data_global
_amcsd_formula_title 'Na2 O8 P2 V'
loop_
_publ_author_name
'Benhamada L'
'Grandin A'
'Borel M'
'Leclaire A'
'Raveau B'
_journal_name_full 'Journal of Solid State Chemistry'
_journal_volume 101 
_journal_year 1992
_journal_page_first 154
_journal_page_last 160
_publ_section_title
;
 Na2VP2O8: A Tetravalent Vanadium Diphosphate with a Layered Structure
 _cod_database_code 1001539
;
_database_code_amcsd 0013754
_chemical_formula_sum 'V P2 Na2 O8'
_cell_length_a 7.7178
_cell_length_b 13.3233
_cell_length_c 6.287
_cell_angle_alpha 90
_cell_angle_beta 99.49
_cell_angle_gamma 90
_cell_volume 637.623
_exptl_crystal_density_diffrn      2.988
_symmetry_space_group_name_H-M 'P 1 21/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,1/2+z'
  '-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
V1   0.22827   0.42441   0.27003
P1   0.35999   0.62441   0.54265
P2   0.17255   0.48123   0.75090
Na1   0.07350   0.70519   0.16150
Na2   0.51900   0.36430   0.92880
O1   0.36350   0.56160   0.35620
O2   0.46590   0.35910   0.30330
O3   0.11180   0.32650   0.19130
O4   0.22990   0.40891   0.58990
O5   0.02270   0.52270   0.24510
O6   0.28030   0.46430  -0.02630
O7   0.21840   0.59215   0.68560
O8   0.28640   0.73565   0.47420