data_1011277
_publ_section_title
;
Struttura cristallina di alcuni fosfuri di metalli bivalenti e
trivalenti
;
_journal_coden_ASTM              GCITA9
_journal_name_full               'Gazzetta Chimica Italiana'
_journal_page_first              655
_journal_page_last               664
_journal_volume                  58
_journal_year                    1928
_chemical_formula_structural     'Mg3 P2'
_chemical_formula_sum            'Mg3 P2'
_chemical_name_systematic        'Magnesium phosphide'
_space_group_IT_number           224
_symmetry_cell_setting           cubic
_symmetry_space_group_name_Hall  'P 4n 2 3 -1n'
_symmetry_space_group_name_H-M   'P n -3 m :1'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   5.92
_cell_length_b                   5.92
_cell_length_c                   5.92
_cell_volume                     207.5
_[local]_cod_cif_authors_sg_H-M  'P n -3 m S'
_cod_database_code               1011277
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
x,z,y
y,z,x
z,y,x
z,x,y
y,x,z
x,-y,-z
x,-z,-y
y,-z,-x
z,-y,-x
z,-x,-y
y,-x,-z
-x,y,-z
-x,z,-y
-y,z,-x
-z,y,-x
-z,x,-y
-y,x,-z
-x,-y,z
-x,-z,y
-y,-z,x
-z,-y,x
-z,-x,y
-y,-x,z
1/2-x,1/2-y,1/2-z
1/2-x,1/2-z,1/2-y
1/2-y,1/2-z,1/2-x
1/2-z,1/2-y,1/2-x
1/2-z,1/2-x,1/2-y
1/2-y,1/2-x,1/2-z
1/2-x,1/2+y,1/2+z
1/2-x,1/2+z,1/2+y
1/2-y,1/2+z,1/2+x
1/2-z,1/2+y,1/2+x
1/2-z,1/2+x,1/2+y
1/2-y,1/2+x,1/2+z
1/2+x,1/2-y,1/2+z
1/2+x,1/2-z,1/2+y
1/2+y,1/2-z,1/2+x
1/2+z,1/2-y,1/2+x
1/2+z,1/2-x,1/2+y
1/2+y,1/2-x,1/2+z
1/2+x,1/2+y,1/2-z
1/2+x,1/2+z,1/2-y
1/2+y,1/2+z,1/2-x
1/2+z,1/2+y,1/2-x
1/2+z,1/2+x,1/2-y
1/2+y,1/2+x,1/2-z
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_symmetry_multiplicity
_atom_site_Wyckoff_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_attached_hydrogens
_atom_site_calc_flag
Mg1 Mg2+ 6 d 0. 0.5 0.5 1. 0 d
P1 P3- 4 b 0.25 0.25 0.25 1. 0 d
loop_
_atom_type_symbol
_atom_type_oxidation_number
Mg2+ 2.000
P3- -3.000
