The structure described by Li3CrSiCO7 crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), and two equivalent O(6) atoms. In the second Li site, Li(2) is bonded to one O(1), one O(3), one O(4), one O(5), and one O(6) atom to form distorted LiO5 trigonal bipyramids that share corners with two equivalent Cr(1)O6 octahedra, corners with three equivalent Si(1)O4 tetrahedra,  an edgeedge with one Cr(1)O6 octahedra, and edges with two equivalent Li(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 65-86°. Cr(1) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(6) atoms to form CrO6 octahedra that share corners with four equivalent Si(1)O4 tetrahedra, corners with four equivalent Li(2)O5 trigonal bipyramids, and edges with two equivalent Li(2)O5 trigonal bipyramids. Si(1) is bonded to one O(4), one O(5), and two equivalent O(6) atoms to form SiO4 tetrahedra that share corners with four equivalent Cr(1)O6 octahedra and corners with six equivalent Li(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 43-57°. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), two equivalent Li(2), and one C(1) atom to form a mixture of corner and edge-sharing OLi3C tetrahedra. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Li(1), one Cr(1), and one C(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Li(2), one Cr(1), and one C(1) atom. In the fourth O site, O(4) is bonded to two equivalent Li(2), one Cr(1), and one Si(1) atom to form distorted OLi2CrSi tetrahedra that share corners with six equivalent O(6)Li2CrSi trigonal pyramids and  an edgeedge with one O(1)Li3C tetrahedra. In the fifth O site, O(5) is bonded in a distorted see-saw-like geometry to two equivalent Li(2), one Cr(1), and one Si(1) atom. In the sixth O site, O(6) is bonded to one Li(1), one Li(2), one Cr(1), and one Si(1) atom to form distorted OLi2CrSi trigonal pyramids that share corners with two equivalent O(1)Li3C tetrahedra, corners with three equivalent O(4)Li2CrSi tetrahedra,  a cornercorner with one O(6)Li2CrSi trigonal pyramid, and  an edgeedge with one O(6)Li2CrSi trigonal pyramid. is represented by the CIF file [CIF]
data_Li3CrSiCO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.046
_cell_length_b   8.308
_cell_length_c   6.469
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   85.161
_symmetry_Int_Tables_number   1
_cell_volume   270.203
_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
  Li  Li0  1  0.775  0.108  0.250  1.0
  Li  Li1  1  0.225  0.892  0.750  1.0
  Li  Li2  1  0.239  0.293  0.034  1.0
  Li  Li3  1  0.239  0.293  0.466  1.0
  Li  Li4  1  0.761  0.707  0.534  1.0
  Li  Li5  1  0.761  0.707  0.966  1.0
  Cr  Cr6  1  0.199  0.679  0.250  1.0
  Cr  Cr7  1  0.801  0.321  0.750  1.0
  Si  Si8  1  0.718  0.421  0.250  1.0
  Si  Si9  1  0.282  0.579  0.750  1.0
  C  C10  1  0.698  0.032  0.750  1.0
  C  C11  1  0.302  0.968  0.250  1.0
  O  O12  1  0.363  0.115  0.250  1.0
  O  O13  1  0.637  0.885  0.750  1.0
  O  O14  1  0.943  0.071  0.750  1.0
  O  O15  1  0.057  0.929  0.250  1.0
  O  O16  1  0.516  0.153  0.750  1.0
  O  O17  1  0.485  0.847  0.250  1.0
  O  O18  1  0.389  0.455  0.250  1.0
  O  O19  1  0.611  0.545  0.750  1.0
  O  O20  1  0.159  0.403  0.750  1.0
  O  O21  1  0.841  0.597  0.250  1.0
  O  O22  1  0.821  0.304  0.056  1.0
  O  O23  1  0.821  0.304  0.444  1.0
  O  O24  1  0.179  0.696  0.556  1.0
  O  O25  1  0.179  0.696  0.944  1.0
[/CIF]
.
