data_global
_amcsd_formula_title 'Na2Ca(HPO4)2'
loop_
_publ_author_name
'Ben Chaabane T'
'Smiri-Dogguy L'
'Laligant Y'
'Le Bail A'
_journal_name_full 'European Journal of Solid State and Inorganic Chemistry'
_journal_volume 34 
_journal_year 1997
_journal_page_first 937
_journal_page_last 946
_publ_section_title
;
 Structure of Na2Ca(HPO4)2 determined ab initio from conventional
 powder diffraction data
 _cod_database_code 1000140
;
_database_code_amcsd 0012610
_chemical_formula_sum 'Ca P2 Na2 O8'
_cell_length_a 9.0652
_cell_length_b 7.1468
_cell_length_c 5.4700
_cell_angle_alpha 90
_cell_angle_beta 98.782
_cell_angle_gamma 90
_cell_volume 350.231
_exptl_crystal_density_diffrn      2.617
_symmetry_space_group_name_H-M 'P 1 21 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,1/2+y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Ca   0.23310   0.00000   0.19700
P1   0.42550   0.21190   0.75760
P2   0.03610   0.85370   0.69010
Na1   0.24270   0.49200   0.05490
Na2   0.38430   0.73460   0.67960
O1   0.06750   0.85280   0.42330
O2   0.40200   0.19800   0.02880
O3   0.33510   0.39380   0.65350
O4   0.36810   0.05260   0.60420
O5   0.59160   0.25350   0.75430
O6   0.15640   0.74480   0.86380
O7   0.87630   0.79320   0.69900
O8   0.95260   0.56000   0.18980