data_global _amcsd_formula_title 'Na3.04 Nb7 O29 P4' loop_ _publ_author_name 'Benabbas A' 'Leligny H' 'Borel M' 'Grandin A' 'Leclaire A' 'Raveau B' _journal_name_full 'Journal of Solid State Chemistry' _journal_volume 101 _journal_year 1992 _journal_page_first 137 _journal_page_last 144 _publ_section_title ; Na4-xNb7P4O29: A Phosphate Niobium Bronze Intergrowth of the Members M=3 snd M=4 of the MPTB's Series Nax(NbO3)2m(PO2)4 _cod_database_code 1001538 ; _database_code_amcsd 0013753 _chemical_formula_sum 'Nb7 P4 Na3.04 O29' _cell_length_a 32.850 _cell_length_b 5.3484 _cell_length_c 13.252 _cell_angle_alpha 90 _cell_angle_beta 97.79 _cell_angle_gamma 90 _cell_volume 2306.822 _exptl_crystal_density_diffrn 3.767 _symmetry_space_group_name_H-M 'C 1 2/c 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,z' 'x,-y,1/2+z' '1/2+x,1/2-y,1/2+z' '-x,y,1/2-z' '1/2-x,1/2+y,1/2-z' '-x,-y,-z' '1/2-x,1/2-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy Nb1 0.00000 0.00000 0.00000 1.00000 Nb2 0.31830 0.50110 0.02287 1.00000 Nb3 0.22724 0.47850 0.32190 1.00000 Nb4 0.04595 0.49730 0.17911 1.00000 P1 0.14822 0.48700 0.12050 1.00000 P2 0.42169 0.50300 0.15250 1.00000 Na1 0.13180 0.50700 0.36340 1.00000 Na2 -0.09760 0.00900 -0.09950 0.52000 O1 -0.04680 -0.02500 0.07800 1.00000 O2 0.02700 -0.28600 0.07310 1.00000 O3 0.02990 0.20700 0.10760 1.00000 O4 0.37910 0.45900 0.09560 1.00000 O5 0.30660 0.73000 0.12350 1.00000 O6 0.30240 0.22700 0.08470 1.00000 O7 0.27100 0.56400 -0.06950 1.00000 O8 0.34010 0.27800 -0.08830 1.00000 O9 0.34820 0.82100 -0.03780 1.00000 O10 0.17370 0.56200 0.22160 1.00000 O11 0.24780 0.29100 0.22640 1.00000 O12 0.00000 0.51500 0.25000 1.00000 O13 0.10290 0.48000 0.13750 1.00000 O14 0.07220 0.79800 0.26450 1.00000 O15 0.07550 0.26400 0.30370 1.00000