data_global
_amcsd_formula_title 'Cr2 Na3 O12 P3'
loop_
_publ_author_name
'Lucazeau G'
'Barj M'
'Soubeyroux J'
'Dianoux A'
'Delmas C'
_journal_name_full 'Solid State Ionics'
_journal_volume 1819 
_journal_year 1986
_journal_page_first 959
_journal_page_last 963
_publ_section_title
;
 Neutron scattering and diffraction study of Na3 Cr2 P3 O12, Na Zr2 P3 O12
 and Na3 Zr Mg P3 O12
 _cod_database_code 1008846
;
_database_code_amcsd 0016712
_chemical_formula_sum 'Cr2 P3 O12 Na2.98'
_cell_length_a 8.6476
_cell_length_b 8.6476
_cell_length_c 21.6169
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 1399.959
_exptl_crystal_density_diffrn      3.255
_symmetry_space_group_name_H-M 'R -3 c'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '2/3+x,1/3+y,1/3+z'
  '1/3+x,2/3+y,2/3+z'
  'x,x-y,1/2+z'
  '2/3+x,1/3+x-y,5/6+z'
  '1/3+x,2/3+x-y,1/6+z'
  'y,x,1/2-z'
  '2/3+y,1/3+x,5/6-z'
  '1/3+y,2/3+x,1/6-z'
  '-x+y,y,1/2+z'
  '2/3-x+y,1/3+y,5/6+z'
  '1/3-x+y,2/3+y,1/6+z'
  '-x,-x+y,1/2-z'
  '2/3-x,1/3-x+y,5/6-z'
  '1/3-x,2/3-x+y,1/6-z'
  '-y,-x,1/2+z'
  '2/3-y,1/3-x,5/6+z'
  '1/3-y,2/3-x,1/6+z'
  'x-y,-y,1/2-z'
  '2/3+x-y,1/3-y,5/6-z'
  '1/3+x-y,2/3-y,1/6-z'
  'y,-x+y,-z'
  '2/3+y,1/3-x+y,1/3-z'
  '1/3+y,2/3-x+y,2/3-z'
  '-x+y,-x,z'
  '2/3-x+y,1/3-x,1/3+z'
  '1/3-x+y,2/3-x,2/3+z'
  '-x,-y,-z'
  '2/3-x,1/3-y,1/3-z'
  '1/3-x,2/3-y,2/3-z'
  '-y,x-y,z'
  '2/3-y,1/3+x-y,1/3+z'
  '1/3-y,2/3+x-y,2/3+z'
  'x-y,x,-z'
  '2/3+x-y,1/3+x,1/3-z'
  '1/3+x-y,2/3+x,2/3-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Cr1   0.00000   0.00000   0.14650   1.00000
P1   0.29110   0.00000   0.25000   1.00000
O1   0.17460  -0.03060   0.19340   1.00000
O2   0.19250   0.16750   0.08990   1.00000
Na1   0.00000   0.00000   0.00000   0.79000
Na2   0.63150   0.00000   0.25000   0.73000