The structure described by Li3CrSiCO7 crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), and two equivalent O(6) atoms. In the second Li site, Li(2) is bonded to one O(1), one O(3), one O(4), one O(5), and one O(6) atom to form distorted LiO5 trigonal bipyramids that share corners with two equivalent Cr(1)O6 octahedra, corners with three equivalent Si(1)O4 tetrahedra,  an edgeedge with one Cr(1)O6 octahedra, and edges with two equivalent Li(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 65-86°. Cr(1) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(6) atoms to form CrO6 octahedra that share corners with four equivalent Si(1)O4 tetrahedra, corners with four equivalent Li(2)O5 trigonal bipyramids, and edges with two equivalent Li(2)O5 trigonal bipyramids. Si(1) is bonded to one O(4), one O(5), and two equivalent O(6) atoms to form SiO4 tetrahedra that share corners with four equivalent Cr(1)O6 octahedra and corners with six equivalent Li(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 43-57°. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), two equivalent Li(2), and one C(1) atom to form a mixture of corner and edge-sharing OLi3C tetrahedra. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Li(1), one Cr(1), and one C(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Li(2), one Cr(1), and one C(1) atom. In the fourth O site, O(4) is bonded to two equivalent Li(2), one Cr(1), and one Si(1) atom to form distorted OLi2CrSi tetrahedra that share corners with six equivalent O(6)Li2CrSi trigonal pyramids and  an edgeedge with one O(1)Li3C tetrahedra. In the fifth O site, O(5) is bonded in a distorted see-saw-like geometry to two equivalent Li(2), one Cr(1), and one Si(1) atom. In the sixth O site, O(6) is bonded to one Li(1), one Li(2), one Cr(1), and one Si(1) atom to form distorted OLi2CrSi trigonal pyramids that share corners with two equivalent O(1)Li3C tetrahedra, corners with three equivalent O(4)Li2CrSi tetrahedra,  a cornercorner with one O(6)Li2CrSi trigonal pyramid, and  an edgeedge with one O(6)Li2CrSi trigonal pyramid. is represented by the CIF file [CIF]
data_Li3CrSiCO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.046
_cell_length_b   8.308
_cell_length_c   6.469
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   85.161
_symmetry_Int_Tables_number   1
_cell_volume   270.203
_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
  Li  Li0  1  0.775  0.108  0.250  1.0
  Li  Li1  1  0.225  0.892  0.750  1.0
  Li  Li2  1  0.239  0.293  0.034  1.0
  Li  Li3  1  0.239  0.293  0.466  1.0
  Li  Li4  1  0.761  0.707  0.534  1.0
  Li  Li5  1  0.761  0.707  0.966  1.0
  Cr  Cr6  1  0.199  0.679  0.250  1.0
  Cr  Cr7  1  0.801  0.321  0.750  1.0
  Si  Si8  1  0.718  0.421  0.250  1.0
  Si  Si9  1  0.282  0.579  0.750  1.0
  C  C10  1  0.698  0.032  0.750  1.0
  C  C11  1  0.302  0.968  0.250  1.0
  O  O12  1  0.363  0.115  0.250  1.0
  O  O13  1  0.637  0.885  0.750  1.0
  O  O14  1  0.943  0.071  0.750  1.0
  O  O15  1  0.057  0.929  0.250  1.0
  O  O16  1  0.516  0.153  0.750  1.0
  O  O17  1  0.485  0.847  0.250  1.0
  O  O18  1  0.389  0.455  0.250  1.0
  O  O19  1  0.611  0.545  0.750  1.0
  O  O20  1  0.159  0.403  0.750  1.0
  O  O21  1  0.841  0.597  0.250  1.0
  O  O22  1  0.821  0.304  0.056  1.0
  O  O23  1  0.821  0.304  0.444  1.0
  O  O24  1  0.179  0.696  0.556  1.0
  O  O25  1  0.179  0.696  0.944  1.0
[/CIF]
.