The material described by Li3CoBSiO7 crystallizes in the monoclinic Pm space group. There are eight inequivalent Li sites. In the first Li site, Li(1) is bonded in a 4-coordinate geometry to one O(1), one O(8), and two equivalent O(21) atoms. In the second Li site, Li(2) is bonded in a 4-coordinate geometry to one O(2), one O(7), and two equivalent O(22) atoms. In the third Li site, Li(3) is bonded in a 4-coordinate geometry to one O(3), one O(6), and two equivalent O(23) atoms. In the fourth Li site, Li(4) is bonded in a 4-coordinate geometry to one O(4), one O(5), and two equivalent O(24) atoms. In the fifth Li site, Li(5) is bonded in a 6-coordinate geometry to one O(1), one O(13), one O(17), one O(21), one O(5), and one O(9) atom. In the sixth Li site, Li(6) is bonded in a 6-coordinate geometry to one O(10), one O(14), one O(18), one O(2), one O(22), and one O(6) atom. In the seventh Li site, Li(7) is bonded in a 6-coordinate geometry to one O(11), one O(15), one O(19), one O(23), one O(3), and one O(7) atom. In the eighth Li site, Li(8) is bonded in a 6-coordinate geometry to one O(12), one O(16), one O(20), one O(24), one O(4), and one O(8) atom. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(10), one O(16), one O(18), one O(6), and two equivalent O(22) atoms to form CoO6 octahedra that share corners with two equivalent Si(2)O4 tetrahedra and corners with two equivalent Si(4)O4 tetrahedra. In the second Co site, Co(2) is bonded to one O(12), one O(14), one O(20), one O(8), and two equivalent O(24) atoms to form CoO6 octahedra that share corners with two equivalent Si(2)O4 tetrahedra and corners with two equivalent Si(4)O4 tetrahedra. In the third Co site, Co(3) is bonded to one O(15), one O(17), one O(5), one O(9), and two equivalent O(21) atoms to form distorted CoO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra and corners with two equivalent Si(3)O4 tetrahedra. In the fourth Co site, Co(4) is bonded to one O(11), one O(13), one O(19), one O(7), and two equivalent O(23) atoms to form distorted CoO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra and corners with two equivalent Si(3)O4 tetrahedra. There are four inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(4), one O(5), and one O(9) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(10), one O(3), and one O(6) atom. In the third B site, B(3) is bonded in a trigonal planar geometry to one O(11), one O(2), and one O(7) atom. In the fourth B site, B(4) is bonded in a trigonal planar geometry to one O(1), one O(12), and one O(8) atom. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(13), one O(19), and two equivalent O(21) atoms to form SiO4 tetrahedra that share corners with two equivalent Co(3)O6 octahedra and corners with two equivalent Co(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-52°. In the second Si site, Si(2) is bonded to one O(14), one O(20), and two equivalent O(22) atoms to form SiO4 tetrahedra that share corners with two equivalent Co(1)O6 octahedra and corners with two equivalent Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-54°. In the third Si site, Si(3) is bonded to one O(15), one O(17), and two equivalent O(23) atoms to form SiO4 tetrahedra that share corners with two equivalent Co(3)O6 octahedra and corners with two equivalent Co(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-52°. In the fourth Si site, Si(4) is bonded to one O(16), one O(18), and two equivalent O(24) atoms to form SiO4 tetrahedra that share corners with two equivalent Co(1)O6 octahedra and corners with two equivalent Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-52°. