#------------------------------------------------------------------------------ #$Date: 2010-01-30 13:59:17 +0000 (Sat, 30 Jan 2010) $ #$Revision: 966 $ #$URL: svn://www.crystallography.net/cod/cif/1/1008428.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_1008428 _chemical_name_systematic 'Potassium cyclo-hexaphosphate' _chemical_formula_structural 'K6 (P6 O18)' _chemical_formula_sum 'K6 O18 P6' _publ_section_title ; Crystal chemistry of cyclo-hexaphosphates. I. Structure of anhydrous potassium cyclo-hexaphosphate ; loop_ _publ_author_name 'Averbuch-Pouchot, M T' _journal_name_full 'Acta Crystallographica C (39,1983-)' _journal_coden_ASTM ACSCEE _journal_volume 45 _journal_year 1989 _journal_page_first 1273 _journal_page_last 1275 _cell_length_a 15.753(6) _cell_length_b 15.753(6) _cell_length_c 15.753(6) _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 3909.2 _cell_formula_units_Z 8 _symmetry_space_group_name_H-M 'P a -3' _symmetry_Int_Tables_number 205 _symmetry_cell_setting cubic loop_ _symmetry_equiv_pos_as_xyz 'x,y,z' '1/2+x,1/2-y,-z' '-x,1/2+y,1/2-z' '1/2-x,-y,1/2+z' 'y,z,x' '1/2-y,-z,1/2+x' '1/2+y,1/2-z,-x' '-y,1/2+z,1/2-x' 'z,x,y' '-z,1/2+x,1/2-y' '1/2-z,-x,1/2+y' '1/2+z,1/2-x,-y' '-x,-y,-z' '1/2-x,1/2+y,z' 'x,1/2-y,1/2+z' '1/2+x,y,1/2-z' '-y,-z,-x' '1/2+y,z,1/2-x' '1/2-y,1/2+z,x' 'y,1/2-z,1/2+x' '-z,-x,-y' 'z,1/2-x,1/2+y' '1/2+z,x,1/2-y' '1/2-z,1/2+x,y' loop_ _atom_type_symbol _atom_type_oxidation_number K1+ 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 K1 K1+ 4 b 0. 0. 0.5 1. 0 d K2 K1+ 4 a 0.5 0. 0.5 1. 0 d K3 K1+ 8 c 0.73249(3) 0.73249(3) 0.73249(3) 1. 0 d K4 K1+ 24 d 0.75612(3) 0.62017(3) 0.94141(3) 1. 0 d K5 K1+ 8 c 0.12827(3) 0.12827(3) 0.12827(3) 1. 0 d P1 P5+ 24 d 0.57798(3) 0.55892(3) 0.77471(3) 1. 0 d P2 P5+ 24 d 0.65484(3) 0.82806(3) 0.95358(3) 1. 0 d O1 O2- 24 d 0.59398(9) 0.5116(1) 0.6851(1) 1. 0 d O2 O2- 24 d 0.5236(1) 0.63882(9) 0.7443(1) 1. 0 d O3 O2- 24 d 0.5241(1) 0.5033(1) 0.8271(1) 1. 0 d O4 O2- 24 d 0.6587(1) 0.5923(1) 0.8088(1) 1. 0 d O5 O2- 24 d 0.5748(1) 0.8556(1) 0.9129(1) 1. 0 d O6 O2- 24 d 0.7251(1) 0.7959(1) 0.9003(1) 1. 0 d _refine_ls_R_factor_all 0.023 _cod_database_code 1008428