data_global _amcsd_formula_title 'Ba2 Cu2 Nd2 O11 Ti2' loop_ _publ_author_name 'Gomez-Romero P' 'Palacin M' 'Rodriguez-Carvajal J' _journal_name_full 'Chemistry of Materials' _journal_volume 6 _journal_year 1994 _journal_page_first 2118 _journal_page_last 2122 _publ_section_title ; Crystal structure refinement of the layered copper-titanium perovskites Ln2 Ba2 Cu2 Ti2 O11 (Ln=La, Nd) from neutron powder diffraction data _cod_database_code 1006075 ; _database_code_amcsd 0012203 _chemical_formula_sum 'Nd2 Ba2 Cu2 Ti2 O11' _cell_length_a 3.91275 _cell_length_b 3.91275 _cell_length_c 15.7614 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 241.301 _exptl_crystal_density_diffrn 6.620 _symmetry_space_group_name_H-M 'P 4/m m m' loop_ _space_group_symop_operation_xyz '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' '-x,y,z' 'x,-y,-z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Nd1 0.50000 0.50000 0.00000 Ba1 0.50000 0.50000 0.23570 Nd2 0.50000 0.50000 0.50000 Cu1 0.00000 0.00000 0.10840 Ti1 0.00000 0.00000 0.37010 O1 0.00000 0.00000 0.50000 O2 0.50000 0.00000 0.38410 O3 0.00000 0.00000 0.25540 O4 0.50000 0.00000 0.09740