data_global _amcsd_formula_title 'Br4 Cu H12 N2 O2' loop_ _publ_author_name 'Silberstein A' _journal_name_full 'Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences' _journal_volume 202 _journal_year 1936 _journal_page_first 1196 _journal_page_last 1197 _publ_section_title ; Srtucture du bromure double de cuivre et d'ammonium. _cod_database_code 1010321 ; _database_code_amcsd 0017247 _chemical_formula_sum 'Cu N2 Br4 O2' _cell_length_a 7.98 _cell_length_b 7.98 _cell_length_c 8.41 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 535.552 _exptl_crystal_density_diffrn 2.748 _symmetry_space_group_name_H-M 'P 42/m n m' loop_ _space_group_symop_operation_xyz 'x,y,z' '-y,-x,z' 'y,x,-z' '1/2+y,1/2-x,1/2-z' '1/2-y,1/2+x,1/2+z' '1/2+x,1/2-y,1/2+z' '1/2-x,1/2+y,1/2-z' 'x,y,-z' '-x,-y,z' 'y,x,z' '-y,-x,-z' '1/2-y,1/2+x,1/2-z' '1/2+y,1/2-x,1/2+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 Cu1 0.00000 0.00000 0.00000 N1 0.00000 0.50000 0.25000 Br1 0.21800 0.21800 0.00000 Br2 0.22200 -0.22200 0.00000 O1 0.00000 0.00000 0.25000