The compound described by Li2BeSiO4 is Stannite-like structured and crystallizes in the monoclinic Pc space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form LiO4 tetrahedra that share corners with four equivalent Li(2)O4 tetrahedra, corners with four equivalent Be(1)O4 tetrahedra, and corners with four equivalent Si(1)O4 tetrahedra. In the second Li site, Li(2) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form LiO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Be(1)O4 tetrahedra, and corners with four equivalent Si(1)O4 tetrahedra. Be(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form BeO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Li(2)O4 tetrahedra, and corners with four equivalent Si(1)O4 tetrahedra. Si(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SiO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Li(2)O4 tetrahedra, and corners with four equivalent Be(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), one Li(2), one Be(1), and one Si(1) atom to form corner-sharing OLi2BeSi tetrahedra. In the second O site, O(2) is bonded to one Li(1), one Li(2), one Be(1), and one Si(1) atom to form corner-sharing OLi2BeSi tetrahedra. In the third O site, O(3) is bonded to one Li(1), one Li(2), one Be(1), and one Si(1) atom to form corner-sharing OLi2BeSi tetrahedra. In the fourth O site, O(4) is bonded to one Li(1), one Li(2), one Be(1), and one Si(1) atom to form distorted corner-sharing OLi2BeSi tetrahedra. is represented by the CIF card [CIF]
data_Li2BeSiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.677
_cell_length_b   4.923
_cell_length_c   6.051
_cell_angle_alpha   90.000
_cell_angle_beta   89.998
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   139.315
_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  0.998  0.175  0.500  1.0
  Li  Li1  1  0.498  0.825  1.000  1.0
  Li  Li2  1  0.499  0.336  0.747  1.0
  Li  Li3  1  0.999  0.664  0.247  1.0
  Be  Be4  1  0.508  0.321  0.248  1.0
  Be  Be5  1  0.008  0.679  0.748  1.0
  Si  Si6  1  0.009  0.179  0.997  1.0
  Si  Si7  1  0.509  0.821  0.497  1.0
  O  O8  1  0.355  0.199  0.027  1.0
  O  O9  1  0.356  0.699  0.718  1.0
  O  O10  1  0.917  0.861  0.967  1.0
  O  O11  1  0.855  0.801  0.527  1.0
  O  O12  1  0.417  0.139  0.467  1.0
  O  O13  1  0.917  0.357  0.781  1.0
  O  O14  1  0.417  0.643  0.281  1.0
  O  O15  1  0.856  0.301  0.218  1.0
[/CIF]
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The compound described by Li2BeSiO4 is Stannite-like structured and crystallizes in the monoclinic Pc space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form LiO4 tetrahedra that share corners with four equivalent Li(2)O4 tetrahedra, corners with four equivalent Be(1)O4 tetrahedra, and corners with four equivalent Si(1)O4 tetrahedra. In the second Li site, Li(2) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form LiO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Be(1)O4 tetrahedra, and corners with four equivalent Si(1)O4 tetrahedra. Be(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form BeO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Li(2)O4 tetrahedra, and corners with four equivalent Si(1)O4 tetrahedra. Si(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SiO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Li(2)O4 tetrahedra, and corners with four equivalent Be(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), one Li(2), one Be(1), and one Si(1) atom to form corner-sharing OLi2BeSi tetrahedra. In the second O site, O(2) is bonded to one Li(1), one Li(2), one Be(1), and one Si(1) atom to form corner-sharing OLi2BeSi tetrahedra. In the third O site, O(3) is bonded to one Li(1), one Li(2), one Be(1), and one Si(1) atom to form corner-sharing OLi2BeSi tetrahedra. In the fourth O site, O(4) is bonded to one Li(1), one Li(2), one Be(1), and one Si(1) atom to form distorted corner-sharing OLi2BeSi tetrahedra. is represented by the CIF card [CIF]
data_Li2BeSiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.677
_cell_length_b   4.923
_cell_length_c   6.051
_cell_angle_alpha   90.000
_cell_angle_beta   89.998
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   139.315
_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  0.998  0.175  0.500  1.0
  Li  Li1  1  0.498  0.825  1.000  1.0
  Li  Li2  1  0.499  0.336  0.747  1.0
  Li  Li3  1  0.999  0.664  0.247  1.0
  Be  Be4  1  0.508  0.321  0.248  1.0
  Be  Be5  1  0.008  0.679  0.748  1.0
  Si  Si6  1  0.009  0.179  0.997  1.0
  Si  Si7  1  0.509  0.821  0.497  1.0
  O  O8  1  0.355  0.199  0.027  1.0
  O  O9  1  0.356  0.699  0.718  1.0
  O  O10  1  0.917  0.861  0.967  1.0
  O  O11  1  0.855  0.801  0.527  1.0
  O  O12  1  0.417  0.139  0.467  1.0
  O  O13  1  0.917  0.357  0.781  1.0
  O  O14  1  0.417  0.643  0.281  1.0
  O  O15  1  0.856  0.301  0.218  1.0
[/CIF]
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