#------------------------------------------------------------------------------
#$Date: 2015-01-27 21:58:39 +0200 (Tue, 27 Jan 2015) $
#$Revision: 130149 $
#$URL: svn://www.crystallography.net/cod/cif/1/00/13/1001388.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_1001388
loop_
_publ_author_name
'Riou, D'
'Labbe, Ph'
'Goreaud, M'
_publ_section_title
;
The diphosphate K Fe P₂ O₇: Structure and possibilities for
insertion in the host framework
;
_journal_coden_ASTM              EJSCE5
_journal_name_full
;
European Journal of Solid State Inorganic Chemistry
;
_journal_page_first              215
_journal_page_last               229
_journal_volume                  25
_journal_year                    1988
_chemical_formula_structural     'K Fe P2 O7'
_chemical_formula_sum            'Fe K O7 P2'
_chemical_name_systematic        'Potassium iron(III) diphosphate'
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_cell_angle_alpha                90
_cell_angle_beta                 106.498(9)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.3523(7)
_cell_length_b                   9.9875(6)
_cell_length_c                   8.1872(11)
_cell_volume                     576.4
_refine_ls_R_factor_all          0.025
_cod_database_code               1001388
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-x,1/2+y,1/2-z
-x,-y,-z
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
K1 K1+ 4 e 0.17883(9) 0.32022(6) 0.05316(8) 1. 0 d
Fe1 Fe3+ 4 e 0.23569(4) 0.59970(3) 0.76013(4) 1. 0 d
P1 P5+ 4 e 0.44168(8) 0.63697(5) 0.19028(7) 1. 0 d
P2 P5+ 4 e 0.13360(7) 0.90456(6) 0.82991(7) 1. 0 d
O1 O2- 4 e 0.3403(2) 0.5595(2) 0.3131(2) 1. 0 d
O2 O2- 4 e 0.0814(2) 0.7340(2) 0.2540(2) 1. 0 d
O3 O2- 4 e 0.6399(2) 0.5795(2) 0.2316(2) 1. 0 d
O4 O2- 4 e 0.1458(3) 0.5893(2) 0.5141(2) 1. 0 d
O5 O2- 4 e 0.3213(3) 0.6075(2) 0.0123(2) 1. 0 d
O6 O2- 4 e .0000(2) 0.4934(2) 0.2223(2) 1. 0 d
O7 O2- 4 e 0.4521(2) 0.7839(2) 0.2412(2) 1. 0 d
loop_
_atom_type_symbol
_atom_type_oxidation_number
K1+ 1.000
Fe3+ 3.000
P5+ 5.000
O2- -2.000
