The material structure described by Li2CuSnO4 is Caswellsilverite-derived structured and crystallizes in the tetragonal I-4m2 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to two O(1,1) and four equivalent O(2) atoms to form LiO6 octahedra that share corners with two equivalent Cu(1)O6 octahedra, corners with four equivalent Li(1)O6 octahedra, edges with four equivalent Li(2)O6 octahedra, edges with four equivalent Cu(1)O6 octahedra, and edges with four equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-12°. In the second Li site, Li(2) is bonded to two O(2,2) and four equivalent O(1) atoms to form LiO6 octahedra that share corners with two equivalent Sn(1)O6 octahedra, corners with four equivalent Li(2)O6 octahedra, edges with four equivalent Li(1)O6 octahedra, edges with four equivalent Cu(1)O6 octahedra, and edges with four equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. Cu(1) is bonded to two O(1,1) and four equivalent O(2) atoms to form CuO6 octahedra that share corners with two equivalent Li(1)O6 octahedra, corners with four equivalent Cu(1)O6 octahedra, edges with four equivalent Li(1)O6 octahedra, edges with four equivalent Li(2)O6 octahedra, and edges with four equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-12°. Sn(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form SnO6 octahedra that share corners with two equivalent Li(2)O6 octahedra, corners with four equivalent Sn(1)O6 octahedra, edges with four equivalent Li(1)O6 octahedra, edges with four equivalent Li(2)O6 octahedra, and edges with four equivalent Cu(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), two equivalent Li(2), one Cu(1), and two equivalent Sn(1) atoms to form OLi3CuSn2 octahedra that share corners with six O(1,1)Li3CuSn2 octahedra; edges with four equivalent O(1)Li3CuSn2 octahedra; and edges with eight O(2,2)Li3Cu2Sn octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the second O site, O(2) is bonded to one Li(2), two equivalent Li(1), two equivalent Cu(1), and one Sn(1) atom to form distorted OLi3Cu2Sn octahedra that share corners with six O(2,2)Li3Cu2Sn octahedra; edges with four equivalent O(2)Li3Cu2Sn octahedra; and edges with eight O(1,1,1)Li3CuSn2 octahedra. The corner-sharing octahedral tilt angles range from 0-12°. In the third O site, O(1) is bonded to one Li(1), two equivalent Li(2), one Cu(1), and two equivalent Sn(1) atoms to form OLi3CuSn2 octahedra that share corners with six O(1,1)Li3CuSn2 octahedra; edges with four equivalent O(1)Li3CuSn2 octahedra; and edges with eight O(2,2)Li3Cu2Sn octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the fourth O site, O(1) is bonded to one Li(1), two equivalent Li(2), one Cu(1), and two equivalent Sn(1) atoms to form OLi3CuSn2 octahedra that share corners with six O(1,1)Li3CuSn2 octahedra; edges with four equivalent O(1)Li3CuSn2 octahedra; and edges with eight O(2,2)Li3Cu2Sn octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the fifth O site, O(2) is bonded to one Li(2), two equivalent Li(1), two equivalent Cu(1), and one Sn(1) atom to form distorted OLi3Cu2Sn octahedra that share corners with six O(2,2)Li3Cu2Sn octahedra; edges with four equivalent O(2)Li3Cu2Sn octahedra; and edges with eight O(1,1,1)Li3CuSn2 octahedra. The corner-sharing octahedral tilt angles range from 0-12°. is represented by the CIF file [CIF]
data_Li2CuSnO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.461
_cell_length_b   5.461
_cell_length_c   5.461
_cell_angle_alpha   135.055
_cell_angle_beta   135.055
_cell_angle_gamma   65.445
_symmetry_Int_Tables_number   1
_cell_volume   80.076
_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  0.250  0.750  0.500  1.0
  Li  Li1  1  0.500  0.500  0.000  1.0
  Cu  Cu2  1  0.750  0.250  0.500  1.0
  Sn  Sn3  1  0.000  0.000  0.000  1.0
  O  O4  1  0.999  0.499  0.500  1.0
  O  O5  1  0.774  0.774  0.000  1.0
  O  O6  1  0.501  0.001  0.500  1.0
  O  O7  1  0.226  0.226  0.000  1.0
[/CIF]
.
