The structure described by Li9Cr4(BO3)8 crystallizes in the triclinic P1 space group. There are nine inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(15), one O(18), and one O(2) atom to form LiO4 tetrahedra that share  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Cr(3)O6 octahedra, corners with two equivalent Li(6)O4 tetrahedra, and  an edgeedge with one Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 60-74°. In the second Li site, Li(2) is bonded to one O(22), one O(4), one O(5), and one O(9) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Cr(4)O6 octahedra, corners with two equivalent Li(4)O4 tetrahedra,  an edgeedge with one Cr(2)O6 octahedra, and  an edgeedge with one Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 59-83°. In the third Li site, Li(3) is bonded to one O(11), one O(13), one O(5), and one O(9) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Cr(2)O6 octahedra,  an edgeedge with one Cr(2)O6 octahedra,  an edgeedge with one Li(2)O4 tetrahedra, and  an edgeedge with one Li(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 31-64°. In the fourth Li site, Li(4) is bonded to one O(11), one O(12), one O(4), and one O(9) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Cr(3)O6 octahedra,  a cornercorner with one Li(7)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra,  an edgeedge with one Cr(2)O6 octahedra, and  an edgeedge with one Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 37-85°. In the fifth Li site, Li(5) is bonded to one O(10), one O(19), one O(24), and one O(8) atom to form LiO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Cr(3)O6 octahedra,  an edgeedge with one Cr(4)O6 octahedra, and  an edgeedge with one Li(9)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 31-77°. In the sixth Li site, Li(6) is bonded to one O(1), one O(15), one O(17), and one O(6) atom to form LiO4 tetrahedra that share  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Cr(4)O6 octahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Li(9)O4 trigonal pyramid, and  an edgeedge with one Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 30-78°. In the seventh Li site, Li(7) is bonded to one O(12), one O(14), one O(16), and one O(20) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Cr(3)O6 octahedra,  a cornercorner with one Cr(4)O6 octahedra,  a cornercorner with one Li(4)O4 tetrahedra,  an edgeedge with one Cr(3)O6 octahedra, and  an edgeedge with one Li(8)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 39-69°. In the eighth Li site, Li(8) is bonded to one O(16), one O(20), one O(21), and one O(3) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Cr(4)O6 octahedra,  an edgeedge with one Cr(3)O6 octahedra, and  an edgeedge with one Li(7)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 58-77°. In the ninth Li site, Li(9) is bonded to one O(10), one O(17), one O(19), and one O(23) atom to form distorted LiO4 trigonal pyramids that share  a cornercorner with one Cr(3)O6 octahedra,  a cornercorner with one Cr(4)O6 octahedra,  a cornercorner with one Li(6)O4 tetrahedra,  an edgeedge with one Cr(4)O6 octahedra, and  an edgeedge with one Li(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 38-71°. There are four inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(1), one O(2), one O(3), one O(6), one O(8), and one O(9) atom to form distorted CrO6 octahedra that share  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(8)O4 tetrahedra,  an edgeedge with one Li(1)O4 tetrahedra, and  an edgeedge with one Li(6)O4 tetrahedra. In the second Cr site, Cr(2) is bonded to one O(11), one O(13), one O(15), one O(4), one O(5), and one O(7) atom to form distorted CrO6 octahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra,  an edgeedge with one Li(2)O4 tetrahedra,  an edgeedge with one Li(3)O4 tetrahedra, and  an edgeedge with one Li(4)O4 tetrahedra. In the third Cr site, Cr(3) is bonded to one O(10), one O(12), one O(14), one O(18), one O(20), and one O(21) atom to form CrO6 octahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(7)O4 tetrahedra,  a cornercorner with one Li(9)O4 trigonal pyramid,  an edgeedge with one Li(7)O4 tetrahedra, and  an edgeedge with one Li(8)O4 tetrahedra. In the fourth Cr