#------------------------------------------------------------------------------ #$Date: 2016-02-13 21:28:24 +0200 (Sat, 13 Feb 2016) $ #$Revision: 176429 $ #$URL: file:///home/coder/svn-repositories/cod/cif/1/54/20/1542015.cif $ #------------------------------------------------------------------------------ # # This file is available in the Crystallography Open Database (COD), # http://www.crystallography.net/ # # All data on this site have been placed in the public domain by the # contributors. # data_1542015 loop_ _publ_author_name 'Onodera, A.' 'Shiozaki, Y.' _publ_section_title ; The crystal structure of (N H4)2 Be F4 at room temperature ; _journal_name_full Ferroelectrics _journal_page_first 23 _journal_page_last 24 _journal_volume 19 _journal_year 1978 _chemical_formula_sum 'Be F4 H8 N2' _chemical_name_systematic '(N H4)2 (Be F4)' _space_group_IT_number 62 _symmetry_space_group_name_Hall '-P 2c 2n' _symmetry_space_group_name_H-M 'P n a m' _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_formula_units_Z 4 _cell_length_a 7.646 _cell_length_b 10.43 _cell_length_c 5.918 _cell_volume 471.947 _citation_journal_id_ASTM FEROA8 _cod_data_source_file Onodera_FEROA8_1978_1367.cif _cod_data_source_block H8Be1F4N2 _cod_original_cell_volume 471.9474 _cod_original_sg_symbol_Hall '-P 2ac 2n (-x,z,y)' _cod_original_formula_sum 'H8 Be1 F4 N2' _cod_database_code 1542015 loop_ _symmetry_equiv_pos_as_xyz x,y,z -x+1/2,y+1/2,-z x+1/2,-y+1/2,-z+1/2 -x,-y,z+1/2 -x,-y,-z x-1/2,-y-1/2,z -x-1/2,y-1/2,z-1/2 x,y,-z-1/2 loop_ _atom_site_label _atom_site_type_symbol _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_U_iso_or_equiv H6 H+1 0.41 0.824 0.13 1 0.0 H4 H+1 0.494 0.736 0.25 1 0.0 F1 F-1 0.0497 0.3932 0.25 1 0.0 Be1 Be+2 0.2475 0.4179 0.25 1 0.0 H5 H+1 0.541 0.853 0.25 1 0.0 H2 H+1 0.109 0.155 0.25 1 0.0 N1 N-3 0.1799 0.0969 0.25 1 0.0 F3 F-1 0.3278 0.3589 0.0361 1 0.0 H3 H+1 0.16 0.037 0.141 1 0.0 F2 F-1 0.2864 0.5624 0.25 1 0.0 H1 H+1 0.381 0.129 0.25 1 0.0 N2 N-3 0.4692 0.8051 0.25 1 0.0