The structure described by Li4Nb2Cr3Ni3O16 is Spinel-derived structured and crystallizes in the triclinic P1 space group. There are four inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(11), one O(12), one O(15), and one O(3) atom to form LiO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Ni(1)O6 octahedra, corners with two equivalent Cr(3)O6 octahedra, corners with two equivalent Ni(2)O6 octahedra, corners with two equivalent Ni(3)O6 octahedra, and corners with three equivalent Nb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-64°. In the second Li site, Li(2) is bonded to one O(14), one O(16), one O(5), and one O(9) atom to form distorted LiO4 trigonal pyramids that share  a cornercorner with one Cr(3)O6 octahedra,  a cornercorner with one Ni(2)O6 octahedra,  a cornercorner with one Ni(3)O6 octahedra, corners with three equivalent Nb(2)O6 octahedra,  an edgeedge with one Cr(1)O6 octahedra,  an edgeedge with one Cr(2)O6 octahedra, and  an edgeedge with one Ni(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 59-66°. In the third Li site, Li(3) is bonded to one O(1), one O(10), one O(4), and one O(6) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Ni(1)O6 octahedra, corners with three equivalent Nb(1)O6 octahedra,  an edgeedge with one Cr(3)O6 octahedra,  an edgeedge with one Ni(2)O6 octahedra, and  an edgeedge with one Ni(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-67°. In the fourth Li site, Li(4) is bonded to one O(13), one O(2), one O(7), and one O(8) atom to form LiO4 tetrahedra that share  a cornercorner with one Cr(3)O6 octahedra,  a cornercorner with one Ni(2)O6 octahedra,  a cornercorner with one Ni(3)O6 octahedra, corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Cr(2)O6 octahedra, corners with two equivalent Ni(1)O6 octahedra, and corners with three equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 51-63°. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(1), one O(10), one O(2), one O(6), one O(7), and one O(8) atom to form distorted NbO6 octahedra that share corners with two equivalent Cr(3)O6 octahedra, corners with two equivalent Ni(2)O6 octahedra, corners with two equivalent Ni(3)O6 octahedra, corners with three equivalent Li(3)O4 tetrahedra, corners with three equivalent Li(4)O4 tetrahedra,  an edgeedge with one Cr(1)O6 octahedra,  an edgeedge with one Cr(2)O6 octahedra, and  an edgeedge with one Ni(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 51-53°. In the second Nb site, Nb(2) is bonded to one O(11), one O(12), one O(14), one O(15), one O(16), and one O(9) atom to form NbO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Cr(2)O6 octahedra, corners with two equivalent Ni(1)O6 octahedra, corners with three equivalent Li(1)O4 tetrahedra, corners with three equivalent Li(2)O4 trigonal pyramids,  an edgeedge with one Cr(3)O6 octahedra,  an edgeedge with one Ni(2)O6 octahedra, and  an edgeedge with one Ni(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-53°. There are three inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(14), one O(2), one O(3), one O(4), one O(7), and one O(9) atom to form CrO6 octahedra that share corners with two equivalent Nb(2)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  an edgeedge with one Nb(1)O6 octahedra, edges with two equivalent Cr(2)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, and  an edgeedge with one Li(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles are 52°. In the second Cr site, Cr(2) is bonded to one O(16), one O(2), one O(3), one O(4), one O(8), and one O(9) atom to form CrO6 octahedra that share corners with two equivalent Nb(2)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  an edgeedge with one Nb(1)O6 octahedra, edges with two equivalent Cr(1)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, and  an edgeedge with one Li(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 52-53°. In the third Cr site, Cr(3) is bonded to one O(1), one O(11), one O(12), one O(13), one O(5), and one O(6) atom to form CrO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra,  a cornercorner with one Li(4)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 trigonal pyramid,  an edgeedge with one Nb(2)O6 octahedra, edges with two equivalent Ni(2)O6 octahedra, edges with two equivalent Ni(3)O6 octahedra, and  an edgeedge with one Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 51°. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one O(14), one O(16), one O(3), one O(4), one O(7), and one O(8) atom to form NiO6 octahedra that share corners with two equivalent Nb(2)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  an edgeedge with one Nb(1)O6 octahedra, edges with two equivalent Cr(1)O6 octahedra, edges with two equivalent Cr(2)O6 octahedra, and  an edgeedge with one Li(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles are 53°. In the second Ni site, Ni(2) is bonded to one O(1), one O(10), one O(11), one O(13), one O(15), and one O(5) atom to form NiO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra,  a cornercorner with one Li(4)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 trigonal pyramid,  an edgeedge with one Nb(2)O6 octahedra, edges with two equivalent Cr(3)O6 octahedra, edges with two equivalent Ni(3)O6 octahedra, and  an edgeedge with one Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 53°. In the third Ni site, Ni(3) is bonded to one O(10), one O(12), one O(13), one O(15), one O(5), and one O(6) atom to form NiO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra,  a cornercorner with one Li(4)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 trigonal pyramid,  an edgeedge with one Nb(2)O6 octahedra, edges with two equivalent Cr(3)O6 octahedra, edges with two equivalent Ni(2)O6 octahedra, and  an edgeedge with one Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 53°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Li(3), one Nb(1), one Cr(3), and one Ni(2) atom. In the second O site, O(2) is bonded to one Li(4), one Nb(1), one Cr(1), and one Cr(2) atom to form distorted OLiNbCr2 tetrahedra that share  a cornercorner with one O(7)LiNbCrNi tetrahedra,  a cornercorner with one O(8)LiNbCrNi tetrahedra, corners with two equivalent O(4)LiCr2Ni tetrahedra,  an edgeedge with one O(7)LiNbCrNi tetrahedra, and  an edgeedge with one O(8)LiNbCrNi tetrahedra. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Li(1), one Cr(1), one Cr(2), and one Ni(1) atom. In the fourth O site, O(4) is bonded to one Li(3), one Cr(1), one Cr(2), and one Ni(1) atom to form OLiCr2Ni tetrahedra that share corners with two equivalent O(2)LiNbCr2 tetrahedra, corners with two equivalent O(7)LiNbCrNi tetrahedra, and corners with two equivalent O(8)LiNbCrNi tetrahedra. In the fifth O site, O(5) is bonded to one Li(2), one Cr(3), one Ni(2), and one Ni(3) atom to form corner-sharing OLiCrNi2 tetrahedra. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to one Li(3), one Nb(1), one Cr(3), and one Ni(3) atom. In the seventh O site, O(7) is bonded to one Li(4), one Nb(1), one Cr(1), and one Ni(1) atom to form distorted OLiNbCrNi tetrahedra that share  a cornercorner with one O(2)LiNbCr2 tetrahedra,  a cornercorner with one O(8)LiNbCrNi tetrahedra, corners with two equivalent O(4)LiCr2Ni tetrahedra,  an edgeedge with one O(2)LiNbCr2 tetrahedra, and  an edgeedge with one O(8)LiNbCrNi tetrahedra. In the eighth O site, O(8) is bonded to one Li(4), one Nb(1), one Cr(2), and one Ni(1) atom to form distorted OLiNbCrNi tetrahedra that share  a cornercorner with one O(2)LiNbCr2 tetrahedra,  a cornercorner with one O(7)LiNbCrNi tetrahedra, corners with two equivalent O(4)LiCr2Ni tetrahedra,  an edgeedge with one O(2)LiNbCr2 tetrahedra, and  an edgeedge with one O(7)LiNbCrNi tetrahedra. In the ninth O site, O(9) is bonded in a rectangular see-saw-like geometry to one Li(2), one Nb(2), one Cr(1), and one Cr(2) atom. In the tenth O site, O(10) is bonded in a rectangular see-saw-like geometry to one Li(3), one Nb(1), one Ni(2), and one Ni(3) atom. In the eleventh O site, O(11) is bonded in a distorted rectangular see-saw-like geometry to one Li(1), one Nb(2), one Cr(3), and one Ni(2) atom. In the twelfth O site, O(12) is bonded in a distorted rectangular