site, Cr(4) is bonded to one O(16), one O(17), one O(19), one O(22), one O(23), and one O(24) atom to form CrO6 octahedra that share  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Li(7)O4 tetrahedra,  a cornercorner with one Li(8)O4 tetrahedra,  a cornercorner with one Li(9)O4 trigonal pyramid,  an edgeedge with one Li(5)O4 tetrahedra, and  an edgeedge with one Li(9)O4 trigonal pyramid. There are eight inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(1), one O(20), and one O(7) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(23), one O(3), and one O(4) atom. In the third B site, B(3) is bonded in a trigonal planar geometry to one O(14), one O(8), and one O(9) atom. In the fourth B site, B(4) is bonded in a trigonal planar geometry to one O(10), one O(12), and one O(6) atom. In the fifth B site, B(5) is bonded in a trigonal planar geometry to one O(13), one O(15), and one O(19) atom. In the sixth B site, B(6) is bonded in a trigonal planar geometry to one O(11), one O(16), and one O(17) atom. In the seventh B site, B(7) is bonded in a trigonal planar geometry to one O(2), one O(21), and one O(22) atom. In the eighth B site, B(8) is bonded in a trigonal planar geometry to one O(18), one O(24), and one O(5) atom. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), one Li(6), one Cr(1), and one B(1) atom to form distorted OLi2CrB trigonal pyramids that share  a cornercorner with one O(9)Li3CrB trigonal bipyramid and corners with two equivalent O(15)Li2CrB trigonal pyramids. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Li(1), one Cr(1), and one B(7) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Li(8), one Cr(1), and one B(2) atom. In the fourth O site, O(4) is bonded in a distorted see-saw-like geometry to one Li(2), one Li(4), one Cr(2), and one B(2) atom. In the fifth O site, O(5) is bonded in a rectangular see-saw-like geometry to one Li(2), one Li(3), one Cr(2), and one B(8) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Li(6), one Cr(1), and one B(4) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Cr(2) and one B(1) atom. In the eighth O site, O(8) is bonded in a distorted T-shaped geometry to one Li(5), one Cr(1), and one B(3) atom. In the ninth O site, O(9) is bonded to one Li(2), one Li(3), one Li(4), one Cr(1), and one B(3) atom to form a mixture of distorted edge and corner-sharing OLi3CrB trigonal bipyramids. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Li(5), one Li(9), one Cr(3), and one B(4) atom. In the eleventh O site, O(11) is bonded to one Li(3), one Li(4), one Cr(2), and one B(6) atom to form distorted OLi2CrB trigonal pyramids that share  a cornercorner with one O(15)Li2CrB trigonal pyramid and  an edgeedge with one O(9)Li3CrB trigonal bipyramid. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Li(4), one Li(7), one Cr(3), and one B(4) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal non-coplanar geometry to one Li(3), one Cr(2), and one B(5) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one Li(7), one Cr(3), and one B(3) atom. In the fifteenth O site, O(15) is bonded to one Li(1), one Li(6), one Cr(2), and one B(5) atom to form distorted corner-sharing OLi2CrB trigonal pyramids. In the sixteenth O site, O(16) is bonded in a 4-coordinate geometry to one Li(7), one Li(8), one Cr(4), and one B(6) atom. In the seventeenth O site, O(17) is bonded in a distorted see-saw-like geometry to one Li(6), one Li(9), one Cr(4), and one B(6) atom. In the eighteenth O site, O(18) is bonded in a trigonal planar geometry to one Li(1), one Cr(3), and one B(8) atom. In the nineteenth O site, O(19) is bonded in a 4-coordinate geometry to one Li(5), one Li(9), one Cr(4), and one B(5) atom. In the twentieth O site, O(20) is bonded in a 4-coordinate geometry to one Li(7), one Li(8), one Cr(3), and one B(1) atom. In the twenty-first O site, O(21) is bonded in a distorted T-shaped geometry to one Li(8), one Cr(3), and one B(7) atom. In the twenty-second O site, O(22) is bonded in a distorted trigonal planar geometry to one Li(2), one Cr(4), and one B(7) atom. In the twenty-third O site, O(23) is bonded in a 3-coordinate geometry to one Li(9), one Cr(4), and one B(2) atom. In the twenty-fourth O site, O(24) is bonded in a 3-coordinate geometry to one Li(5), one Cr(4), and one B(8) atom. is represented by the CIF file [CIF]
