data_global
_amcsd_formula_title 'Nd2Si2O7'
loop_
_publ_author_name
'Smolin Y I'
'Shepelev Y F'
_journal_name_full 'Acta Crystallographica, Section B'
_journal_volume 26 
_journal_year 1970
_journal_page_first 484
_journal_page_last 492
_publ_section_title
;
 The crystal structures of the rare earth pyrosilicates
;
_database_code_amcsd 0009373
_chemical_formula_sum 'Nd2 Si2 O7'
_cell_length_a 5.394
_cell_length_b 12.95
_cell_length_c 8.72
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 609.112
_exptl_crystal_density_diffrn      4.980
_symmetry_space_group_name_H-M 'P 21 21 21'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,1/2+y,1/2-z'
  '1/2+x,1/2-y,-z'
  '1/2-x,-y,1/2+z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Nd1   0.24736   0.48136   0.69325   0.00570
Nd2   0.75719   0.65960   0.89617   0.00570
Si1   0.72700   0.57180   0.49940   0.00659
Si2   0.72670   0.72480   0.24820   0.00659
O1   0.72100   0.68400   0.42580   0.00760
O2   0.50000   0.50930   0.41960   0.00836
O3   0.97320   0.49870   0.48250   0.01140
O4   0.64470   0.58010   0.67910   0.01697
O5   0.50340   0.67050   0.14300   0.00684
O6   0.98020   0.69850   0.15740   0.01127
O7   0.64700   0.84410   0.24600   0.01216