#------------------------------------------------------------------------------ #$Date: 2011-03-31 12:48:06 +0100 (Thu, 31 Mar 2011) $ #$Revision: 17004 $ #$URL: svn://www.crystallography.net/cod/cif/8/8100985.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_8100985 loop_ _publ_author_name 'Champarnaud-Mesjard, Jean-Claude' 'Thomas, Philippe' 'Colas-Dutreilh, Maggy' 'Oufkir, Abdelrhani' _publ_section_title ; Reinvestigation of the crystal structure of dilead tritellurate (IV), Pb2Te3O8. ; _journal_name_full 'Zeitschrift fur Kristallographie - NCS' _journal_year 2001 _chemical_formula_structural Pb2Te3O8 _chemical_formula_sum 'O8 Pb2 Te3' _chemical_formula_weight 925.18 _chemical_name_common 'Dilead tritellurate IV' _symmetry_cell_setting orthorhombic _symmetry_space_group_name_H-M 'C m c m' _cell_angle_alpha 90.00 _cell_angle_beta 90.00 _cell_angle_gamma 90.00 _cell_formula_units_Z 12 _cell_length_a 19.522(4) _cell_length_b 7.1210(10) _cell_length_c 18.813(4) _cell_measurement_temperature 293(2) _cell_volume 2615.3(9) _diffrn_ambient_temperature 293(2) _exptl_crystal_density_diffrn 7.049 _exptl_crystal_density_meas 7.03(3) _[local]_cod_chemical_formula_sum_orig 'Pb2 Te3 O8' _cod_depositor_comments ; The following automatic conversions were performed: '_symmetry_cell_setting' tag value 'orthorombic' was replaced with 'orthorhombic' value. Automatic conversion script Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana ; _cod_database_code 8100985 loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x, -y, z+1/2' '-x, y, -z+1/2' 'x, -y, -z' 'x+1/2, y+1/2, z' '-x+1/2, -y+1/2, 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, -y, z-1/2' '-x, y, z' '-x+1/2, -y+1/2, -z' 'x+1/2, y+1/2, -z-1/2' 'x+1/2, -y+1/2, z-1/2' '-x+1/2, y+1/2, z' loop_ _atom_site_label _atom_site_type_symbol _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv _atom_site_adp_type _atom_site_occupancy _atom_site_symmetry_multiplicity _atom_site_Wyckoff_symbol _atom_site_calc_flag _atom_site_refinement_flags _atom_site_disorder_assembly _atom_site_disorder_group Pb1 Pb 0.30694(2) 0.36838(5) 0.409754(18) 0.02165(13) Uani 1 16 h d . . . Pb2 Pb 0.19202(3) 0.51144(7) 0.2500 0.02098(14) Uani 1 8 g d S . . Te1 Te 0.5000 0.10935(16) 0.2500 0.0183(2) Uani 1 4 c d S . . Te2 Te 0.5000 0.29782(12) 0.07310(4) 0.01944(19) Uani 1 8 f d S . . Te3 Te 0.38651(4) 0.84543(8) 0.41615(3) 0.01857(15) Uani 1 16 h d . . . Te4 Te 0.38797(5) 0.56518(11) 0.2500 0.01803(18) Uani 1 8 g d S . . O1 O 0.5000 0.0909(14) 0.1354(5) 0.026(2) Uani 1 8 f d S . . O2 O 0.4160(6) 0.0000 0.5000 0.028(2) Uani 1 8 e d S . . O3 O 0.3243(4) 0.7013(11) 0.4683(4) 0.0279(15) Uani 1 16 h d . . . O4 O 0.3352(4) 0.6859(9) 0.3215(3) 0.0228(13) Uani 1 16 h d . . . O5 O 0.3285(4) 0.0335(9) 0.3839(3) 0.0232(14) Uani 1 16 h d . . . O6 O 0.4278(4) 0.4314(11) 0.1130(4) 0.0296(15) Uani 1 16 h d . . . O7 O 0.4270(5) 0.9433(13) 0.2500 0.0205(18) Uani 1 8 g d S . . O8 O 0.3375(6) 0.3442(13) 0.2500 0.027(2) Uani 1 8 g d S . . loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_23 _atom_site_aniso_U_13 _atom_site_aniso_U_12 Pb1 0.0224(2) 0.0237(2) 0.01878(18) -0.00021(12) -0.00109(13) 0.00150(13) Pb2 0.0206(3) 0.0225(3) 0.0198(2) 0.000 0.000 0.0003(2) Te1 0.0176(6) 0.0180(5) 0.0193(5) 0.000 0.000 0.000 Te2 0.0194(4) 0.0206(4) 0.0182(3) 0.0011(3) 0.000 0.000 Te3 0.0194(3) 0.0201(3) 0.0162(2) 0.00186(18) 0.0009(2) 0.0007(2) Te4 0.0208(4) 0.0177(4) 0.0156(3) 0.000 0.000 0.0009(3) O1 0.038(6) 0.026(5) 0.016(4) 0.003(3) 0.000 0.000 O2 0.023(5) 0.045(6) 0.016(4) -0.006(4) 0.000 0.000 O3 0.029(4) 0.031(4) 0.024(3) 0.002(3) 0.005(3) -0.008(3) O4 0.024(4) 0.027(3) 0.018(3) -0.003(2) 0.002(3) 0.004(3) O5 0.027(4) 0.023(3) 0.020(3) 0.000(2) 0.001(3) -0.001(3) O6 0.012(3) 0.034(4) 0.043(4) -0.005(3) 0.004(3) 0.003(3) O7 0.013(5) 0.023(4) 0.025(4) 0.000 0.000 -0.004(4) O8 0.025(6) 0.016(4) 0.040(5) 0.000 0.000 -0.006(4) loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_distance _geom_bond_site_symmetry_2 _geom_bond_publ_flag Pb1 O3 2.372(7) 4_566 ? Pb1 O6 2.440(7) 10_556 ? Pb1 O5 2.470(7) . ? Pb1 O3 2.635(7) . ? Pb2 O7 2.373(10) 7_545 ? Pb2 O8 2.439(9) 7 ? Pb2 O5 2.556(6) 7 ? Pb2 O5 2.556(6) 16 ? Pb2 O4 2.732(7) 7_545 ? Pb2 O4 2.732(7) 16_545 ? Te1 O7 1.852(9) 1_545 ? Te1 O7 1.852(9) 3_645 ? Te1 O1 2.161(9) . ? Te1 O1 2.161(9) 10_556 ? Te2 O6 1.859(7) 12_655 ? Te2 O6 1.859(7) . ? Te2 O1 1.882(9) . ? Te3 O5 1.856(7) 1_565 ? Te3 O3 1.868(7) . ? Te3 O2 2.008(3) 1_565 ? Te3 O4 2.338(6) . ? Te4 O8 1.857(10) . ? Te4 O4 1.899(6) 10_556 ? Te4 O4 1.899(6) . ? O2 Te3 2.008(3) 1_545 ? O2 Te3 2.008(3) 4_566 ? O3 Pb1 2.372(7) 4_566 ? O4 Pb2 2.732(7) 7 ? O5 Te3 1.856(7) 1_545 ? O5 Pb2 2.556(6) 7_545 ? O6 Pb1 2.440(7) 10_556 ? O7 Te1 1.852(9) 1_565 ? O7 Pb2 2.373(10) 7 ? O8 Pb2 2.439(9) 7_545 ?