data_global _amcsd_formula_title 'Na6 Nb8 O35 P5' loop_ _publ_author_name 'Benabbas A' 'Borel M' 'Grandin A' 'Leclaire A' 'Raveau B' _journal_name_full 'Journal of Solid State Chemistry' _journal_volume 92 _journal_year 1991 _journal_page_first 51 _journal_page_last 56 _publ_section_title ; A niobium phosphate "bronze" closely related to the Ba4/3Nb6Si4/4O26 structure: Na6Nb8P5O35 _cod_database_code 1001481 ; _database_code_amcsd 0013712 _chemical_formula_sum 'Nb8 P5 Na6 O35' _cell_length_a 8.9185 _cell_length_b 8.9185 _cell_length_c 30.055 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 2070.289 _exptl_crystal_density_diffrn 3.840 _symmetry_space_group_name_H-M 'R 3 2' loop_ _space_group_symop_operation_xyz 'x,y,z' '2/3+x,1/3+y,1/3+z' '1/3+x,2/3+y,2/3+z' '-x,-x+y,-z' '2/3-x,1/3-x+y,1/3-z' '1/3-x,2/3-x+y,2/3-z' 'y,x,-z' '2/3+y,1/3+x,1/3-z' '1/3+y,2/3+x,2/3-z' 'x-y,-y,-z' '2/3+x-y,1/3-y,1/3-z' '1/3+x-y,2/3-y,2/3-z' '-y,x-y,z' '2/3-y,1/3+x-y,1/3+z' '1/3-y,2/3+x-y,2/3+z' '-x+y,-x,z' '2/3-x+y,1/3-x,1/3+z' '1/3-x+y,2/3-x,2/3+z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Nb1 0.23410 -0.00900 0.06328 Nb2 0.00000 0.00000 0.23608 P1 0.33333 0.66667 0.07110 P2 0.44130 0.00000 0.50000 Na1 0.78620 0.00000 0.50000 Na2 0.58300 0.00000 0.00000 O1 0.22900 0.00000 0.00000 O2 0.25260 -0.03640 0.13140 O3 0.49330 0.14000 0.06580 O4 0.26100 0.77820 0.05140 O5 0.18700 0.17100 0.06960 O6 0.19960 0.14220 0.18970 O7 0.33333 0.66667 0.12120