#------------------------------------------------------------------------------
#$Date: 2016-02-14 15:26:36 +0100 (dom 14 de feb de 2016) $
#$Revision: 176435 $
#$URL: svn://www.crystallography.net/cod/cif/2/00/28/2002867.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_2002867
loop_
_publ_author_name
'Mueller-Buschbaum, Hk'
'Tams, G'
_publ_section_title
;
Zur Kristallstruktur von Oxometallaten A M2 O4: Ca Ga(2-x) M(x) O4 mit
M= Fe, Al und M= Cr; Ca Ga.7 Fe.7 Al.6 O4 und Ca Ga1.65 Cr.3
;
_journal_name_full               'Journal of the Less-Common Metals'
_journal_page_first              163
_journal_page_last               169
_journal_paper_doi               10.1016/0022-5088(91)90273-7
_journal_volume                  171
_journal_year                    1991
_chemical_formula_structural     'Ca Ga1.65 Cr.35 O4'
_chemical_formula_sum            'Ca Cr0.35 Ga1.65 O4'
_chemical_name_systematic
;
Calcium gallium chromium oxide (1/1.65/.35/4)
;
_space_group_IT_number           62
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_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_formula_units_Z            4
_cell_length_a                   9.0698(36)
_cell_length_b                   2.9634(14)
_cell_length_c                   10.6021(31)
_cell_volume                     285.0
_refine_ls_R_factor_all          0.052
_cod_original_formula_sum        'Ca Cr.35 Ga1.65 O4'
_cod_database_code               2002867
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
1/2+x,1/2-y,1/2-z
-x,1/2+y,-z
1/2-x,-y,1/2+z
-x,-y,-z
1/2-x,1/2+y,1/2+z
x,1/2-y,z
1/2+x,y,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
Ca1 Ca2+ 4 c 0.7587(3) 0.25 0.6579(2) 1. 0 d
Ga1 Ga3+ 4 c 0.4381(2) 0.25 0.6122(2) 0.825 0 d
Cr1 Cr3+ 4 c 0.4381(2) 0.25 0.6122(2) 0.175 0 d
Ga2 Ga3+ 4 c 0.4173(2) 0.25 0.1020(2) 0.825 0 d
Cr2 Cr3+ 4 c 0.4173(2) 0.25 0.1020(2) 0.175 0 d
O1 O2- 4 c 0.209(1) 0.25 0.160(1) 1. 0 d
O2 O2- 4 c 0.116(1) 0.25 0.477(1) 1. 0 d
O3 O2- 4 c 0.527(1) 0.25 0.785(1) 1. 0 d
O4 O2- 4 c 0.421(1) 0.25 0.430(1) 1. 0 d
loop_
_atom_type_symbol
_atom_type_oxidation_number
Ca2+ 2.000
Ga3+ 3.000
Cr3+ 3.000
O2- -2.000
