#------------------------------------------------------------------------------ #$Date: 2008-01-26 13:05:32 +0000 (Sat, 26 Jan 2008) $ #$Revision: 19 $ #$URL: svn://www.crystallography.net/cod/cif/2/2002688.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_2002688 _chemical_name_systematic 'Europium(II) beryllium dineodymium oxide' _chemical_formula_structural 'Eu Be Nd2 O5' _chemical_formula_sum 'Be Eu Nd2 O5' _publ_section_title ; Eu3+ und Eu2+ in Oxometallaten der Zusammensetzung M Be Ln2 O5: Sr Be Eu2 O5 und Eu Be Nd2 O5 ; loop_ _publ_author_name 'Mueller-Buschbaum, Hk' 'Muenchau, S' _journal_name_full ; Zeitschrift fuer Anorganische und Allgemeine Chemie ; _journal_volume 620 _journal_year 1994 _journal_page_first 1033 _journal_page_last 1036 _cell_length_a 9.5338(14) _cell_length_b 7.2249(11) _cell_length_c 6.5443(9) _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 450.8 _cell_formula_units_Z 4 _symmetry_space_group_name_H-M 'P n m a' _symmetry_Int_Tables_number 62 _symmetry_cell_setting orthorhombic loop_ _symmetry_equiv_pos_as_xyz 'x,y,z' '1/2+x,1/2-y,1/2-z' '-x,1/2+y,-z' '1/2-x,-y,1/2+z' '-x,-y,-z' '1/2-x,1/2+y,1/2+z' 'x,1/2-y,z' '1/2+x,y,1/2-z' loop_ _atom_type_symbol _atom_type_oxidation_number Nd3+ 3.000 Eu2+ 2.000 Be2+ 2.000 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 Nd1 Nd3+ 4 c 0.9755(1) 0.25 0.5968(2) 1. 0 d Eu1 Eu2+ 8 d 0.8269(1) 0.0224(1) 0.0807(1) 0.5 0 d Nd2 Nd3+ 8 d 0.8269(1) 0.0224(1) 0.0807(1) 0.5 0 d Be1 Be2+ 4 c 0.0983(10) 0.25 0.1865(11) 1. 0 d O1 O2- 8 d 0.435(1) 0.940(1) 0.810(1) 1. 0 d O2 O2- 4 c 0.224(1) 0.25 0.665(1) 1. 0 d O3 O2- 4 c 0.273(1) 0.25 0.135(1) 1. 0 d O4 O2- 4 c 0.507(1) 0.25 0.520(1) 1. 0 d _refine_ls_R_factor_all 0.072