The material described by Li2Cr(SiO3)2 crystallizes in the orthorhombic Fdd2 space group. Li(1) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form distorted LiO4 trigonal pyramids that share corners with three equivalent Cr(1)O4 tetrahedra, corners with five equivalent Si(1)O4 tetrahedra, and corners with two equivalent Li(1)O4 trigonal pyramids. Cr(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form CrO4 tetrahedra that share corners with four equivalent Si(1)O4 tetrahedra and corners with six equivalent Li(1)O4 trigonal pyramids. Si(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form SiO4 tetrahedra that share corners with two equivalent Cr(1)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, and corners with five equivalent Li(1)O4 trigonal pyramids. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Li(1), one Cr(1), and one Si(1) atom. In the second O site, O(2) is bonded to two equivalent Li(1), one Cr(1), and one Si(1) atom to form distorted corner-sharing OLi2CrSi tetrahedra. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Li(1) and two equivalent Si(1) atoms. is represented by the CIF card [CIF]
data_Li2Cr(SiO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.819
_cell_length_b   10.789
_cell_length_c   5.110
_cell_angle_alpha   76.651
_cell_angle_beta   75.992
_cell_angle_gamma   27.357
_symmetry_Int_Tables_number   1
_cell_volume   265.755
_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  0.429  0.904  0.110  1.0
  Li  Li1  1  0.346  0.821  0.693  1.0
  Li  Li2  1  0.693  0.140  0.346  1.0
  Li  Li3  1  0.110  0.557  0.429  1.0
  Cr  Cr4  1  0.245  0.755  0.245  1.0
  Cr  Cr5  1  0.495  0.005  0.495  1.0
  Si  Si6  1  0.931  0.400  0.508  1.0
  Si  Si7  1  0.850  0.319  0.089  1.0
  Si  Si8  1  0.089  0.742  0.850  1.0
  Si  Si9  1  0.508  0.161  0.931  1.0
  O  O10  1  0.898  0.581  0.436  1.0
  O  O11  1  0.244  0.075  0.498  1.0
  O  O12  1  0.759  0.488  0.805  1.0
  O  O13  1  0.762  0.491  0.302  1.0
  O  O14  1  0.175  0.006  0.067  1.0
  O  O15  1  0.669  0.352  0.165  1.0
  O  O16  1  0.165  0.814  0.669  1.0
  O  O17  1  0.067  0.752  0.175  1.0
  O  O18  1  0.302  0.445  0.762  1.0
  O  O19  1  0.805  0.948  0.759  1.0
  O  O20  1  0.498  0.183  0.244  1.0
  O  O21  1  0.436  0.085  0.898  1.0
[/CIF]
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The material described by Li2Cr(SiO3)2 crystallizes in the orthorhombic Fdd2 space group. Li(1) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form distorted LiO4 trigonal pyramids that share corners with three equivalent Cr(1)O4 tetrahedra, corners with five equivalent Si(1)O4 tetrahedra, and corners with two equivalent Li(1)O4 trigonal pyramids. Cr(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form CrO4 tetrahedra that share corners with four equivalent Si(1)O4 tetrahedra and corners with six equivalent Li(1)O4 trigonal pyramids. Si(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form SiO4 tetrahedra that share corners with two equivalent Cr(1)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, and corners with five equivalent Li(1)O4 trigonal pyramids. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Li(1), one Cr(1), and one Si(1) atom. In the second O site, O(2) is bonded to two equivalent Li(1), one Cr(1), and one Si(1) atom to form distorted corner-sharing OLi2CrSi tetrahedra. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Li(1) and two equivalent Si(1) atoms. is represented by the CIF card [CIF]
data_Li2Cr(SiO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.819
_cell_length_b   10.789
_cell_length_c   5.110
_cell_angle_alpha   76.651
_cell_angle_beta   75.992
_cell_angle_gamma   27.357
_symmetry_Int_Tables_number   1
_cell_volume   265.755
_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  0.429  0.904  0.110  1.0
  Li  Li1  1  0.346  0.821  0.693  1.0
  Li  Li2  1  0.693  0.140  0.346  1.0
  Li  Li3  1  0.110  0.557  0.429  1.0
  Cr  Cr4  1  0.245  0.755  0.245  1.0
  Cr  Cr5  1  0.495  0.005  0.495  1.0
  Si  Si6  1  0.931  0.400  0.508  1.0
  Si  Si7  1  0.850  0.319  0.089  1.0
  Si  Si8  1  0.089  0.742  0.850  1.0
  Si  Si9  1  0.508  0.161  0.931  1.0
  O  O10  1  0.898  0.581  0.436  1.0
  O  O11  1  0.244  0.075  0.498  1.0
  O  O12  1  0.759  0.488  0.805  1.0
  O  O13  1  0.762  0.491  0.302  1.0
  O  O14  1  0.175  0.006  0.067  1.0
  O  O15  1  0.669  0.352  0.165  1.0
  O  O16  1  0.165  0.814  0.669  1.0
  O  O17  1  0.067  0.752  0.175  1.0
  O  O18  1  0.302  0.445  0.762  1.0
  O  O19  1  0.805  0.948  0.759  1.0
  O  O20  1  0.498  0.183  0.244  1.0
  O  O21  1  0.436  0.085  0.898  1.0
[/CIF]
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