#------------------------------------------------------------------------------
#$Date$
#$Revision$
#$URL$
#------------------------------------------------------------------------------
#
# 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_3000011
loop_
_publ_author_name
'Armel Le Bail'
'Thomas Hansen'
'Wilson A. Crichton'
_publ_section_title
;
 Tetrapotassium pyrophosphates gamma and delta-K4P2O7
;
_journal_name_full               'Powder Diffraction'
_journal_page_first              2
_journal_page_last               12
_journal_paper_doi               10.1017/S0885715612000954
_journal_volume                  28
_journal_year                    2013
_chemical_formula_moiety         'O7 P2, 4(K)'
_chemical_formula_sum            'K4 O7 P2'
_chemical_formula_weight         330.34
_chemical_name_common            'tetrapotassium pyrophosphate'
_space_group_IT_number           194
_symmetry_cell_setting           hexagonal
_symmetry_space_group_name_Hall  '-P 6c 2c'
_symmetry_space_group_name_H-M   'P 63/m m c'
_cell_angle_alpha                90.00000
_cell_angle_beta                 90.00000
_cell_angle_gamma                120.00000
_cell_formula_units_Z            2
_cell_length_a                   5.9645(3)
_cell_length_b                   5.9645(3)
_cell_length_c                   14.4972(8)
_cell_measurement_temperature    570
_cell_volume                     446.65(4)
_computing_molecular_graphics    Diamond
_computing_structure_refinement  FULLPROF
_computing_structure_solution    ESPOIR
_diffrn_ambient_temperature      570
_diffrn_radiation_type           X-ray
_diffrn_radiation_wavelength     1.54056
_diffrn_source                   'X-ray tube'
_diffrn_source_target            Cu
_exptl_absorpt_coefficient_mu    21.264
_exptl_crystal_density_diffrn    2.456
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             324.0
_pd_meas_2theta_range_inc        0.030000
_pd_meas_2theta_range_max        139.00000
_pd_meas_2theta_range_min        9.00000
_pd_meas_number_of_points        4334
_pd_proc_2theta_range_inc        0.030000
_pd_proc_2theta_range_max        138.8166
_pd_proc_2theta_range_min        8.8166
_pd_proc_ls_prof_R_factor        8.43
_pd_proc_ls_prof_wR_expected     3.90
_pd_proc_ls_prof_wR_factor       7.55
_pd_proc_wavelength              1.540560
_pd_spec_mounting                ' ?'
_refine_ls_number_parameters     55
_refine_ls_number_reflns         215
_refine_ls_number_restraints     0
_refine_ls_R_I_factor            3.19
_cod_data_source_file            gamma-K4P2O7-300C.cif
_cod_data_source_block           gamma-K4P2O7-300C
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Hexagonal' changed to 'hexagonal'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

 Releasing structure 3000011 into public domain as published material.
;
_cod_original_cell_volume        446.64(6)
_cod_original_formula_sum        'K4 O7 P2 '
_cod_database_code               3000011
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
x-y,x,z+1/2
-y,x-y,z
-x,-y,z+1/2
-x+y,-x,z
y,-x+y,z+1/2
-y,-x,z
-x,-x+y,z+1/2
-x+y,y,z
y,x,z+1/2
x,x-y,z
x-y,-y,z+1/2
-x,-y,-z
-x+y,-x,-z+1/2
y,-x+y,-z
x,y,-z+1/2
x-y,x,-z
-y,x-y,-z+1/2
y,x,-z
x,x-y,-z+1/2
x-y,-y,-z
-y,-x,-z+1/2
-x,-x+y,-z
-x+y,y,-z+1/2
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_occupancy
_atom_site_adp_type
_atom_site_type_symbol
K1 0.33333 0.66667 0.58970(12) 0.0519(9) 1.00000 Uiso K
K2 0.00000 0.00000 0.25000 0.0410(17) 1.00000 Uiso K
K3 0.00000 0.00000 0.50000 0.0411(18) 1.00000 Uiso K
P 0.33333 0.66667 0.35575(15) 0.0264(8) 1.00000 Uiso P
O1 0.1945(3) 0.3890(3) 0.38260(17) 0.0660(9) 1.00000 Uiso O
O2 0.33333 0.66667 0.25000 0.080(3) 1.00000 Uiso O
loop_
_atom_type_symbol
_atom_type_scat_Cromer_Mann_a1
_atom_type_scat_Cromer_Mann_b1
_atom_type_scat_Cromer_Mann_a2
_atom_type_scat_Cromer_Mann_b2
_atom_type_scat_Cromer_Mann_a3
_atom_type_scat_Cromer_Mann_b3
_atom_type_scat_Cromer_Mann_a4
_atom_type_scat_Cromer_Mann_b4
_atom_type_scat_Cromer_Mann_c
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
k 8.21860 12.79490 7.43980 0.77480 1.05190 213.18700 0.86590 41.68410 1.42280
0.36500 1.06600
International_Tables_for_Crystallography_Vol.C(1991)_Tables_6.1.1.4_and_6.1.1.5
p 6.43450 1.90670 4.17910 27.15700 1.78000 0.52600 1.49080 68.16450 1.11490
0.28300 0.43400
International_Tables_for_Crystallography_Vol.C(1991)_Tables_6.1.1.4_and_6.1.1.5
o 3.04850 13.27710 2.28680 5.70110 1.54630 0.32390 0.86700 32.90890 0.25080
0.04700 0.03200
International_Tables_for_Crystallography_Vol.C(1991)_Tables_6.1.1.4_and_6.1.1.5
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_site_symmetry_2
K1 K1 4.3154(15) 13_566
K1 K2 4.1544(10) 2_555
K1 K3 3.6810(6) .
K1 P 3.392(3) .
K1 P 3.5332(6) 13_566
K1 O1 3.327(3) .
K1 O1 3.023(2) 13_666
K2 K3 3.62429 .
K2 P 3.7695(9) .
K2 O1 2.781(2) .
K2 O2 3.443624(2) .
K3 O1 2.6333(20) .
P P 3.066(3) 14_565
P O1 1.4862(17) .
P O2 1.533(2) .