#------------------------------------------------------------------------------
#$Date: 2016-02-14 15:26:36 +0100 (dom 14 de feb de 2016) $
#$Revision: 176435 $
#$URL: svn://www.crystallography.net/cod/cif/2/01/45/2014585.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/. The original data for this entry
# were provided by IUCr Journals, http://journals.iucr.org/.
#
# The file may be used within the scientific community so long as
# proper attribution is given to the journal article from which the
# data were obtained.
#
data_2014585
loop_
_publ_author_name
'Weakley,  T. J. R.'
'Ylvisaker, E. R.'
'Yager, R. J.'
'Wu, P.'
'Photinos, P.'
'Abrahams, S. C.'
_publ_section_title
;
 K₂[HCr₂AsO₁₀]: redetermination of phase II and the predicted
 structure of phase I
;
_journal_issue                   12
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              i113
_journal_page_last               i116
_journal_paper_doi               10.1107/S0108270104026368
_journal_volume                  60
_journal_year                    2004
_chemical_formula_iupac          'K2 [H1 Cr2 As1 O10]'
_chemical_formula_moiety         'H1 As1 Cr2 O10 , K2'
_chemical_formula_sum            'As Cr2 H K2 O10'
_chemical_formula_weight         418.13
_chemical_name_common
;
dipotassium hydrogen chromatoarsenate
;
_chemical_name_systematic
;
dipotassium hydrogen chromatoarsenate
;
_space_group_IT_number           144
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_Hall  'P 31'
_symmetry_space_group_name_H-M   'P 31'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            3
_cell_length_a                   7.6931(8)
_cell_length_b                   7.6931(8)
_cell_length_c                   14.623(3)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      16.4
_cell_measurement_theta_min      14.1
_cell_volume                     749.50(19)
_computing_cell_refinement       'CAD-4-PC Software'
_computing_data_collection       'CAD-4-PC Software (Enraf-Nonius, 1993)'
_computing_data_reduction
'TEXSAN (Molecular Structure Corporation, 1997)'
_computing_molecular_graphics    'ATOMS (Dowty, 2003)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    TEXSAN
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Enraf-Nonius CAD-4'
_diffrn_measurement_method       ω/2θ
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0188
_diffrn_reflns_av_sigmaI/netI    0.0294
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            2063
_diffrn_reflns_theta_full        29.98
_diffrn_reflns_theta_max         29.98
_diffrn_reflns_theta_min         3.06
_diffrn_standards_decay_%        0.00
_diffrn_standards_interval_count 300
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    6.326
_exptl_absorpt_correction_T_max  0.320
_exptl_absorpt_correction_T_min  0.205
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details   '(de Meulenaer & Tompa, 1965)'
_exptl_crystal_colour            'intense red-orange'
_exptl_crystal_density_diffrn    2.779
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'hexagonal prism'
_exptl_crystal_F_000             600
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.18
_refine_diff_density_max         1.314
_refine_diff_density_min         -1.077
_refine_ls_abs_structure_details 'Flack (1983), with how many Friedel pairs'
_refine_ls_abs_structure_Flack   0.17(3)
_refine_ls_extinction_coef       0.0000072(11)
_refine_ls_extinction_expression 'Acta Cryst. (1968). A24, p. 213, eq. (3)'
_refine_ls_extinction_method     'Zachariasen (1967)'
_refine_ls_goodness_of_fit_ref   1.292
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     137
_refine_ls_number_reflns         2051
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.291
_refine_ls_R_factor_all          0.0505
_refine_ls_R_factor_gt           0.0503
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[σ²(Fo²)+(0.0086P)²+7.6027P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1292
_refine_ls_wR_factor_ref         0.1293
_reflns_number_gt                2040
_reflns_number_total             2051
_reflns_threshold_expression     I>2σ(I)
_cod_data_source_file            ta1472.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_formula_sum        'H1 As1 Cr2 K2 O10'
