data_2106565
_publ_section_title
;
 Crystal structures of pyroxene-type Zn Si O3 and Zn Mg Si2 O6
;
_journal_name_full               'Acta Crystallographica B (24,1968-38,1982)'
_journal_page_first              1041
_journal_page_last               1049
_journal_volume                  31
_journal_year                    1975
_chemical_formula_sum            'O3 Si Zn'
_chemical_name_systematic        'Zn Si O3'
_space_group_IT_number           15
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_cell_angle_alpha                90
_cell_angle_beta                 111.42
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   9.787
_cell_length_b                   9.161
_cell_length_c                   5.296
_cell_volume                     442.035
_citation_journal_id_ASTM        ACBCAR
_cod_data_source_file            Morimoto_ACBCAR_1975_1949.cif
_cod_data_source_block           O3Si1Zn1
_cod_original_cell_volume        442.0351
_cod_chemical_formula_sum_orig   'O3 Si1 Zn1'
_cod_database_code               2106565
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-x,y,-z+1/2
-x,-y,-z
x,-y,z-1/2
x+1/2,y+1/2,z
-x+1/2,y+1/2,-z+1/2
-x+1/2,-y+1/2,-z
x+1/2,-y+1/2,z-1/2
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
Si1 Si+4 0.3016 0.0849 0.2668 1 0.0
O1 O-2 0.1241 0.0868 0.1473 1 0.0
O3 O-2 0.3533 0.0238 0.0273 1 0.0
O2 O-2 0.3787 0.2393 0.3719 1 0.0
Zn1 Zn+2 0.5 0.3919 0.25 1 0.0
Zn2 Zn+2 0 0.2361 0.25 1 0.0
