Syntheses, Structures, Magnetic Properties, and X-ray Absorption Spectra of Carnotite-type Uranyl Chromium(V) Oxides: A[(UO2)2Cr2O8](H2O)n(A = K2, Rb2, Cs2, Mg;n= 0, 4)
Locock, A. J.; Skanthakumar, S.; Burns, P. C.; Soderholm, L.; Chemistry of Materials 16 (2004) 1384–; doi:10.1021/cm030639c

data_4001605
_publ_section_title
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 Syntheses, Structures, Magnetic Properties, and X-ray Absorption Spectra
 of Carnotite-type Uranyl Chromium(V) Oxides:&#x00A0;
 A[(UO2)2Cr2O8](H2O)n(A = K2, Rb2, Cs2, Mg;n= 0, 4)
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_journal_issue                   7
_journal_name_full               'Chemistry of Materials'
_journal_page_first              1384
_journal_paper_doi               10.1021/cm030639c
_journal_volume                  16
_journal_year                    2004
_chemical_formula_moiety         'Cr2 K2 O12 U2'
_chemical_formula_sum            'Cr2 K2 O12 U2'
_chemical_formula_weight         850.26
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_audit_creation_date             2003-07-08T15:12:08-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 105.040(3)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   6.5483(8)
_cell_length_b                   8.3548(10)
_cell_length_c                   10.4200(13)
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      34.52
_cell_measurement_theta_min      3.17
_cell_volume                     550.55(12)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_measured_fraction_theta_full 0.981
_diffrn_measured_fraction_theta_max 0.981
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_wavelength_id  MoK\a
_diffrn_reflns_av_R_equivalents  0.0393
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            10988
_diffrn_reflns_theta_full        34.52
_diffrn_reflns_theta_max         34.52
_diffrn_reflns_theta_min         3.17
_exptl_absorpt_coefficient_mu    32.059
_exptl_absorpt_correction_T_max  0.277
_exptl_absorpt_correction_T_min  0.057
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'Bruker SADABS'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    5.129
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             732
_exptl_crystal_id                KUCrO6
_exptl_crystal_size_max          0.100
_exptl_crystal_size_mid          0.100
_exptl_crystal_size_min          0.04
_refine_diff_density_max         3.091
_refine_diff_density_min         -1.332
_refine_ls_extinction_coef       0.00185(13)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.042
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     83
_refine_ls_number_reflns         2296
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.042
_refine_ls_R_factor_gt           0.0199
_refine_ls_shift/su_max          0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0164P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.0426
_reflns_number_gt                2056
_reflns_number_total             2296
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cm030639c_s.cif
_cod_data_source_block           (1)
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
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 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               4001605