#------------------------------------------------------------------------------ #$Date: 2015-10-15 01:08:34 +0300 (Thu, 15 Oct 2015) $ #$Revision: 169101 $ #$URL: file:///home/coder/svn-repositories/cod/cif/2/31/10/2311029.cif $ #------------------------------------------------------------------------------ # # This file is available in the Crystallography Open Database (COD), # http://www.crystallography.net/. The original data for this entry # were provided by IUCr Journals, http://journals.iucr.org/. # # The file may be used within the scientific community so long as # proper attribution is given to the journal article from which the # data were obtained. # data_2311029 loop_ _publ_author_name 'Zachariasen, W.H.' _publ_section_title ; Crystal chemical studies of the 5f-series of elements. XXI. The crystal structure of magnesium orthouranate ; _journal_name_full 'Acta Crystallographica (1,1948-23,1967)' _journal_page_first 788 _journal_page_last 791 _journal_volume 7 _journal_year 1954 _chemical_formula_sum 'Mg O4 U' _chemical_name_systematic 'Mg (U O4)' _space_group_IT_number 74 _symmetry_space_group_name_Hall '-I 2b 2 (-x,z,y)' _symmetry_space_group_name_H-M 'I m m a (-a,c,b)' _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_formula_units_Z 4 _cell_length_a 6.52 _cell_length_b 6.595 _cell_length_c 6.924 _cell_volume 297.728 _citation_journal_id_ASTM ACCRA9 _cod_data_source_file Zachariasen_ACCRA9_1954_219.cif _cod_data_source_block Mg1O4U1 _cod_cif_authors_sg_H-M 'I m a m' _cod_original_cell_volume 297.7278 _cod_chemical_formula_sum_orig 'Mg1 O4 U1' _cod_database_code 2311029 loop_ _symmetry_equiv_pos_as_xyz x,y,z -x,y,-z+1/2 x,-y,-z -x,-y,z+1/2 -x,-y,-z x,-y,z-1/2 -x,y,z x,y,-z-1/2 x+1/2,y+1/2,z+1/2 -x+1/2,y+1/2,-z+1 x+1/2,-y+1/2,-z+1/2 -x+1/2,-y+1/2,z+1 -x+1/2,-y+1/2,-z+1/2 x+1/2,-y+1/2,z -x+1/2,y+1/2,z+1/2 x+1/2,y+1/2,-z 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 U1 U+6 0 0.0222 0.25 1 0.0 O1 O-2 0.295 0.022 0.25 1 0.0 O2 O-2 0 0.2 -0.012 1 0.0 Mg1 Mg+2 0 0.5 0 1 0.0