data_Li9Cr4(BO3)8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.039
_cell_length_b   8.944
_cell_length_c   9.460
_cell_angle_alpha   65.629
_cell_angle_beta   88.995
_cell_angle_gamma   89.377
_symmetry_Int_Tables_number   1
_cell_volume   465.364
_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  0.251  0.146  0.086  1.0
  Li  Li1  1  0.219  0.128  0.574  1.0
  Li  Li2  1  0.429  0.302  0.673  1.0
  Li  Li3  1  0.762  0.383  0.486  1.0
  Li  Li4  1  0.255  0.604  0.011  1.0
  Li  Li5  1  0.774  0.379  0.997  1.0
  Li  Li6  1  0.548  0.706  0.341  1.0
  Li  Li7  1  0.792  0.868  0.427  1.0
  Li  Li8  1  0.919  0.725  0.837  1.0
  Cr  Cr9  1  0.533  0.230  0.282  1.0
  Cr  Cr10  1  0.967  0.230  0.780  1.0
  Cr  Cr11  1  0.046  0.761  0.224  1.0
  Cr  Cr12  1  0.466  0.762  0.721  1.0
  B  B13  1  0.716  0.052  0.080  1.0
  B  B14  1  0.784  0.053  0.577  1.0
  B  B15  1  0.337  0.451  0.313  1.0
  B  B16  1  0.841  0.544  0.190  1.0
  B  B17  1  0.154  0.456  0.803  1.0
  B  B18  1  0.674  0.547  0.688  1.0
  B  B19  1  0.223  0.941  0.425  1.0
  B  B20  1  0.277  0.946  0.918  1.0
  O  O21  1  0.599  0.176  0.098  1.0
  O  O22  1  0.288  0.090  0.308  1.0
  O  O23  1  0.728  0.085  0.422  1.0
  O  O24  1  0.902  0.173  0.599  1.0
  O  O25  1  0.242  0.101  0.798  1.0
  O  O26  1  0.769  0.401  0.190  1.0
  O  O27  1  0.779  0.086  0.926  1.0
  O  O28  1  0.334  0.415  0.185  1.0
  O  O29  1  0.431  0.322  0.442  1.0
  O  O30  1  0.964  0.663  0.071  1.0
  O  O31  1  0.714  0.396  0.685  1.0
  O  O32  1  0.819  0.586  0.317  1.0
  O  O33  1  0.156  0.421  0.672  1.0
  O  O34  1  0.283  0.602  0.308  1.0
  O  O35  1  0.061  0.321  0.930  1.0
  O  O36  1  0.592  0.681  0.560  1.0
  O  O37  1  0.686  0.573  0.822  1.0
  O  O38  1  0.203  0.931  0.067  1.0
  O  O39  1  0.214  0.597  0.811  1.0
  O  O40  1  0.763  0.902  0.198  1.0
  O  O41  1  0.104  0.832  0.388  1.0
  O  O42  1  0.265  0.919  0.574  1.0
  O  O43  1  0.734  0.904  0.687  1.0
  O  O44  1  0.372  0.820  0.898  1.0
[/CIF]
.
The structure described by Li9Cr4(BO3)8 crystallizes in the triclinic P1 space group. There are nine inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(15), one O(18), and one O(2) atom to form LiO4 tetrahedra that share  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Cr(3)O6 octahedra, corners with two equivalent Li(6)O4 tetrahedra, and  an edgeedge with one Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 60-74°. In the second Li site, Li(2) is bonded to one O(22), one O(4), one O(5), and one O(9) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Cr(4)O6 octahedra, corners with two equivalent Li(4)O4 tetrahedra,  an edgeedge with one Cr(2)O6 octahedra, and  an edgeedge with one Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 59-83°. In the third Li site, Li(3) is bonded to one O(11), one O(13), one O(5), and one O(9) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Cr(2)O6 octahedra,  an edgeedge with one Cr(2)O6 octahedra,  an edgeedge with one Li(2)O4 tetrahedra, and  an edgeedge with one Li(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 31-64°. In the fourth Li site, Li(4) is bonded to one O(11), one O(12), one O(4), and one O(9) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Cr(3)O6 octahedra,  a cornercorner with one Li(7)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra,  an edgeedge with one Cr(2)O6 octahedra, and  an edgeedge with one Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 37-85°. In the fifth Li site, Li(5) is bonded to one O(10), one O(19), one O(24), and one O(8) atom to form LiO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Cr(3)O6 octahedra,  an edgeedge with one Cr(4)O6 octahedra, and  an edgeedge with one Li(9)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 31-77°. In the sixth Li site, Li(6) is bonded to one O(1), one O(15), one O(17), and one O(6) atom to form LiO4 tetrahedra that share  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Cr(4)O6 octahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Li(9)O4 trigonal pyramid, and  an edgeedge with one Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 