data_global
_amcsd_formula_title '(NH4)2HCr3AsO13'
loop_
_publ_author_name
'Averbuch-Pouchot M'
_journal_name_full 'Acta Crystallographica, Section B'
_journal_volume 34 
_journal_year 1978
_journal_page_first 3350
_journal_page_last 3351
_publ_section_title
;
 Structure du tris(chromato)arsenate de diammonium-hydrogene, (NH4)2HCr3AsO13:
 mise en evidence d'un nouvel anion  (Cr3AsO13)^3-^
 _cod_database_code 1008032
;
_database_code_amcsd 0015979
_chemical_formula_sum 'N2 As Cr3 O13'
_cell_length_a 14.02
_cell_length_b 9.49
_cell_length_c 9.57
_cell_angle_alpha 90
_cell_angle_beta 93.12
_cell_angle_gamma 90
_cell_volume 1271.399
_exptl_crystal_density_diffrn      2.439
_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
N1   0.36010   0.16800   0.48670
N2   0.03860   0.30660   0.30960
As1   0.31450   0.78414   0.04409
Cr1   0.14424   0.57111   0.04849
Cr2   0.48282   0.56350   0.71163
Cr3   0.19377   0.06337   0.10580
O1   0.31120   0.66550   0.37340
O2   0.27420   0.61730   0.04590
O3   0.42790   0.78580   0.11230
O4   0.24520   0.88600   0.13970
O5   0.13600   0.41100  -0.00590
O6   0.08270   0.81960   0.45380
O7   0.10990   0.57870   0.20460
O8   0.40260   0.42200   0.29630
O9   0.45380   0.92570   0.37100
O10   0.44510   0.08080   0.14280
O11   0.08000   0.05680   0.11560
O12   0.22060   0.39170   0.45010
O13   0.24060   0.17350   0.21630