data_global _amcsd_formula_title 'F7 Fe Na2 Ni' loop_ _publ_author_name 'Laligant Y' 'Calage Y' 'Heger G' 'Pannetier J' 'Ferey G' _journal_name_full 'Journal of Solid State Chemistry' _journal_volume 78 _journal_year 1989 _journal_page_first 66 _journal_page_last 77 _publ_section_title ; Ordered Magnetic Frustration VII. Na2 Ni Fe F7: Reexamination of Its Crystal Structure in the True Space Group after Corrections from Renninger Effect and Refinement of Its Frustrated Magnetic Structure at 4.2 and 55 K _cod_database_code 1000257 ; _database_code_amcsd 0013630 _chemical_formula_sum 'Na2 Ni Fe F7' _cell_length_a 7.2338 _cell_length_b 10.3050 _cell_length_c 7.4529 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 555.571 _exptl_crystal_density_diffrn 3.509 _symmetry_space_group_name_H-M 'I m m a' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,1/2+z' 'x,1/2-y,z' '1/2+x,-y,1/2+z' '-x,1/2+y,-z' '1/2-x,+y,1/2-z' '-x,y,z' '1/2-x,1/2+y,1/2+z' 'x,-y,-z' '1/2+x,1/2-y,1/2-z' 'x,1/2+y,-z' '1/2+x,+y,1/2-z' '-x,1/2-y,z' '1/2-x,-y,1/2+z' '-x,-y,-z' '1/2-x,1/2-y,1/2-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Na1 0.00000 0.00000 0.00000 Na2 0.25000 0.25000 0.75000 Ni1 0.25000 0.25000 0.25000 Fe1 0.00000 0.00000 0.50000 F1 0.00000 0.25000 0.14730 F2 0.00000 0.41090 0.72990 F3 0.19600 0.38400 0.43480 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Na1 0.02360 0.05680 0.01900 0.00000 0.00000 0.01890 Na2 0.02230 0.02300 0.06670 0.00000 -0.00360 0.00000 Ni1 0.00680 0.00660 0.00820 0.00000 0.00110 0.00000 Fe1 0.00900 0.00840 0.00830 0.00000 0.00000 0.00250 F1 0.00740 0.02860 0.01770 0.00000 0.00000 0.00000 F2 0.02290 0.02070 0.01090 0.00000 0.00000 0.00160 F3 0.01620 0.01880 0.02900 0.00510 0.00110 -0.01080