30-78°. In the seventh Li site, Li(7) is bonded to one O(12), one O(14), one O(16), and one O(20) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Cr(3)O6 octahedra,  a cornercorner with one Cr(4)O6 octahedra,  a cornercorner with one Li(4)O4 tetrahedra,  an edgeedge with one Cr(3)O6 octahedra, and  an edgeedge with one Li(8)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 39-69°. In the eighth Li site, Li(8) is bonded to one O(16), one O(20), one O(21), and one O(3) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Cr(4)O6 octahedra,  an edgeedge with one Cr(3)O6 octahedra, and  an edgeedge with one Li(7)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 58-77°. In the ninth Li site, Li(9) is bonded to one O(10), one O(17), one O(19), and one O(23) atom to form distorted LiO4 trigonal pyramids that share  a cornercorner with one Cr(3)O6 octahedra,  a cornercorner with one Cr(4)O6 octahedra,  a cornercorner with one Li(6)O4 tetrahedra,  an edgeedge with one Cr(4)O6 octahedra, and  an edgeedge with one Li(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 38-71°. There are four inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(1), one O(2), one O(3), one O(6), one O(8), and one O(9) atom to form distorted CrO6 octahedra that share  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(8)O4 tetrahedra,  an edgeedge with one Li(1)O4 tetrahedra, and  an edgeedge with one Li(6)O4 tetrahedra. In the second Cr site, Cr(2) is bonded to one O(11), one O(13), one O(15), one O(4), one O(5), and one O(7) atom to form distorted CrO6 octahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra,  an edgeedge with one Li(2)O4 tetrahedra,  an edgeedge with one Li(3)O4 tetrahedra, and  an edgeedge with one Li(4)O4 tetrahedra. In the third Cr site, Cr(3) is bonded to one O(10), one O(12), one O(14), one O(18), one O(20), and one O(21) atom to form CrO6 octahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(7)O4 tetrahedra,  a cornercorner with one Li(9)O4 trigonal pyramid,  an edgeedge with one Li(7)O4 tetrahedra, and  an edgeedge with one Li(8)O4 tetrahedra. In the fourth Cr site, Cr(4) is bonded to one O(16), one O(17), one O(19), one O(22), one O(23), and one O(24) atom to form CrO6 octahedra that share  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Li(7)O4 tetrahedra,  a cornercorner with one Li(8)O4 tetrahedra,  a cornercorner with one Li(9)O4 trigonal pyramid,  an edgeedge with one Li(5)O4 tetrahedra, and  an edgeedge with one Li(9)O4 trigonal pyramid. There are eight inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(1), one O(20), and one O(7) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(23), one O(3), and one O(4) atom. In the third B site, B(3) is bonded in a trigonal planar geometry to one O(14), one O(8), and one O(9) atom. In the fourth B site, B(4) is bonded in a trigonal planar geometry to one O(10), one O(12), and one O(6) atom. In the fifth B site, B(5) is bonded in a trigonal planar geometry to one O(13), one O(15), and one O(19) atom. In the sixth B site, B(6) is bonded in a trigonal planar geometry to one O(11), one O(16), and one O(17) atom. In the seventh B site, B(7) is bonded in a trigonal planar geometry to one O(2), one O(21), and one O(22) atom. In the eighth B site, B(8) is bonded in a trigonal planar geometry to one O(18), one O(24), and one O(5) atom. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), one Li(6), one Cr(1), and one B(1) atom to form distorted OLi2CrB trigonal pyramids that share  a cornercorner with one O(9)Li3CrB trigonal bipyramid and corners with two equivalent O(15)Li2CrB trigonal pyramids. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Li(1), one Cr(1), and one B(7) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Li(8), one Cr(1), and one B(2) atom. In the fourth O site, O(4) is bonded in a distorted see-saw-like geometry to one Li(2), one Li(4), one Cr(2), and one B(2) atom. In the fifth O site, O(5) is bonded in a rectangular see-saw-like geometry to one Li(2), one Li(3), one Cr(2), and one B(8) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Li(6), one Cr(1), and one B(4) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Cr(2) and one B(1) atom. In the eighth O site, O(8) is bonded in a distorted T-shaped geometry to one Li(5), one Cr(1), and one B(3) atom. In the ninth O site, O(9) is bonded to one Li(2), one Li(3), one Li(4), one Cr(1), and one B(3) atom to form a mixture of distorted edge and corner-sharing OLi3CrB trigonal bipyramids. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Li(5), one Li(9), one Cr(3), and one B(4) atom. In the eleventh O site, O(11) is bonded to one Li(3), one Li(4), one Cr(2), and one B(6) atom to form distorted OLi2CrB trigonal pyramids that share  a cornercorner with one O(15)Li2CrB trigonal pyramid and  an edgeedge with one O(9)Li3CrB trigonal bipyramid. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Li(4), one Li(7), one Cr(3), and one B(4) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal non-coplanar geometry to one Li(3), one Cr(2), and one B(5) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one Li(7), one Cr(3), and one B(3) atom. In the fifteenth O site, O(15) is bonded to one Li(1), one Li(6), one Cr(2), and one B(5) atom to form distorted corner-sharing OLi2CrB trigonal pyramids. In the sixteenth O site, O(16) is bonded in a 4-coordinate geometry to one Li(7), one Li(8), one Cr(4), and one B(6) atom. In the seventeenth O site, O(17) is bonded in a distorted see-saw-like geometry to one Li(6), one Li(9), one Cr(4), and one B(6) atom. In the eighteenth O site, O(18) is bonded in a trigonal planar geometry to one Li(1), one Cr(3), and one B(8) atom. In the nineteenth O site, O(19) is bonded in a 4-coordinate geometry to one Li(5), one Li(9), one Cr(4), and one B(5) atom. In the twentieth O site, O(20) is bonded in a 4-coordinate geometry to one Li(7), one Li(8), one Cr(3), and one B(1) atom. In the twenty-first O site, O(21) is bonded in a distorted T-shaped geometry to one Li(8), one Cr(3), and one B(7) atom. In the twenty-second O site, O(22) is bonded in a distorted trigonal planar geometry to one Li(2), one Cr(4), and one B(7) atom. In the twenty-third O site, O(23) is bonded in a 3-coordinate geometry to one Li(9), one Cr(4), and one B(2) atom. In the twenty-fourth O site, O(24) is bonded in a 3-coordinate geometry to one Li(5), one Cr(4), and one B(8) atom. is represented by the CIF file [CIF]
data_Li9Cr4(BO3)8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.039
_cell_length_b   8.944
_cell_length_c   9.460
_cell_angle_alpha   65.629
_cell_angle_beta   88.995
_cell_angle_gamma   89.377
_symmetry_Int_Tables_number   1
_cell_volume   465.364
_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  0.251  0.146  0.086  1.0
  Li  Li1  1  0.219  0.128  0.574  1.0
  Li  Li2  1  0.429  0.302  0.673  1.0
  Li  Li3  1  0.762  0.383  0.486  1.0
  Li  Li4  1  0.255  0.604  0.011  1.0
  Li  Li5  1  0.774  0.379  0.997  1.0
  Li  Li6  1  0.548  0.706  0.341  1.0
  Li  Li7  1  0.792  0.868  0.427  1.0
  Li  Li8  1  0.919  0.725  0.837  1.0
  Cr  Cr9  1  0.533  0.230  0.282  1.0
  Cr  Cr10  1  0.967  0.230  0.780  1.0
  Cr  Cr11  1  0.046  0.761  0.224  1.0
  Cr  Cr12  1  0.466  0.762  0.721  1.0
  B  B13  1  0.716  0.052  0.080  1.0
  B  B14  1  0.784  0.053  0.577  1.0
  B  B15  1  0.337  0.451  0.313  1.0
  B  B16  1  0.841  0.544  0.190  1.0
  B  B17  1  0.154  0.456  0.803  1.0
  B  B18  1  0.674  0.547  0.688  1.0
  B  B19  1  0.223  0.941  0.425  1.0
  B  B20  1  0.277  0.946  0.918  1.0
  O  O21  1  0.599  0.176  0.098  1.0
  O  O22  1  0.288  0.090  0.308  1.0
  O  O23  1  0.728  0.085  0.422  1.0
  O  O24  1  0.902  0.173  0.599  1.0
  O  O25  1  0.242  0.101  0.798  1.0
  O  O26  1  0.769  0.401  0.190  1.0
  O  O27  1  0.779  0.086  0.926  1.0
  O  O28  1  0.334  0.415  0.185  1.0
  O  O29  1  0.431  0.322  0.442  1.0
  O  O30  1  0.964  0.663  0.071  1.0
  O  O31  1  0.714  0.396  0.685  1.0
  O  O32  1  0.819  0.586  0.317  1.0
  O  O33  1  0.156  0.421  0.672  1.0
  O  O34  1  0.283  0.602  0.308  1.0
  O  O35  1  0.061  0.321  0.930  1.0
  O  O36  1  0.592  0.681  0.560  1.0
  O  O37  1  0.686  0.573  0.822  1.0
  O  O38  1  0.203  0.931  0.067  1.0
  O  O39  1  0.214  0.597  0.811  1.0
  O  O40  1  0.763  0.902  0.198  1.0
  O  O41  1  0.104  0.832  0.388  1.0
  O  O42  1  0.265  0.919  0.574  1.0
  O  O43  1  0.734  0.904  0.687  1.0
  O  O44  1  0.372  0.820  0.898  1.0
[/CIF]
.