data_9009797
_chemical_name 'Claudetite'
loop_
_publ_author_name
'Becker K A'
'Plieth K'
'Stranski I N'
_journal_name_full "Zeitschrift fur Anorganische und Allgemeine Chemie"
_journal_volume 266
_journal_year 1951
_journal_page_first 293
_journal_page_last 301
_publ_section_title
;
 Strukturuntersuchung der monoklinen arsenikmodifikation claudetit
;
_chemical_formula_sum 'As2 O3'
_cell_length_a 5.25
_cell_length_b 12.90
_cell_length_c 4.53
_cell_angle_alpha 90
_cell_angle_beta 86.12
_cell_angle_gamma 90
_cell_volume 306.091
_symmetry_space_group_name_H-M 'P 1 21/n 1'
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '1/2+x,1/2-y,1/2+z'
  '1/2-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_Uiso_or_equiv
As1   0.33500   0.35100   0.00000   0.02280
As2   0.25000   0.10100   0.00000   0.02280
O1   0.43200   0.21900   0.91500   0.02280
O2   0.45200   0.34400   0.37600   0.02280
O3   0.63100   0.40800   0.87600   0.02280