data_global
_amcsd_formula_title 'Li2Si2O5'
loop_
_publ_author_name
'Smith R I'
'Howie R A'
'West A R'
'Aragon-Pina A'
'Villafuerte-Castrejon M E'
_journal_name_full 'Acta Crystallographica, Section C'
_journal_volume 46 
_journal_year 1990
_journal_page_first 363
_journal_page_last 365
_publ_section_title
;
 The structure of metastable lithium disilicate, Li2Si2O5
;
_database_code_amcsd 0010107
_chemical_formula_sum 'Li2 Si2 O5'
_cell_length_a 5.683
_cell_length_b 4.784
_cell_length_c 14.648
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 398.242
_exptl_crystal_density_diffrn      2.503
_symmetry_space_group_name_H-M 'P b c n'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,-y,1/2+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,z'
  '1/2+x,1/2-y,-z'
  '1/2+x,1/2+y,1/2-z'
  '1/2-x,1/2-y,1/2+z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Li   0.60430   0.30580   0.44920   0.02014
Si   0.09440   0.30620   0.35150   0.01317
O1   0.00000   0.24380   0.25000   0.02102
O2  -0.07510   0.21270   0.43140   0.01659
O3   0.34660   0.14340   0.36080   0.01659
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
Si 0.02274 0.00557 0.01087 -0.00055 -0.00506 -0.00142
O1 0.04418 0.00858 0.01087 0.00000 -0.01181 0.00000
O2 0.02651 0.01159 0.01196 -0.00041 0.00759 0.00568
O3 0.02945 0.00383 0.01630 0.00289 -0.01054 0.00355