#------------------------------------------------------------------------------ #$Date: 2016-02-16 18:55:33 +0200 (Tue, 16 Feb 2016) $ #$Revision: 176466 $ #$URL: file:///home/coder/svn-repositories/cod/cif/8/10/03/8100360.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_8100360 loop_ _publ_author_name 'Kuz'ma, Yurii' 'Prots, Yurii' 'Grin, Yuri' _publ_section_title ; Crystal structure of erbium vanadium tantal boride, Er(V~0.77~Ta~0.23~) VB~6~ ; _journal_issue 2 _journal_name_full 'Zeitschrift f\"ur Kristallographie - New Crystal Structures' _journal_page_first 159 _journal_page_last 160 _journal_volume 218 _journal_year 2003 _chemical_formula_structural 'Er V1.77 Ta0.23 B6' _chemical_formula_sum 'B24 Er4 Ta0.93 V7.07' _chemical_formula_weight 1456.55 _chemical_name_common 'Er Ta0.23 V1.77 B6' _space_group_IT_number 55 _symmetry_cell_setting orthorhombic _symmetry_space_group_name_Hall '-P 2 2ab' _symmetry_space_group_name_H-M 'P b a m' _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_formula_units_Z 4 _cell_length_a 11.280(2) _cell_length_b 8.940(2) _cell_length_c 3.3900(10) _cell_measurement_temperature 293 _cell_volume 341.9(2) _diffrn_ambient_temperature 295.1500 _exptl_crystal_density_diffrn 7.074(5) _refine_ls_R_factor_obs 0.0336 _refine_ls_wR_factor_obs 0.0336 _cod_original_formula_sum 'Er4 Ta0.93 V7.07 B24' _cod_database_code 8100360 loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '1/2-x, 1/2+y, z' '1/2+x, 1/2-y, z' '-x, -y, z' '-x, -y, -z' '-1/2+x, -1/2-y, -z' '-1/2-x, -1/2+y, -z' 'x, y, -z' loop_ _atom_site_label _atom_site_type_symbol _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_adp_type _atom_site_U_iso_or_equiv _atom_site_symmetry_multiplicity _atom_site_Wyckoff_symbol _atom_site_occupancy Er Er 0.91475(5) 0.32152(6) 0.5 Uani 0.00324(1) 4 h 1 Ta1 Ta 0.37194(1) 0.55391(1) 0.5 Uani 0.0046(3) 4 h 0.232(3) V1 V 0.37194(1) 0.55391(1) 0.5 Uani 0.0046(3) 4 h 0.768(3) V2 V 0.1840(2) 0.3555(2) 0.5 Uani 0.0042(5) 4 h 1 B1 B 0.2370(12) 0.2022(14) 0 Uiso 0.005(2) 4 g 1 B2 B 0.2129(12) 0.5176(15) 0 Uiso 0.004(2) 4 g 1 B3 B 0.0813(12) 0.2409(15) 0 Uiso 0.005(2) 4 g 1 B4 B 0.0671(12) 0.4469(15) 0 Uiso 0.005(2) 4 g 1 B5 B 0.3201(13) 0.3710(15) 0 Uiso 0.006(2) 4 g 1 B6 B 0.0238(13) 0.907(2) 0 Uiso 0.007(2) 4 g 1 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Er 0.0040(3) 0.0021(2) 0.0037(3) -0.0005(2) 0 0 Ta1 0.0050(5) 0.0041(5) 0.0047(5) -0.0012(4) 0 0 V1 0.0050(5) 0.0041(5) 0.0047(5) -0.0012(4) 0 0 V2 0.0052(8) 0.0030(8) 0.0044(8) 0.0022(7) 0 0