data_global _amcsd_formula_title 'Cu2 Ho2 O5' loop_ _publ_author_name 'Garcia-Munoz J' 'Rodriguez-Carvajal J' _journal_name_full 'Journal of Solid State Chemistry' _journal_volume 115 _journal_year 1995 _journal_page_first 324 _journal_page_last 331 _publ_section_title ; Structural characterization of R2 Cu2 O5 (R=Yb,Tm,Er,Y and Ho) oxides by neutron diffraction _cod_database_code 1006083 ; _database_code_amcsd 0013844 _chemical_formula_sum 'Ho2 Cu2 O5' _cell_length_a 10.8096 _cell_length_b 3.4962 _cell_length_c 12.4735 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 471.405 _exptl_crystal_density_diffrn 7.566 _symmetry_space_group_name_H-M 'P n a 21' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2-y,z' '1/2-x,1/2+y,1/2+z' '-x,-y,1/2+z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Ho1 0.20800 0.22700 0.00000 Ho2 0.04240 0.22600 0.33030 Cu1 0.99020 0.66200 0.11500 Cu2 0.26100 0.66400 0.21700 O1 0.17300 0.72600 0.35900 O2 0.32400 0.71200 0.06600 O3 0.12400 0.32000 0.16900 O4 0.42700 0.77600 0.26300 O5 0.42600 0.23000 0.47900