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), two equivalent Li(5), and one B(4) atom to form OLi3B tetrahedra that share  a cornercorner with one O(12)Li2CoB tetrahedra, corners with two equivalent O(9)Li2CoB tetrahedra, and corners with four equivalent O(21)Li2CoSi trigonal pyramids. In the second O site, O(2) is bonded to one Li(2), two equivalent Li(6), and one B(3) atom to form OLi3B tetrahedra that share  a cornercorner with one O(11)Li2CoB tetrahedra, corners with two equivalent O(10)Li2CoB tetrahedra, and corners with four equivalent O(22)Li2CoSi trigonal pyramids. In the third O site, O(3) is bonded to one Li(3), two equivalent Li(7), and one B(2) atom to form OLi3B tetrahedra that share  a cornercorner with one O(10)Li2CoB tetrahedra, corners with two equivalent O(11)Li2CoB tetrahedra, and corners with four equivalent O(23)Li2CoSi trigonal pyramids. In the fourth O site, O(4) is bonded to one Li(4), two equivalent Li(8), and one B(1) atom to form OLi3B tetrahedra that share  a cornercorner with one O(9)Li2CoB tetrahedra, corners with two equivalent O(12)Li2CoB tetrahedra, and corners with four equivalent O(24)Li2CoSi trigonal pyramids. In the fifth O site, O(5) is bonded in a 2-coordinate geometry to one Li(4), two equivalent Li(5), one Co(3), and one B(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Li(3), two equivalent Li(6), one Co(1), and one B(2) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Li(2), two equivalent Li(7), one Co(4), and one B(3) atom. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one Li(1), two equivalent Li(8), one Co(2), and one B(4) atom. In the ninth O site, O(9) is bonded to two equivalent Li(5), one Co(3), and one B(1) atom to form distorted OLi2CoB tetrahedra that share  a cornercorner with one O(4)Li3B tetrahedra, corners with two equivalent O(1)Li3B tetrahedra, and corners with four equivalent O(21)Li2CoSi trigonal pyramids. In the tenth O site, O(10) is bonded to two equivalent Li(6), one Co(1), and one B(2) atom to form distorted OLi2CoB tetrahedra that share  a cornercorner with one O(3)Li3B tetrahedra, corners with two equivalent O(2)Li3B tetrahedra, and corners with four equivalent O(22)Li2CoSi trigonal pyramids. In the eleventh O site, O(11) is bonded to two equivalent Li(7), one Co(4), and one B(3) atom to form distorted OLi2CoB tetrahedra that share  a cornercorner with one O(2)Li3B tetrahedra, corners with two equivalent O(3)Li3B tetrahedra, and corners with four equivalent O(23)Li2CoSi trigonal pyramids. In the twelfth O site, O(12) is bonded to two equivalent Li(8), one Co(2), and one B(4) atom to form distorted OLi2CoB tetrahedra that share  a cornercorner with one O(1)Li3B tetrahedra, corners with two equivalent O(4)Li3B tetrahedra, and corners with four equivalent O(24)Li2CoSi trigonal pyramids. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to two equivalent Li(5), one Co(4), and one Si(1) atom. In the fourteenth O site, O(14) is bonded in a 4-coordinate geometry to two equivalent Li(6), one Co(2), and one Si(2) atom. In the fifteenth O site, O(15) is bonded in a 4-coordinate geometry to two equivalent Li(7), one Co(3), and one Si(3) atom. In the sixteenth O site, O(16) is bonded in a 4-coordinate geometry to two equivalent Li(8), one Co(1), and one Si(4) atom. In the seventeenth O site, O(17) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Li(5), one Co(3), and one Si(3) atom. In the eighteenth O site, O(18) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Li(6), one Co(1), and one Si(4) atom. In the nineteenth O site, O(19) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Li(7), one Co(4), and one Si(1) atom. In the twentieth O site, O(20) is bonded in a rectangular see-saw-like geometry to two equivalent Li(8), one Co(2), and one Si(2) atom. In the twenty-first O site, O(21) is bonded to one Li(1), one Li(5), one Co(3), and one Si(1) atom to form distorted OLi2CoSi trigonal pyramids that share corners with two equivalent O(9)Li2CoB tetrahedra, corners with two equivalent O(1)Li3B tetrahedra,  a cornercorner with one O(21)Li2CoSi trigonal pyramid, and  an edgeedge with one O(21)Li2CoSi trigonal pyramid. In the twenty-second O site, O(22) is bonded to one Li(2), one Li(6), one Co(1), and one Si(2) atom to form distorted OLi2CoSi trigonal pyramids that share corners with two equivalent O(10)Li2CoB tetrahedra, corners with two equivalent O(2)Li3B tetrahedra,  a cornercorner with one O(22)Li2CoSi trigonal pyramid, and  an edgeedge with one O(22)Li2CoSi trigonal pyramid. In the twenty-third O site, O(23) is bonded to one