see-saw-like geometry to one Li(1), one Nb(2), one Cr(3), and one Ni(3) atom. In the thirteenth O site, O(13) is bonded in a rectangular see-saw-like geometry to one Li(4), one Cr(3), one Ni(2), and one Ni(3) atom. In the fourteenth O site, O(14) is bonded in a rectangular see-saw-like geometry to one Li(2), one Nb(2), one Cr(1), and one Ni(1) atom. In the fifteenth O site, O(15) is bonded to one Li(1), one Nb(2), one Ni(2), and one Ni(3) atom to form corner-sharing OLiNbNi2 tetrahedra. In the sixteenth O site, O(16) is bonded in a rectangular see-saw-like geometry to one Li(2), one Nb(2), one Cr(2), and one Ni(1) atom. is represented by the CIF card [CIF]
data_Li4Nb2Cr3Ni3O16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.892
_cell_length_b   5.893
_cell_length_c   9.643
_cell_angle_alpha   90.028
_cell_angle_beta   90.440
_cell_angle_gamma   120.031
_symmetry_Int_Tables_number   1
_cell_volume   289.869
_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
  Li  Li0  1  0.324  0.662  0.898  1.0
  Li  Li1  1  0.004  0.002  0.990  1.0
  Li  Li2  1  0.002  0.001  0.494  1.0
  Li  Li3  1  0.665  0.333  0.398  1.0
  Nb  Nb4  1  0.338  0.669  0.499  1.0
  Nb  Nb5  1  0.677  0.339  0.997  1.0
  Cr  Cr6  1  0.179  0.834  0.219  1.0
  Cr  Cr7  1  0.177  0.344  0.219  1.0
  Cr  Cr8  1  0.349  0.174  0.725  1.0
  Ni  Ni9  1  0.658  0.829  0.212  1.0
  Ni  Ni10  1  0.827  0.658  0.713  1.0
  Ni  Ni11  1  0.827  0.169  0.713  1.0
  O  O12  1  0.176  0.840  0.593  1.0
  O  O13  1  0.037  0.519  0.337  1.0
  O  O14  1  0.313  0.657  0.107  1.0
  O  O15  1  0.015  0.008  0.303  1.0
  O  O16  1  0.012  0.006  0.797  1.0
  O  O17  1  0.176  0.336  0.593  1.0
  O  O18  1  0.478  0.964  0.339  1.0
  O  O19  1  0.477  0.514  0.339  1.0
  O  O20  1  0.335  0.168  0.099  1.0
  O  O21  1  0.674  0.837  0.593  1.0
  O  O22  1  0.500  0.468  0.846  1.0
  O  O23  1  0.500  0.032  0.845  1.0
  O  O24  1  0.644  0.322  0.611  1.0
  O  O25  1  0.841  0.673  0.094  1.0
  O  O26  1  0.952  0.476  0.839  1.0
  O  O27  1  0.841  0.168  0.094  1.0
[/CIF]
.
The structure described by Li4Nb2Cr3Ni3O16 is Spinel-derived structured and crystallizes in the triclinic P1 space group. There are four inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(11), one O(12), one O(15), and one O(3) atom to form LiO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Ni(1)O6 octahedra, corners with two equivalent Cr(3)O6 octahedra, corners with two equivalent Ni(2)O6 octahedra, corners with two equivalent Ni(3)O6 octahedra, and corners with three equivalent Nb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-64°. In the second Li site, Li(2) is bonded to one O(14), one O(16), one O(5), and one O(9) atom to form distorted LiO4 trigonal pyramids that share  a cornercorner with one Cr(3)O6 octahedra,  a cornercorner with one Ni(2)O6 octahedra,  a cornercorner with one Ni(3)O6 octahedra, corners with three equivalent Nb(2)O6 octahedra,  an edgeedge with one Cr(1)O6 octahedra,  an edgeedge with one Cr(2)O6 octahedra, and  an edgeedge with one Ni(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 59-66°. In the third Li site, Li(3) is bonded to one O(1), one O(10), one O(4), and one O(6) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Ni(1)O6 octahedra, corners with three equivalent Nb(1)O6 octahedra,  an edgeedge with one Cr(3)O6 octahedra,  an edgeedge with one Ni(2)O6 octahedra, and  an edgeedge with one Ni(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-67°. In the fourth Li site, Li(4) is bonded to one O(13), one O(2), one O(7), and one O(8) atom to form LiO4 tetrahedra that share  a cornercorner with one Cr(3)O6 octahedra,  a cornercorner with one Ni(2)O6 octahedra,  a cornercorner with one Ni(3)O6 octahedra, corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Cr(2)O6 octahedra, corners with two equivalent Ni(1)O6 octahedra, and corners with three equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 51-63°. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(1), one O(10), one O(2), one O(6), one O(7), and one O(8) atom to form distorted NbO6 octahedra that share corners with two equivalent Cr(3)O6 octahedra, corners with two equivalent Ni(2)O6 octahedra, corners with two equivalent Ni(3)O6 octahedra, corners with three equivalent Li(3)O4 tetrahedra, corners with three equivalent Li(4)O4 tetrahedra,  an edgeedge with one Cr(1)O6 octahedra,  an edgeedge with one Cr(2)O6 octahedra, and  an edgeedge with one Ni(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 51-53°. In the second Nb site, Nb(2) is bonded to one O(11), one O(12), one O(14), one O(15), one O(16), and one O(9) atom to form NbO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Cr(2)O6 octahedra, corners with two equivalent Ni(1)O6 octahedra, corners with three equivalent Li(1)O4 tetrahedra, corners with three equivalent Li(2)O4 trigonal pyramids,  an edgeedge with one Cr(3)O6 octahedra,  an edgeedge with one Ni(2)O6 octahedra, and  an edgeedge with one Ni(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-53°. There are three inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(14), one O(2), one O(3), one O(4), one O(7), and one O(9) atom to form CrO6 octahedra that share corners with two equivalent Nb(2)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  an edgeedge with one Nb(1)O6 octahedra, edges with two equivalent Cr(2)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, and  an edgeedge with one Li(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles are 52°. In the second Cr site, Cr(2) is bonded to one O(16), one O(2), one O(3), one O(4), one O(8), and one O(9) atom to form CrO6 octahedra that share corners with two equivalent Nb(2)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  an edgeedge with one Nb(1)O6 octahedra, edges with two equivalent Cr(1)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, and  an edgeedge with one Li(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 52-53°. In the third Cr site, Cr(3) is bonded to one O(1), one O(11), one O(12), one O(13), one O(5), and one O(6) atom to form CrO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra,  a cornercorner with one Li(4)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 trigonal pyramid,  an edgeedge with one Nb(2)O6 octahedra, edges with two equivalent Ni(2)O6 octahedra, edges with two equivalent Ni(3)O6 octahedra, and  an edgeedge with one Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 51°. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one O(14), one O(16), one O(3), one O(4), one O(7), and one O(8) atom to form NiO6 octahedra that share corners with two equivalent Nb(2)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  an edgeedge with one Nb(1)O6 octahedra, edges with two equivalent Cr(1)O6 octahedra, edges with two equivalent Cr(2)O6 octahedra, and  an edgeedge with one Li(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles are 53°. In the second Ni site, Ni(2) is bonded to one O(1), one O(10), one O(11), one O(13), one O(15), and one O(5) atom to form NiO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra,  a cornercorner with one Li(4)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 trigonal pyramid,  an edgeedge with one Nb(2)O6 octahedra, edges with two equivalent Cr(3)O6 octahedra, edges with two equivalent Ni(3)O6 octahedra, and  an edgeedge with one Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 53°. In the third Ni site, Ni(3) is bonded to one O(10), one O(12), one O(13), one O(15), one O(5), and one O(6) atom to form NiO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra,  a cornercorner with one Li(4)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 trigonal pyramid,  an edgeedge with one Nb(2)O6 octahedra, edges with two equivalent Cr(3)O6 octahedra, edges with two equivalent Ni(2)O6 octahedra, and  an edgeedge with one Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 53°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Li(3), one Nb(1), one Cr(3), and one Ni(2) atom. In the second O site, O(2) is bonded to one Li(4), one Nb(1), one Cr(1), and one Cr(2) atom to form distorted OLiNbCr2 tetrahedra that share  a cornercorner with one O(7)LiNbCrNi tetrahedra,  a cornercorner with one O(8)LiNbCrNi tetrahedra, corners with two equivalent O(4)LiCr2Ni tetrahedra,  an edgeedge with one O(7)LiNbCrNi tetrahedra, and  an edgeedge with one O(8)LiNbCrNi tetrahedra. