#------------------------------------------------------------------------------
#$Date: 2016-02-14 14:26:36 +0000 (Sun, 14 Feb 2016) $
#$Revision: 176435 $
#$URL: svn://www.crystallography.net/cod/cif/2/00/25/2002572.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_2002572
loop_
_publ_author_name
'Vogt, R'
'Mueller-Buschbaum, Hk'
_publ_section_title
;
Magnesium in einer ungewoehnlichen tetragonal-pyramidalen Koordination:
zur Kenntnis von Cu(2-x) Mg(x) V2 O7 (x= 1/2 und 2/3)
;
_journal_name_full               'Journal of the Less-Common Metals'
_journal_page_first              309
_journal_page_last               314
_journal_paper_doi               10.1016/0022-5088(91)90333-Y
_journal_volume                  170
_journal_year                    1991
_chemical_formula_structural     '(Cu1.5 Mg0.5) (V2 O7)'
_chemical_formula_sum            'Cu1.5 Mg0.5 O7 V2'
_chemical_name_systematic        'Copper magnesium divanadate (1.5/0.5/1)'
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      15
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_cell_angle_alpha                90
_cell_angle_beta                 110.624(99)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.6603(56)
_cell_length_b                   8.0887(80)
_cell_length_c                   10.1166(87)
_cell_volume                     586.7
_refine_ls_R_factor_all          0.051
_cod_original_formula_sum        'Cu1.5 Mg.5 O7 V2'
_cod_database_code               2002572
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-x,y,1/2-z
-x,-y,-z
x,-y,1/2+z
1/2+x,1/2+y,z
1/2-x,1/2+y,1/2-z
1/2-x,1/2-y,-z
1/2+x,1/2-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
Cu1 Cu2+ 8 f 0.1901(2) 0.0742(2) 0.4857(1) 0.75 0 d
Mg1 Mg2+ 8 f 0.1901(2) 0.0742(2) 0.4857(1) 0.25 0 d
V1 V5+ 8 f 0.2278(2) 0.7257(2) 0.2881(1) 1. 0 d
O1 O2- 8 f 0.268(1) 0.754(1) 0.131(1) 1. 0 d
O2 O2- 8 f 0.119(1) 0.088(1) 0.103(1) 1. 0 d
O3 O2- 8 f 0.258(1) 0.405(1) 0.131(1) 1. 0 d
O4 O2- 4 e 0.5 0.142(2) 0.25 1. 0 d
loop_
_atom_type_symbol
_atom_type_oxidation_number
Cu2+ 2.000
Mg2+ 2.000
V5+ 5.000
O2- -2.000