data_global
_amcsd_formula_title '2(H3AsO4).H2O'
loop_
_publ_author_name
'Worzala H'
_journal_name_full 'Acta Crystallographica, Section B'
_journal_volume 24 
_journal_year 1968
_journal_page_first 987
_journal_page_last 991
_publ_section_title
;
 Die kristallstruktur des arsensaurehydrates 2H3AsO4.H2O
;
_database_code_amcsd 0009343
_chemical_formula_sum 'As2 (O9 H8)'
_cell_length_a 7.60
_cell_length_b 13.29
_cell_length_c 8.24
_cell_angle_alpha 90
_cell_angle_beta 109.6
_cell_angle_gamma 90
_cell_volume 784.049
_exptl_crystal_density_diffrn      2.558
_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
_atom_site_U_iso_or_equiv
As1   0.74740   0.10350   0.44090   0.02343
As2   0.14250   0.13510   0.08480   0.02343
O-H1   0.31400   0.01900   0.55660   0.03394
O-H2   0.55090   0.16210   0.43160   0.03394
O3   0.93060   0.13400   0.59590   0.03394
O-H4   0.76820   0.12190   0.25000   0.03394
O5   0.10580   0.09850   0.25840   0.03394
O-H6   0.93720   0.12410   0.91630   0.03394
O-H7   0.30890   0.06710   0.05080   0.03394
O-H8   0.21860   0.24310   0.59040   0.03394
Wat9   0.51570   0.13210   0.86870   0.03394