#------------------------------------------------------------------------------ #$Date: 2018-07-07 02:59:37 +0100 (Sat, 07 Jul 2018) $ #$Revision: 208902 $ #$URL: svn://www.crystallography.net/cod/cif/1/00/16/1001632.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_1001632 loop_ _publ_author_name 'Martin, C' 'Hervieu, M' 'Huve, M' 'Michel, C' 'Maignan, A' 'Van Tendeloo, G' 'Raveau, B' _publ_section_title ; Lead-mercury-based superconductors. The 1212 cuprate Pb0.7 Hg0.3 Sr2+x Ca0.7 Nd0.3-x Cu2 O7-d and the new oxycarbonate Pb0.7 Hg0.3 Sr4 Cu2 (C O3) O7 ; _journal_coden_ASTM PHYCE6 _journal_name_full 'Physica C (Amsterdam) (152,1988-)' _journal_page_first 19 _journal_page_last 26 _journal_paper_doi 10.1016/0921-4534(94)90109-0 _journal_volume 222 _journal_year 1994 _chemical_formula_structural '(Pb0.7 Hg0.3) Sr4 Cu2 (C O3) O7' _chemical_formula_sum 'C Cu2 Hg0.3 O10 Pb0.7 Sr4' _chemical_name_systematic ; Lead mercury strontium copper carbonate oxide (0.7/0.3/4/2/1/7) ; _space_group_IT_number 123 _symmetry_cell_setting tetragonal _symmetry_Int_Tables_number 123 _symmetry_space_group_name_Hall '-P 4 2' _symmetry_space_group_name_H-M 'P 4/m m m' _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_formula_units_Z 1 _cell_length_a 3.8242(1) _cell_length_b 3.8242(1) _cell_length_c 16.46809(40) _cell_volume 240.8 _refine_ls_R_factor_all 0.074 _cod_depositor_comments ; Correcting the summary chemical formula by changing it from 'Cu2 Hg0.3 O10 Pb0.7 Sr4' to 'C Cu2 Hg0.3 O10 Pb0.7 Sr4'. Antanas Vaitkus, 2018-07-07 ; _cod_original_formula_sum 'Cu2 Hg.3 O10 Pb.7 Sr4' _cod_database_code 1001632 loop_ _symmetry_equiv_pos_as_xyz x,y,z -x,-y,z -x,y,z x,-y,z -y,x,z y,-x,z y,x,z -y,-x,z -x,-y,-z x,y,-z x,-y,-z -x,y,-z y,-x,-z -y,x,-z -y,-x,-z y,x,-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 Pb1 Pb2+ 4 l 0.069(3) 0. 0. 0.175 0 d Hg1 Hg2+ 4 l 0.069(3) 0. 0. 0.075 0 d Sr1 Sr2+ 2 h 0.5 0.5 0.1583(2) 1. 0 d Sr2 Sr2+ 2 h 0.5 0.5 0.3733(2) 1. 0 d Cu1 Cu3+ 2 g 0. 0. 0.2631(3) 1. 0 d C1 C4+ 1 b 0. 0. 0.5 1. 0 d O1 O2- 1 c 0.5 0.5 0. 1. 0 d O2 O2- 2 g 0. 0. 0.123(1) 1. 0 d O3 O2- 4 i 0.5 0. 0.270(1) 1. 0 d O4 O2- 8 s 0.153(8) 0. 0.428(1) 0.25 0 d O5 O2- 4 m 0.332(13) 0. 0.5 0.25 0 d loop_ _atom_type_symbol _atom_type_oxidation_number Pb2+ 2.000 Hg2+ 2.000 Sr2+ 2.000 Cu3+ 3.000 C4+ 4.000 O2- -2.000