O  O12  1  0.390  0.208  0.146  1.0
  O  O13  1  0.298  0.096  0.548  1.0
  O  O14  1  0.938  0.126  0.187  1.0
  O  O15  1  0.374  0.563  0.125  1.0
  O  O16  1  0.041  0.228  0.796  1.0
  O  O17  1  0.721  0.227  0.480  1.0
  O  O18  1  0.933  0.436  0.182  1.0
  O  O19  1  0.607  0.107  0.850  1.0
  O  O20  1  0.279  0.461  0.523  1.0
  O  O21  1  0.731  0.544  0.481  1.0
  O  O22  1  0.394  0.900  0.145  1.0
  O  O23  1  0.057  0.564  0.809  1.0
  O  O24  1  0.272  0.772  0.518  1.0
  O  O25  1  0.959  0.771  0.209  1.0
  O  O26  1  0.618  0.439  0.876  1.0
  O  O27  1  0.713  0.896  0.455  1.0
  O  O28  1  0.063  0.874  0.815  1.0
  O  O29  1  0.600  0.791  0.856  1.0
[/CIF]
.