#------------------------------------------------------------------------------ #$Date: 2008-01-14 00:15:36 +0200 (Mon, 14 Jan 2008) $ #$Revision: 14 $ #$URL: file:///home/coder/svn-repositories/cod/cif/1/1008736.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_1008736 _chemical_name_systematic 'Iron iron(III) phosphate(V) - $-beta' _chemical_formula_structural 'Fe2 (P O5)' _chemical_formula_sum 'Fe2 O5 P' _publ_section_title ; Occurrence of a monoclinic distortion in $-beta-Fe2 P O5 ; loop_ _publ_author_name 'Elkaim, E' 'Berar, J F' 'Gleitzer, C' 'Malaman, B' 'Ijjaali, M' 'Lecomte, C' _journal_name_full 'Acta Crystallographica B (39,1983-)' _journal_coden_ASTM ASBSDK _journal_volume 52 _journal_year 1996 _journal_page_first 428 _journal_page_last 431 _cell_length_a 7.2956(7) _cell_length_b 7.5605(7) _cell_length_c 7.2512(7) _cell_angle_alpha 90 _cell_angle_beta 117.368(2) _cell_angle_gamma 90 _cell_volume 355.2 _cell_formula_units_Z 4 _symmetry_space_group_name_H-M 'I 1 2/a 1' _symmetry_Int_Tables_number 15 _symmetry_cell_setting monoclinic loop_ _symmetry_equiv_pos_as_xyz 'x,y,z' '1/2-x,y,-z' '-x,-y,-z' '1/2+x,-y,z' '1/2+x,1/2+y,1/2+z' '-x,1/2+y,1/2-z' '1/2-x,1/2-y,1/2-z' 'x,1/2-y,1/2+z' loop_ _atom_type_symbol _atom_type_oxidation_number Fe2+ 2.500 O2- -2.000 P5+ 5.000 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 Fe1 Fe2+ 4 b 0. 0.5 0. 1. 0 d Fe2 Fe2+ 4 c 0.75 0.25 0.25 1. 0 d O1 O2- 8 f 0.561(1) 0.756(1) -0.060(1) 1. 0 d O2 O2- 8 f 0.293(1) 0.490(1) 0.687(1) 1. 0 d O3 O2- 4 e 0.75 0.3675(15) 0. 1. 0 d P1 P5+ 4 e 0.25 0.1244(6) 0. 1. 0 d _refine_ls_R_factor_all 0.052