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Li(1), one Cr(1), one Cr(2), and one Ni(1) atom. In the fourth O site, O(4) is bonded to one Li(3), one Cr(1), one Cr(2), and one Ni(1) atom to form OLiCr2Ni tetrahedra that share corners with two equivalent O(2)LiNbCr2 tetrahedra, corners with two equivalent O(7)LiNbCrNi tetrahedra, and corners with two equivalent O(8)LiNbCrNi tetrahedra. In the fifth O site, O(5) is bonded to one Li(2), one Cr(3), one Ni(2), and one Ni(3) atom to form corner-sharing OLiCrNi2 tetrahedra. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to one Li(3), one Nb(1), one Cr(3), and one Ni(3) atom. In the seventh O site, O(7) is bonded to one Li(4), one Nb(1), one Cr(1), and one Ni(1) atom to form distorted OLiNbCrNi tetrahedra that share  a cornercorner with one O(2)LiNbCr2 tetrahedra,  a cornercorner with one O(8)LiNbCrNi tetrahedra, corners with two equivalent O(4)LiCr2Ni tetrahedra,  an edgeedge with one O(2)LiNbCr2 tetrahedra, and  an edgeedge with one O(8)LiNbCrNi tetrahedra. In the eighth O site, O(8) is bonded to one Li(4), one Nb(1), one Cr(2), and one Ni(1) atom to form distorted OLiNbCrNi tetrahedra that share  a cornercorner with one O(2)LiNbCr2 tetrahedra,  a cornercorner with one O(7)LiNbCrNi tetrahedra, corners with two equivalent O(4)LiCr2Ni tetrahedra,  an edgeedge with one O(2)LiNbCr2 tetrahedra, and  an edgeedge with one O(7)LiNbCrNi tetrahedra. In the ninth O site, O(9) is bonded in a rectangular see-saw-like geometry to one Li(2), one Nb(2), one Cr(1), and one Cr(2) atom. In the tenth O site, O(10) is bonded in a rectangular see-saw-like geometry to one Li(3), one Nb(1), one Ni(2), and one Ni(3) atom. In the eleventh O site, O(11) is bonded in a distorted rectangular see-saw-like geometry to one Li(1), one Nb(2), one Cr(3), and one Ni(2) atom. In the twelfth O site, O(12) is bonded in a distorted rectangular see-saw-like geometry to one Li(1), one Nb(2), one Cr(3), and one Ni(3) atom. In the thirteenth O site, O(13) is bonded in a rectangular see-saw-like geometry to one Li(4), one Cr(3), one Ni(2), and one Ni(3) atom. In the fourteenth O site, O(14) is bonded in a rectangular see-saw-like geometry to one Li(2), one Nb(2), one Cr(1), and one Ni(1) atom. In the fifteenth O site, O(15) is bonded to one Li(1), one Nb(2), one Ni(2), and one Ni(3) atom to form corner-sharing OLiNbNi2 tetrahedra. In the sixteenth O site, O(16) is bonded in a rectangular see-saw-like geometry to one Li(2), one Nb(2), one Cr(2), and one Ni(1) atom. is represented by the CIF card [CIF]
data_Li4Nb2Cr3Ni3O16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.892
_cell_length_b   5.893
_cell_length_c   9.643
_cell_angle_alpha   90.028
_cell_angle_beta   90.440
_cell_angle_gamma   120.031
_symmetry_Int_Tables_number   1
_cell_volume   289.869
_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
  Li  Li0  1  0.324  0.662  0.898  1.0
  Li  Li1  1  0.004  0.002  0.990  1.0
  Li  Li2  1  0.002  0.001  0.494  1.0
  Li  Li3  1  0.665  0.333  0.398  1.0
  Nb  Nb4  1  0.338  0.669  0.499  1.0
  Nb  Nb5  1  0.677  0.339  0.997  1.0
  Cr  Cr6  1  0.179  0.834  0.219  1.0
  Cr  Cr7  1  0.177  0.344  0.219  1.0
  Cr  Cr8  1  0.349  0.174  0.725  1.0
  Ni  Ni9  1  0.658  0.829  0.212  1.0
  Ni  Ni10  1  0.827  0.658  0.713  1.0
  Ni  Ni11  1  0.827  0.169  0.713  1.0
  O  O12  1  0.176  0.840  0.593  1.0
  O  O13  1  0.037  0.519  0.337  1.0
  O  O14  1  0.313  0.657  0.107  1.0
  O  O15  1  0.015  0.008  0.303  1.0
  O  O16  1  0.012  0.006  0.797  1.0
  O  O17  1  0.176  0.336  0.593  1.0
  O  O18  1  0.478  0.964  0.339  1.0
  O  O19  1  0.477  0.514  0.339  1.0
  O  O20  1  0.335  0.168  0.099  1.0
  O  O21  1  0.674  0.837  0.593  1.0
  O  O22  1  0.500  0.468  0.846  1.0
  O  O23  1  0.500  0.032  0.845  1.0
  O  O24  1  0.644  0.322  0.611  1.0
  O  O25  1  0.841  0.673  0.094  1.0
  O  O26  1  0.952  0.476  0.839  1.0
  O  O27  1  0.841  0.168  0.094  1.0
[/CIF]
.