data_global _chemical_name_mineral 'Guyanaite' loop_ _publ_author_name 'Christensen N' 'Hansen P' 'Lehmann M S' _journal_name_full 'Journal of Solid State Chemistry' _journal_volume 19 _journal_year 1976 _journal_page_first 299 _journal_page_last 304 _publ_section_title ; Isotope effects in the bonds of beta-CrOOH and beta-CrOOD ; _database_code_amcsd 0013341 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Cr O2 H' _cell_length_a 4.862 _cell_length_b 4.298 _cell_length_c 2.995 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 62.586 _exptl_crystal_density_diffrn 4.511 _symmetry_space_group_name_H-M 'P n n m' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2-y,1/2+z' '1/2-x,1/2+y,1/2-z' '1/2-x,1/2+y,1/2+z' '1/2+x,1/2-y,1/2-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 _atom_site_occupancy _atom_site_U_iso_or_equiv Cr 0.00000 0.00000 0.00000 1.00000 0.00785 O1 0.35260 0.23570 0.00000 1.00000 0.00785 H 0.49940 0.03950 0.00000 0.50000 0.00785