#------------------------------------------------------------------------------
#$Date: 2016-02-14 16:26:36 +0200 (Sun, 14 Feb 2016) $
#$Revision: 176435 $
#$URL: svn://www.crystallography.net/cod/cif/2/00/25/2002587.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_2002587
loop_
_publ_author_name
'Postel, M von'
'Mueller-Buschbaum, Hk'
_publ_section_title
;
Zur Kenntnis von Ba (Mg Zn) V2 O8, Ba Mn2 V2 O8 und Ba1/2 Sr1/2 Ni2 V2
O8
;
_journal_name_full
;
Zeitschrift fuer Anorganische und Allgemeine Chemie
;
_journal_page_first              97
_journal_page_last               100
_journal_paper_doi               10.1002/zaac.19926150919
_journal_volume                  615
_journal_year                    1992
_chemical_formula_structural     '(Ba0.5 Sr0.5) Ni2 (V O4)2'
_chemical_formula_sum            'Ba0.5 Ni2 O8 Sr0.5 V2'
_chemical_name_systematic
;
Hemibarium hemistrontium dinickel bis(vanadate)
;
_space_group_IT_number           142
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'I 4bw 2aw -1bw'
_symmetry_space_group_name_H-M   'I 41/a c d :1'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   12.2248(20)
_cell_length_b                   12.2248(20)
_cell_length_c                   8.3245(15)
_cell_volume                     1244.1
_refine_ls_R_factor_all          0.057
_cod_original_sg_symbol_H-M      'I 41/a c d S'
_cod_original_formula_sum        'Ba.5 Ni2 O8 Sr.5 V2'
_cod_database_code               2002587
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
x,-y,1/2+z
x,1/2+y,1/4-z
x,1/2-y,3/4-z
-x,-y,z
-x,y,1/2+z
-x,1/2-y,1/4-z
-x,1/2+y,3/4-z
-y,x,-z
y,x,1/2-z
1/2-y,x,3/4+z
1/2+y,x,1/4+z
y,-x,-z
-y,-x,1/2-z
1/2+y,-x,3/4+z
1/2-y,-x,1/4+z
1/2+x,1/2+y,1/2+z
1/2+x,1/2-y,z
1/2+x,y,3/4-z
1/2+x,-y,1/4-z
1/2-x,1/2-y,1/2+z
1/2-x,1/2+y,z
1/2-x,-y,3/4-z
1/2-x,y,1/4-z
1/2-y,1/2+x,1/2-z
1/2+y,1/2+x,-z
-y,1/2+x,1/4+z
y,1/2+x,3/4+z
1/2+y,1/2-x,1/2-z
1/2-y,1/2-x,-z
y,1/2-x,1/4+z
-y,1/2-x,3/4+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
Ba1 Ba2+ 8 a 0. 0. 0. 0.5 0 d
Sr1 Sr2+ 8 a 0. 0. 0. 0.5 0 d
Ni1 Ni2+ 16 f 0.3316(1) 0.3316(1) 0.25 1. 0 d
V1 V5+ 16 e 0.25 0.0796(3) 0.125(1) 1. 0 d
O1 O2- 32 g 0.997(1) 0.3404(9) 0.470(1) 1. 0 d
O2 O2- 32 g 0.1583(9) 0.3261(9) 0.241(1) 1. 0 d
loop_
_atom_type_symbol
_atom_type_oxidation_number
Ba2+ 2.000
Sr2+ 2.000
Ni2+ 2.000
V5+ 5.000
O2- -2.000
