data_CrF2
_chemical_name_systematic 'Chromium(II) fluoride'
_chemical_formula_structural 'Cr F2'
_chemical_formula_sum 'Cr1 F2'
_chemical_name_structure_type CuF2
_exptl_crystal_density_diffrn 3.84
_publ_section_title

;
The crystal structure and interatomic bonding of chromous and chromic
fluorides
;
loop_
_citation_id
_citation_journal_full
_citation_year
_citation_journal_volume
_citation_page_first
_citation_page_last
_citation_journal_id_ASTM
primary 'Proceedings of the Chemical Society (London)' 1957 1957 232 232 PCSLAW
loop_
_publ_author_name
'Jack, K.H.'
'Maitland, R.'
_cell_length_a 4.732(2)
_cell_length_b 4.718(2)
_cell_length_c 3.505(2)
_cell_angle_alpha 90.
_cell_angle_beta 96.52(5)
_cell_angle_gamma 90.
_cell_volume 77.75
_cell_formula_units_Z 2
_symmetry_space_group_name_H-M 'P 1 21/n 1'
_symmetry_Int_Tables_number 14
loop_
_symmetry_equiv_pos_site_id
_symmetry_equiv_pos_as_xyz
1 '-x+1/2, y+1/2, -z+1/2'
2 '-x, -y, -z'
3 'x+1/2, -y+1/2, z+1/2'
4 'x, y, z'
loop_
_atom_type_symbol
_atom_type_oxidation_number
Cr2+ 2
F1- -1
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_B_iso_or_equiv
_atom_site_occupancy
_atom_site_attached_hydrogens
Cr1 Cr2+ 2 a 0 0 0 . 1. 0
F1 F1- 4 e 0.297(3) 0.297(3) 0.044(3) . 1. 0