Synthesis and characterization of uranyl chromate sheet compounds containing edge-sharing dimers of uranyl pentagonal bipyramids
Unruh, Daniel K.; Baranay, Michelle; Pressprich, Laura; Stoffer, Megan; Burns, Peter C.; Journal of Solid State Chemistry 186 (2012) 158–164; doi:10.1016/j.jssc.2011.11.033

data_1563064
_publ_section_title
;
 Synthesis and characterization of uranyl chromate sheet compounds
 containing edge-sharing dimers of uranyl pentagonal bipyramids
;
_journal_name_full               'Journal of Solid State Chemistry'
_journal_page_first              158
_journal_page_last               164
_journal_paper_doi               10.1016/j.jssc.2011.11.033
_journal_volume                  186
_journal_year                    2012
_chemical_formula_sum            'Cr2 Mg O23 U2'
_chemical_formula_weight         972.37
_space_group_IT_number           63
_space_group_name_Hall           '-C 2c 2'
_space_group_name_H-M_alt        'C m c m'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_H-M   'C m c m'
_atom_sites_solution_hydrogens   none
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.1695(16)
_cell_length_b                   19.018(4)
_cell_length_c                   16.588(4)
_cell_measurement_reflns_used    2451
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      26.45
_cell_measurement_theta_min      2.46
_cell_volume                     2261.8(9)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'CrystalMaker v8.2.3'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0799
_diffrn_reflns_av_sigmaI/netI    0.0408
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            16972
_diffrn_reflns_theta_full        29.14
_diffrn_reflns_theta_max         29.14
_diffrn_reflns_theta_min         2.46
_exptl_absorpt_coefficient_mu    15.329
_exptl_absorpt_correction_T_max  0.9273
_exptl_absorpt_correction_T_min  0.2503
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    2.856
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1712
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.01
_refine_diff_density_max         3.634
_refine_diff_density_min         -1.740
_refine_diff_density_rms         0.331
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.078
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     81
_refine_ls_number_reflns         1683
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.078
_refine_ls_R_factor_all          0.0432
_refine_ls_R_factor_gt           0.0357
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0569P)^2^+57.8295P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1033
_refine_ls_wR_factor_ref         0.1077
_reflns_number_gt                1449
_reflns_number_total             1683
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            JSSC-2012-186-158.cif
_cod_data_source_block           cmcm
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Orthorhombic' was changed
to 'orthorhombic' in accordance with the built-in table derived from
the CIF Core dictionary named 'cif_core.dic' version 2.4.5 last
updated on 2014-11-21.

Automatic conversion script
Id: cif_fix_values 8369 2020-08-20 11:38:08Z andrius 
;
_cod_original_cell_volume        2261.7(9)
_cod_original_sg_symbol_H-M      Cmcm
_cod_database_code               1563064