The material structure described by Li2CuSnO4 is Caswellsilverite-derived structured and crystallizes in the tetragonal I-4m2 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to two O(1,1) and four equivalent O(2) atoms to form LiO6 octahedra that share corners with two equivalent Cu(1)O6 octahedra, corners with four equivalent Li(1)O6 octahedra, edges with four equivalent Li(2)O6 octahedra, edges with four equivalent Cu(1)O6 octahedra, and edges with four equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-12°. In the second Li site, Li(2) is bonded to two O(2,2) and four equivalent O(1) atoms to form LiO6 octahedra that share corners with two equivalent Sn(1)O6 octahedra, corners with four equivalent Li(2)O6 octahedra, edges with four equivalent Li(1)O6 octahedra, edges with four equivalent Cu(1)O6 octahedra, and edges with four equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. Cu(1) is bonded to two O(1,1) and four equivalent O(2) atoms to form CuO6 octahedra that share corners with two equivalent Li(1)O6 octahedra, corners with four equivalent Cu(1)O6 octahedra, edges with four equivalent Li(1)O6 octahedra, edges with four equivalent Li(2)O6 octahedra, and edges with four equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-12°. Sn(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form SnO6 octahedra that share corners with two equivalent Li(2)O6 octahedra, corners with four equivalent Sn(1)O6 octahedra, edges with four equivalent Li(1)O6 octahedra, edges with four equivalent Li(2)O6 octahedra, and edges with four equivalent Cu(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), two equivalent Li(2), one Cu(1), and two equivalent Sn(1) atoms to form OLi3CuSn2 octahedra that share corners with six O(1,1)Li3CuSn2 octahedra; edges with four equivalent O(1)Li3CuSn2 octahedra; and edges with eight O(2,2)Li3Cu2Sn octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the second O site, O(2) is bonded to one Li(2), two equivalent Li(1), two equivalent Cu(1), and one Sn(1) atom to form distorted OLi3Cu2Sn octahedra that share corners with six O(2,2)Li3Cu2Sn octahedra; edges with four equivalent O(2)Li3Cu2Sn octahedra; and edges with eight O(1,1,1)Li3CuSn2 octahedra. The corner-sharing octahedral tilt angles range from 0-12°. In the third O site, O(1) is bonded to one Li(1), two equivalent Li(2), one Cu(1), and two equivalent Sn(1) atoms to form OLi3CuSn2 octahedra that share corners with six O(1,1)Li3CuSn2 octahedra; edges with four equivalent O(1)Li3CuSn2 octahedra; and edges with eight O(2,2)Li3Cu2Sn octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the fourth O site, O(1) is bonded to one Li(1), two equivalent Li(2), one Cu(1), and two equivalent Sn(1) atoms to form OLi3CuSn2 octahedra that share corners with six O(1,1)Li3CuSn2 octahedra; edges with four equivalent O(1)Li3CuSn2 octahedra; and edges with eight O(2,2)Li3Cu2Sn octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the fifth O site, O(2) is bonded to one Li(2), two equivalent Li(1), two equivalent Cu(1), and one Sn(1) atom to form distorted OLi3Cu2Sn octahedra that share corners with six O(2,2)Li3Cu2Sn octahedra; edges with four equivalent O(2)Li3Cu2Sn octahedra; and edges with eight O(1,1,1)Li3CuSn2 octahedra. The corner-sharing octahedral tilt angles range from 0-12°. is represented by the CIF file [CIF]
data_Li2CuSnO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.461
_cell_length_b   5.461
_cell_length_c   5.461
_cell_angle_alpha   135.055
_cell_angle_beta   135.055
_cell_angle_gamma   65.445
_symmetry_Int_Tables_number   1
_cell_volume   80.076
_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  0.250  0.750  0.500  1.0
  Li  Li1  1  0.500  0.500  0.000  1.0
  Cu  Cu2  1  0.750  0.250  0.500  1.0
  Sn  Sn3  1  0.000  0.000  0.000  1.0
  O  O4  1  0.999  0.499  0.500  1.0
  O  O5  1  0.774  0.774  0.000  1.0
  O  O6  1  0.501  0.001  0.500  1.0
  O  O7  1  0.226  0.226  0.000  1.0
[/CIF]
.