Li(3), one Li(7), one Co(4), and one Si(3) atom to form distorted OLi2CoSi trigonal pyramids that share corners with two equivalent O(11)Li2CoB tetrahedra, corners with two equivalent O(3)Li3B tetrahedra,  a cornercorner with one O(23)Li2CoSi trigonal pyramid, and  an edgeedge with one O(23)Li2CoSi trigonal pyramid. In the twenty-fourth O site, O(24) is bonded to one Li(4), one Li(8), one Co(2), and one Si(4) atom to form distorted OLi2CoSi trigonal pyramids that share corners with two equivalent O(12)Li2CoB tetrahedra, corners with two equivalent O(4)Li3B tetrahedra,  a cornercorner with one O(24)Li2CoSi trigonal pyramid, and  an edgeedge with one O(24)Li2CoSi trigonal pyramid. is represented by the CIF file [CIF]
data_Li3CoSiBO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.026
_cell_length_b   6.232
_cell_length_c   8.409
_cell_angle_alpha   90.002
_cell_angle_beta   85.630
_cell_angle_gamma   90.003
_symmetry_Int_Tables_number   1
_cell_volume   262.599
_cell_formula_units_Z   2
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
  B  B0  1  0.279  0.250  0.958  1.0
  B  B1  1  0.724  0.750  0.040  1.0
  Co  Co2  1  0.196  0.250  0.679  1.0
  Co  Co3  1  0.804  0.750  0.324  1.0
  Li  Li4  1  0.237  0.750  0.894  1.0
  Li  Li5  1  0.763  0.250  0.106  1.0
  Li  Li6  1  0.747  0.997  0.750  1.0
  Li  Li7  1  0.747  0.504  0.750  1.0
  Li  Li8  1  0.253  0.497  0.249  1.0
  Li  Li9  1  0.253  0.004  0.249  1.0
  O  O10  1  0.633  0.750  0.894  1.0
  O  O11  1  0.364  0.250  0.106  1.0
  O  O12  1  0.020  0.250  0.914  1.0
  O  O13  1  0.984  0.750  0.081  1.0
  O  O14  1  0.463  0.250  0.821  1.0
  O  O15  1  0.539  0.750  0.177  1.0
  O  O16  1  0.601  0.750  0.537  1.0
  O  O17  1  0.397  0.250  0.468  1.0
  O  O18  1  0.858  0.250  0.599  1.0
  O  O19  1  0.145  0.750  0.402  1.0
  O  O20  1  0.172  0.946  0.696  1.0
  O  O21  1  0.172  0.554  0.696  1.0
  O  O22  1  0.825  0.445  0.306  1.0
  O  O23  1  0.825  0.055  0.306  1.0
  Si  Si24  1  0.278  0.750  0.573  1.0
  Si  Si25  1  0.721  0.250  0.429  1.0
[/CIF]
.
The material described by Li3CoBSiO7 crystallizes in the monoclinic Pm space group. There are eight inequivalent Li sites. In the first Li site, Li(1) is bonded in a 4-coordinate geometry to one O(1), one O(8), and two equivalent O(21) atoms. In the second Li site, Li(2) is bonded in a 4-coordinate geometry to one O(2), one O(7), and two equivalent O(22) atoms. In the third Li site, Li(3) is bonded in a 4-coordinate geometry to one O(3), one O(6), and two equivalent O(23) atoms. In the fourth Li site, Li(4) is bonded in a 4-coordinate geometry to one O(4), one O(5), and two equivalent O(24) atoms. In the fifth Li site, Li(5) is bonded in a 6-coordinate geometry to one O(1), one O(13), one O(17), one O(21), one O(5), and one O(9) atom. In the sixth Li site, Li(6) is bonded in a 6-coordinate geometry to one O(10), one O(14), one O(18), one O(2), one O(22), and one O(6) atom. In the seventh Li site, Li(7) is bonded in a 6-coordinate geometry to one O(11), one O(15), one O(19), one O(23), one O(3), and one O(7) atom. In the eighth Li site, Li(8) is bonded in a 6-coordinate geometry to one O(12), one O(16), one O(20), one O(24), one O(4), and one O(8) atom. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(10), one O(16), one O(18), one O(6), and two equivalent O(22) atoms to form CoO6 octahedra that share corners with two equivalent Si(2)O4 tetrahedra and corners with two equivalent Si(4)O4 tetrahedra. In the second Co site, Co(2) is bonded to one O(12), one O(14), one O(20), one O(8), and two equivalent O(24) atoms to form CoO6 octahedra that share corners with two equivalent Si(2)O4 tetrahedra and corners with two equivalent Si(4)O4 tetrahedra. In the third Co site, Co(3) is bonded to one O(15), one O(17), one O(5), one O(9), and two equivalent O(21) atoms to form distorted CoO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra and corners with two equivalent Si(3)O4 tetrahedra. In the fourth Co site, Co(4) is bonded to one O(11), one O(13), one O(19), one O(7), and two equivalent O(23) atoms to form distorted CoO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra and corners with two equivalent Si(3)O4 tetrahedra. There are four inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(4), one O(5), and one O(9) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(10), one O(3), and one O(6) atom. In the third B site, B(3) is bonded in a trigonal planar geometry to one O(11), one O(2), and one O(7) atom. In the fourth B site, B(4) is bonded in a trigonal planar geometry to one O(1), one O(12), and one O(8) atom. