#------------------------------------------------------------------------------ #$Date: 2015-01-27 21:58:39 +0200 (Tue, 27 Jan 2015) $ #$Revision: 130149 $ #$URL: file:///home/coder/svn-repositories/cod/cif/1/00/70/1007080.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_1007080 loop_ _publ_author_name 'Masse, R' 'Grenier, J C' 'Durif, A' _publ_section_title ; Trimetaphosphates mixtes N H~4~ M(II) P~3~ O~9~ isomorphes de la benitoite ; _journal_coden_ASTM BSCFAS _journal_name_full ; Bulletin de la Societe Chimique de France (Vol=Year) ; _journal_page_first 1741 _journal_page_last 1742 _journal_volume 1968 _journal_year 1968 _chemical_formula_structural 'K Mg P3 O9' _chemical_formula_sum 'K Mg O9 P3' _chemical_name_systematic 'Potassium magnesium catena-phosphate' _space_group_IT_number 188 _symmetry_cell_setting hexagonal _symmetry_Int_Tables_number 188 _symmetry_space_group_name_Hall 'P -6c 2' _symmetry_space_group_name_H-M 'P -6 c 2' _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_formula_units_Z 2 _cell_length_a 6.605 _cell_length_b 6.605 _cell_length_c 9.772 _cell_volume 369.2 _refine_ls_R_factor_all 0.09 _cod_database_code 1007080 loop_ _symmetry_equiv_pos_as_xyz x,y,z -y,x-y,z y-x,-x,z x,y,1/2-z -y,x-y,1/2-z y-x,-x,1/2-z -y,-x,1/2+z y-x,y,1/2+z x,x-y,1/2+z -y,-x,-z y-x,y,-z x,x-y,-z 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+ 2 e 0.6667 0.3333 0. 1. 0 d Mg1 Mg2+ 2 c 0.3333 0.6667 0. 1. 0 d P1 P5+ 6 k 0.223 -0.057 0.25 1. 0 d O1 O2- 6 k 0.258 0.192 0.25 1. 0 d O2 O2- 12 l 0.323 -0.08 0.125 1. 0 d loop_ _atom_type_symbol _atom_type_oxidation_number K1+ 1.000 Mg2+ 2.000 P5+ 5.000 O2- -2.000