data_1510641
_publ_section_title
;
 Transition metal diborides
;
_journal_name_full               'Acta Metallurgica'
_journal_page_first              20
_journal_page_last               25
_journal_paper_doi               10.1016/0001-6160(54)90090-5
_journal_volume                  2
_journal_year                    1954
_chemical_formula_sum            'B2 Cr'
_chemical_name_systematic        'Cr B2'
_space_group_IT_number           191
_symmetry_space_group_name_Hall  '-P 6 2'
_symmetry_space_group_name_H-M   'P 6/m m m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            1
_cell_length_a                   2.97
_cell_length_b                   2.97
_cell_length_c                   3.07
_cell_volume                     23.452
_citation_journal_id_ASTM        AMETAR
_[local]_cod_data_source_file    boron_124.cif
_[local]_cod_data_source_block   B2Cr1
_[local]_cod_chemical_formula_sum_orig 'B2 Cr1'
_cod_original_cell_volume        23.45211
_cod_database_code               1510641
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
x-y,x,z
-y,x-y,z
-x,-y,z
-x+y,-x,z
y,-x+y,z
-y,-x,-z
x-y,-y,-z
x,x-y,-z
y,x,-z
-x+y,y,-z
-x,-x+y,-z
-x,-y,-z
-x+y,-x,-z
y,-x+y,-z
x,y,-z
x-y,x,-z
-y,x-y,-z
y,x,z
-x+y,y,z
-x,-x+y,z
-y,-x,z
x-y,-y,z
x,x-y,z
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
B1 B 0.3333 0.6667 0.5 1 0.0
Cr1 Cr 0 0 0 1 0.0
