data_global _chemical_name_mineral 'Eriochalcite' loop_ _publ_author_name 'Brownstein S' 'Han N F' 'Gabe E' 'LePage Y' _journal_name_full 'Zeitschrift fur Kristallographie' _journal_volume 189 _journal_year 1989 _journal_page_first 13 _journal_page_last 15 _publ_section_title ; A redetermination of the crystal structure of cupric chloride dihydrate ; _database_code_amcsd 0010986 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Cu Cl2 O2 H4' _cell_length_a 7.4141 _cell_length_b 8.0886 _cell_length_c 3.7458 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 224.634 _exptl_crystal_density_diffrn 2.520 _symmetry_space_group_name_H-M 'P b m n' loop_ _space_group_symop_operation_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_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Cu 0.00000 0.00000 0.00000 0.02115 Cl 0.23998 0.00000 0.37980 0.02267 O 0.00000 0.24020 0.00000 0.03192 H 0.09900 0.27500 0.06400 0.06839