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(13), one O(19), and two equivalent O(21) atoms to form SiO4 tetrahedra that share corners with two equivalent Co(3)O6 octahedra and corners with two equivalent Co(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-52°. In the second Si site, Si(2) is bonded to one O(14), one O(20), and two equivalent O(22) atoms to form SiO4 tetrahedra that share corners with two equivalent Co(1)O6 octahedra and corners with two equivalent Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-54°. In the third Si site, Si(3) is bonded to one O(15), one O(17), and two equivalent O(23) atoms to form SiO4 tetrahedra that share corners with two equivalent Co(3)O6 octahedra and corners with two equivalent Co(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-52°. In the fourth Si site, Si(4) is bonded to one O(16), one O(18), and two equivalent O(24) atoms to form SiO4 tetrahedra that share corners with two equivalent Co(1)O6 octahedra and corners with two equivalent Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-52°. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), two equivalent Li(5), and one B(4) atom to form OLi3B tetrahedra that share  a cornercorner with one O(12)Li2CoB tetrahedra, corners with two equivalent O(9)Li2CoB tetrahedra, and corners with four equivalent O(21)Li2CoSi trigonal pyramids. In the second O site, O(2) is bonded to one Li(2), two equivalent Li(6), and one B(3) atom to form OLi3B tetrahedra that share  a cornercorner with one O(11)Li2CoB tetrahedra, corners with two equivalent O(10)Li2CoB tetrahedra, and corners with four equivalent O(22)Li2CoSi trigonal pyramids. In the third O site, O(3) is bonded to one Li(3), two equivalent Li(7), and one B(2) atom to form OLi3B tetrahedra that share  a cornercorner with one O(10)Li2CoB tetrahedra, corners with two equivalent O(11)Li2CoB tetrahedra, and corners with four equivalent O(23)Li2CoSi trigonal pyramids. In the fourth O site, O(4) is bonded to one Li(4), two equivalent Li(8), and one B(1) atom to form OLi3B tetrahedra that share  a cornercorner with one O(9)Li2CoB tetrahedra, corners with two equivalent O(12)Li2CoB tetrahedra, and corners with four equivalent O(24)Li2CoSi trigonal pyramids. In the fifth O site, O(5) is bonded in a 2-coordinate geometry to one Li(4), two equivalent Li(5), one Co(3), and one B(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Li(3), two equivalent Li(6), one Co(1), and one B(2) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Li(2), two equivalent Li(7), one Co(4), and one B(3) atom. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one Li(1), two equivalent Li(8), one Co(2), and one B(4) atom. In the ninth O site, O(9) is bonded to two equivalent Li(5), one Co(3), and one B(1) atom to form distorted OLi2CoB tetrahedra that share  a cornercorner with one O(4)Li3B tetrahedra, corners with two equivalent O(1)Li3B tetrahedra, and corners with four equivalent O(21)Li2CoSi trigonal pyramids. In the tenth O site, O(10) is bonded to two equivalent Li(6), one Co(1), and one B(2) atom to form distorted OLi2CoB tetrahedra that share  a cornercorner with one O(3)Li3B tetrahedra, corners with two equivalent O(2)Li3B tetrahedra, and corners with four equivalent O(22)Li2CoSi trigonal pyramids. In the eleventh O site, O(11) is bonded to two equivalent Li(7), one Co(4), and one B(3) atom to form distorted OLi2CoB tetrahedra that share  a cornercorner with one O(2)Li3B tetrahedra, corners with two equivalent O(3)Li3B tetrahedra, and corners with four equivalent O(23)Li2CoSi trigonal pyramids. In the twelfth O site, O(12) is bonded to two equivalent Li(8), one Co(2), and one B(4) atom to form distorted OLi2CoB tetrahedra that share  a cornercorner with one O(1)Li3B tetrahedra, corners with two equivalent O(4)Li3B tetrahedra, and corners with four equivalent O(24)Li2CoSi trigonal pyramids. