#------------------------------------------------------------------------------ #$Date: 2010-01-30 15:59:17 +0200 (Sat, 30 Jan 2010) $ #$Revision: 966 $ #$URL: file:///home/coder/svn-repositories/cod/cif/1/1001461.cif $ #------------------------------------------------------------------------------ # # This file is available in the Crystallography Open Database (COD), # http://www.crystallography.net/ # # All data on this site have been placed in the public domain by the # contributors. # data_1001461 _chemical_name_systematic 'Rubidium niobium oxide phosphate (1/3/3/3)' _chemical_formula_structural 'Rb Nb3 O3 (P O4)3' _chemical_formula_sum 'Nb3 O15 P3 Rb' _publ_section_title ; A large family of niobium phosphate bronzes and bronzoids with KNb~3~P~3~O~15~ structure ; loop_ _publ_author_name 'Borel, M M' 'Benabbas, A' 'Rebbah, H' 'Grandin, A' 'Leclaire, A' 'Raveau, B' _journal_name_full ; European Journal of Solid State Inorganic Chemistry ; _journal_coden_ASTM EJSCE5 _journal_volume 27 _journal_year 1990 _journal_page_first 525 _journal_page_last 535 _cell_length_a 13.352(1) _cell_length_b 14.760(1) _cell_length_c 6.457(7) _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1272.5 _cell_formula_units_Z 4 _symmetry_space_group_name_H-M 'P n n m' _symmetry_Int_Tables_number 58 _symmetry_cell_setting orthorhombic loop_ _symmetry_equiv_pos_as_xyz 'x,y,z' '-x,-y,z' '1/2+x,1/2-y,1/2-z' '1/2-x,1/2+y,1/2-z' '-x,-y,-z' 'x,y,-z' '1/2-x,1/2+y,1/2+z' '1/2+x,1/2-y,1/2+z' loop_ _atom_type_symbol _atom_type_oxidation_number Nb5+ 4.667 Rb1+ 1.000 P5+ 5.000 O2- -2.000 loop_ _atom_site_label _atom_site_type_symbol _atom_site_symmetry_multiplicity _atom_site_Wyckoff_symbol _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_attached_hydrogens _atom_site_calc_flag Nb1 Nb5+ 4 g 0.4372(1) 0.3877(1) 0. 1. 0 d Nb2 Nb5+ 4 g 0.6906(1) 0.2751(1) 0. 1. 0 d Nb3 Nb5+ 4 g 0.3585(1) -0.0243(1) 0. 1. 0 d Rb1 Rb1+ 8 h 0.0098(3) 0.3270(2) 0.044(1) 0.5 0 d P1 P5+ 4 g 0.2718(4) 0.2044(4) 0. 1. 0 d P2 P5+ 4 g 0.3736(3) 0.3802(4) 0.5 1. 0 d P3 P5+ 4 g 0.2073(4) 0.5049(4) 0. 1. 0 d O1 O2- 2 b 0.5 0.5 0. 1. 0 d O2 O2- 4 g 0.301(1) 0.448(1) 0. 1. 0 d O3 O2- 4 g 0.360(1) 0.267(1) 0. 1. 0 d O4 O2- 4 g 0.564(1) 0.324(1) 0. 1. 0 d O5 O2- 8 h 0.4415(7) 0.3872(6) 0.307(1) 1. 0 d O6 O2- 4 g 0.768(1) 0.3944(9) 0. 1. 0 d O7 O2- 4 g 0.634(1) 0.1511(9) 0. 1. 0 d O8 O2- 4 g 0.829(1) 0.2148(8) 0. 1. 0 d O9 O2- 8 h 0.7039(7) 0.2792(6) 0.313(2) 1. 0 d O10 O2- 4 g 0.296(1) 0.4549(8) 0.5 1. 0 d O11 O2- 4 g 0.311(1) 0.1065(9) 0. 1. 0 d O12 O2- 8 h 0.1409(7) 0.4819(6) 0.190(1) 1. 0 d O13 O2- 2 d 0.5 0. 0. 1. 0 d _refine_ls_R_factor_all 0.038 _cod_database_code 1001461