_cod_database_code               2014585
loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-y, x-y, z+1/3'
'-x+y, -x, z+2/3'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_adp_type
_atom_site_calc_flag
_atom_site_refinement_flags
_atom_site_occupancy
_atom_site_disorder_assembly
_atom_site_disorder_group
_atom_site_type_symbol
As1 0.10826(13) -0.02094(14) 0.49989(8) 0.01945(18) Uani d . 1 . . As
Cr1 0.0041(2) -0.4249(2) 0.60617(10) 0.0200(3) Uani d . 1 . . Cr
Cr2 0.4201(2) 0.4191(2) 0.43023(10) 0.0201(3) Uani d . 1 . . Cr
O1 -0.1383(15) -0.3891(14) 0.6749(7) 0.039(2) Uani d . 1 . . O
O2 -0.1214(19) -0.5908(15) 0.5301(7) 0.055(3) Uani d . 1 . . O
O3 0.1440(15) -0.4780(16) 0.6664(8) 0.046(2) Uani d . 1 . . O
O4 0.1691(11) -0.1884(12) 0.5449(6) 0.0289(16) Uani d . 1 . . O
O5 -0.0079(14) -0.0971(13) 0.4020(5) 0.0361(19) Uani d . 1 . . O
O6 -0.0392(14) 0.0180(15) 0.5724(5) 0.0349(18) Uani d . 1 . . O
O7 0.3389(12) 0.1870(11) 0.4962(6) 0.0310(17) Uani d . 1 . . O
O8 0.2329(16) 0.4022(16) 0.3750(8) 0.046(2) Uani d . 1 . . O
O9 0.5089(19) 0.5990(14) 0.5027(6) 0.047(3) Uani d . 1 . . O
O10 0.5860(14) 0.4415(15) 0.3572(6) 0.0375(19) Uani d . 1 . . O
K1 -0.0199(4) -0.4513(3) 0.34633(17) 0.0288(4) Uani d . 1 . . K
K2 0.6027(4) -0.0061(4) 0.51916(17) 0.0292(4) Uani d . 1 . . K
H 0.0256 -0.0279 0.3206 0.050 Uiso c . 1 . . H
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
As1 0.0201(4) 0.0202(4) 0.0171(3) 0.0094(4) -0.0003(3) 0.0027(3)
Cr1 0.0197(7) 0.0170(6) 0.0210(7) 0.0075(6) 0.0006(5) 0.0047(5)
Cr2 0.0223(7) 0.0167(6) 0.0211(6) 0.0096(6) 0.0005(5) 0.0011(5)
O1 0.040(5) 0.035(5) 0.048(5) 0.023(4) 0.016(4) 0.012(4)
O2 0.072(8) 0.030(5) 0.031(4) 0.002(5) -0.004(4) -0.005(3)
O3 0.034(5) 0.046(6) 0.060(6) 0.022(4) -0.002(4) 0.020(5)
O4 0.022(3) 0.030(4) 0.038(4) 0.015(3) 0.007(3) 0.016(3)
O5 0.043(5) 0.039(5) 0.013(3) 0.010(4) -0.007(3) -0.002(3)
O6 0.050(5) 0.049(5) 0.021(4) 0.036(5) -0.004(3) -0.007(3)
O7 0.020(3) 0.017(3) 0.042(4) -0.002(3) -0.006(3) 0.011(3)
O8 0.045(5) 0.048(6) 0.052(6) 0.029(5) -0.003(4) 0.008(4)
O9 0.082(8) 0.028(4) 0.025(4) 0.024(5) 0.002(4) -0.007(3)
O10 0.037(5) 0.047(5) 0.030(4) 0.023(4) 0.005(3) 0.005(3)
K1 0.0296(11) 0.0286(11) 0.0291(10) 0.0153(9) 0.0029(8) 0.0010(8)
K2 0.0298(11) 0.0278(11) 0.0278(10) 0.0128(9) -0.0017(9) -0.0010(8)
loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
As As 0.0499 2.0058 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
Cr Cr 0.3209 0.6236 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
H H 0.0000 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
K K 0.2009 0.2494 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
O O 0.0106 0.0060 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
loop_
_diffrn_standard_refln_index_h
_diffrn_standard_refln_index_k
_diffrn_standard_refln_index_l
5 -1 2
-5 1 -2
-3 -2 -3
loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
O5 As1 O6 108.6(5)
O5 As1 O7 115.9(4)
O6 As1 O7 109.4(5)
O5 As1 O4 112.0(5)
O6 As1 O4 110.7(4)
O7 As1 O4 99.9(4)
O3 Cr1 O2 113.2(7)
O3 Cr1 O1 107.7(6)
O2 Cr1 O1 112.3(6)
O3 Cr1 O4 107.5(4)
O2 Cr1 O4 107.0(5)
O1 Cr1 O4 109.0(4)
O8 Cr2 O9 112.5(6)
O8 Cr2 O10 107.9(5)
O9 Cr2 O10 112.0(6)
O8 Cr2 O7 109.3(5)
O9 Cr2 O7 106.4(4)
O10 Cr2 O7 108.6(5)
As1 O4 Cr1 128.1(4)
As1 O5 H 135.1
As1 O7 Cr2 128.3(5)
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_site_symmetry_2
_geom_bond_distance
_geom_bond_publ_flag
As1 O5 . 1.633(7) ?
As1 O6 . 1.685(8) ?
As1 O7 . 1.695(7) ?
As1 O4 . 1.707(7) ?
Cr1 O3 . 1.594(9) ?
Cr1 O2 . 1.602(10) ?
Cr1 O1 . 1.609(9) ?
Cr1 O4 . 1.847(7) ?
Cr2 O8 . 1.599(10) ?
Cr2 O9 . 1.600(9) ?
Cr2 O10 . 1.606(9) ?
Cr2 O7 . 1.842(7) ?
O5 H . 1.28 ?
K1 O1 3_544 2.742(10) ?
K1 O2 . 2.854(11) ?
K1 O3 3_654 2.786(14) ?
K1 O5 . 2.801(10) ?
K1 O7 3_554 3.139(10) ?
K1 O8 1_545 2.724(14) ?
K1 O9 3_554 2.826(11) ?
K1 O10 1_445 2.720(12) ?
K2 O1 3_654 2.828(11) ?
K2 O2 1_665 2.821(11) ?
K2 O3 3_654 3.112(13) ?
K2 O4 . 2.925(10) ?
K2 O6 1_655 2.778(12) ?
K2 O7 . 3.075(10) ?
K2 O8 2_655 3.030(13) ?
K2 O9 1_545 2.760(10) ?
K2 O10 2_655 2.852(9) ?
loop_
_geom_contact_atom_site_label_1
_geom_contact_atom_site_label_2
_geom_contact_distance
_geom_contact_site_symmetry_2
O5 O6 2.550(11) 3_554