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to two equivalent Li(5), one Co(4), and one Si(1) atom. In the fourteenth O site, O(14) is bonded in a 4-coordinate geometry to two equivalent Li(6), one Co(2), and one Si(2) atom. In the fifteenth O site, O(15) is bonded in a 4-coordinate geometry to two equivalent Li(7), one Co(3), and one Si(3) atom. In the sixteenth O site, O(16) is bonded in a 4-coordinate geometry to two equivalent Li(8), one Co(1), and one Si(4) atom. In the seventeenth O site, O(17) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Li(5), one Co(3), and one Si(3) atom. In the eighteenth O site, O(18) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Li(6), one Co(1), and one Si(4) atom. In the nineteenth O site, O(19) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Li(7), one Co(4), and one Si(1) atom. In the twentieth O site, O(20) is bonded in a rectangular see-saw-like geometry to two equivalent Li(8), one Co(2), and one Si(2) atom. In the twenty-first O site, O(21) is bonded to one Li(1), one Li(5), one Co(3), and one Si(1) atom to form distorted OLi2CoSi trigonal pyramids that share corners with two equivalent O(9)Li2CoB tetrahedra, corners with two equivalent O(1)Li3B tetrahedra,  a cornercorner with one O(21)Li2CoSi trigonal pyramid, and  an edgeedge with one O(21)Li2CoSi trigonal pyramid. In the twenty-second O site, O(22) is bonded to one Li(2), one Li(6), one Co(1), and one Si(2) atom to form distorted OLi2CoSi trigonal pyramids that share corners with two equivalent O(10)Li2CoB tetrahedra, corners with two equivalent O(2)Li3B tetrahedra,  a cornercorner with one O(22)Li2CoSi trigonal pyramid, and  an edgeedge with one O(22)Li2CoSi trigonal pyramid. In the twenty-third O site, O(23) is bonded to one Li(3), one Li(7), one Co(4), and one Si(3) atom to form distorted OLi2CoSi trigonal pyramids that share corners with two equivalent O(11)Li2CoB tetrahedra, corners with two equivalent O(3)Li3B tetrahedra,  a cornercorner with one O(23)Li2CoSi trigonal pyramid, and  an edgeedge with one O(23)Li2CoSi trigonal pyramid. In the twenty-fourth O site, O(24) is bonded to one Li(4), one Li(8), one Co(2), and one Si(4) atom to form distorted OLi2CoSi trigonal pyramids that share corners with two equivalent O(12)Li2CoB tetrahedra, corners with two equivalent O(4)Li3B tetrahedra,  a cornercorner with one O(24)Li2CoSi trigonal pyramid, and  an edgeedge with one O(24)Li2CoSi trigonal pyramid. is represented by the CIF file [CIF]
data_Li3CoSiBO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.026
_cell_length_b   6.232
_cell_length_c   8.409
_cell_angle_alpha   90.002
_cell_angle_beta   85.630
_cell_angle_gamma   90.003
_symmetry_Int_Tables_number   1
_cell_volume   262.599
_cell_formula_units_Z   2
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
  B  B0  1  0.279  0.250  0.958  1.0
  B  B1  1  0.724  0.750  0.040  1.0
  Co  Co2  1  0.196  0.250  0.679  1.0
  Co  Co3  1  0.804  0.750  0.324  1.0
  Li  Li4  1  0.237  0.750  0.894  1.0
  Li  Li5  1  0.763  0.250  0.106  1.0
  Li  Li6  1  0.747  0.997  0.750  1.0
  Li  Li7  1  0.747  0.504  0.750  1.0
  Li  Li8  1  0.253  0.497  0.249  1.0
  Li  Li9  1  0.253  0.004  0.249  1.0
  O  O10  1  0.633  0.750  0.894  1.0
  O  O11  1  0.364  0.250  0.106  1.0
  O  O12  1  0.020  0.250  0.914  1.0
  O  O13  1  0.984  0.750  0.081  1.0
  O  O14  1  0.463  0.250  0.821  1.0
  O  O15  1  0.539  0.750  0.177  1.0
  O  O16  1  0.601  0.750  0.537  1.0
  O  O17  1  0.397  0.250  0.468  1.0
  O  O18  1  0.858  0.250  0.599  1.0
  O  O19  1  0.145  0.750  0.402  1.0
  O  O20  1  0.172  0.946  0.696  1.0
  O  O21  1  0.172  0.554  0.696  1.0
  O  O22  1  0.825  0.445  0.306  1.0
  O  O23  1  0.825  0.055  0.306  1.0
  Si  Si24  1  0.278  0.750  0.573  1.0
  Si  Si25  1  0.721  0.250  0.429  1.0
[/CIF]
.