data_9012530
_publ_section_title
;Least-squares refinement of the crystal structures of orthorhombic HgO and of
 Hg2O2NaI Locality: synthetic
;
_journal_name_full               'Acta Chemica Scandinavica'
_journal_page_first              1305
_journal_page_last               1306
_journal_paper_doi               10.3891/acta.chem.scand.18-1305
_journal_volume                  18
_journal_year                    1964
_chemical_formula_sum            'Hg O'
_chemical_name_mineral           Montroydite
_space_group_IT_number           62
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   6.6129
_cell_length_b                   5.5208
_cell_length_c                   3.5219
_cell_volume                     128.579
_exptl_crystal_density_diffrn    11.189
_cod_database_code               9012530
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
x,1/2-y,z
-x,1/2+y,-z
1/2-x,1/2+y,1/2+z
1/2+x,1/2-y,1/2-z
1/2+x,y,1/2-z
1/2-x,-y,1/2+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
Hg 0.11360 0.25000 0.24560 0.01520
O 0.35920 0.25000 0.59550 0.01862
