data_global _chemical_name_mineral 'Lueshite' loop_ _publ_author_name 'Mishchuk D O' 'V'yunov O I' 'Ovchar O V' 'Belous A G' _journal_name_full 'Inorganic Materials' _journal_volume 40 _journal_year 2004 _journal_page_first 1324 _journal_page_last 1330 _publ_section_title ; Structural and dielectric properties of solid solutions of sodium niobate in lanthanum and neodymium niobates Note: Nb2/3-x Na3x Nb2O6 synthesized at 1330 deg C Note: x = .58, Nd.09Na1.74Nb2O6 ; _database_code_amcsd 0018682 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Nd.09 Na1.74 Nb2 O6' _cell_length_a 5.5100 _cell_length_b 5.5563 _cell_length_c 15.5670 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 476.587 _exptl_crystal_density_diffrn 4.666 _symmetry_space_group_name_H-M 'P b c m' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,1/2-y,1/2+z' '-x,1/2+y,1/2-z' '-x,1/2+y,z' 'x,1/2-y,-z' 'x,y,1/2-z' '-x,-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_occupancy Nd1 0.25100 0.25000 0.00000 0.09000 Na1 0.25100 0.25000 0.00000 0.74000 Na2 0.22600 0.22200 0.25000 1.00000 Nb 0.25100 0.73810 0.12480 1.00000 O1 0.67300 0.25000 0.00000 1.00000 O2 0.22100 0.76700 0.25000 1.00000 O3 0.46600 0.44600 0.15300 1.00000 O4 0.02900 0.02000 0.11700 1.00000