#------------------------------------------------------------------------------ #$Date: 2011-09-28 15:24:46 +0100 (Wed, 28 Sep 2011) $ #$Revision: 26848 $ #$URL: svn://www.crystallography.net/cod/cif/2/00/28/2002803.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_2002803 _chemical_name_systematic 'Calcium dineodymoberyllate' _chemical_formula_structural 'Ca (Be Nd2 O5)' _chemical_formula_sum 'Be Ca Nd2 O5' _publ_section_title ; Ein Beitrag ueber die Verbindung Ca Be Nd2 O5 und Phasen der Zusammensetzung M(1-x) M'(x) Be Ln2 O5 (M=Ca, Ba; M'=Sr; x=0.5) ; loop_ _publ_author_name 'Rettich, R' 'Mueller-Buschbaum, Hk' _journal_name_full ; Zeitschrift fuer Anorganische und Allgemeine Chemie ; _journal_volume 621 _journal_year 1995 _journal_page_first 562 _journal_page_last 566 _cell_length_a 9.4483 _cell_length_b 7.1548 _cell_length_c 6.4834 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 438.3 _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 Ca2+ 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 0.9757(1) 0.25 0.5976(1) 1. 0 d Nd2 Nd3+ 8 d 0.8275(1) 0.0236(1) 0.0769(1) 0.5 0 d Ca1 Ca2+ 8 d 0.8275(1) 0.0236(1) 0.0769(1) 0.5 0 d Be1 Be2+ 4 c 0.1018(7) 0.25 0.1951(7) 1. 0 d O1 O2- 8 d 0.429(1) 0.943(1) 0.810(1) 1. 0 d O2 O2- 4 c 0.227(1) 0.25 0.669(1) 1. 0 d O3 O2- 4 c 0.276(1) 0.25 0.140(1) 1. 0 d O4 O2- 4 c 0.511(1) 0.25 0.521(1) 1. 0 d _refine_ls_R_factor_all 0.062 _cod_database_code 2002803