Solid-state syntheses and single-crystal characterizations of three tetravalent thorium and uranium silicates
Jin, Geng Bang; Soderholm, L.; Journal of Solid State Chemistry 221 (2015) 405–410; doi:10.1016/j.jssc.2014.10.018

data_1562164
_publ_section_title
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 Solid-state syntheses and single-crystal characterizations of three
 tetravalent thorium and uranium silicates
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_journal_name_full               'Journal of Solid State Chemistry'
_journal_page_first              405
_journal_page_last               410
_journal_paper_doi               10.1016/j.jssc.2014.10.018
_journal_volume                  221
_journal_year                    2015
_chemical_formula_moiety         '(Ca0.5 Na0.5)2 Na U Si8 O20'
_chemical_formula_sum            'Ca Na2 O20 Si8 U'
_chemical_formula_weight         868.81
_chemical_name_common            'Calcium sodium uranium silicate'
_space_group_IT_number           124
_space_group_name_Hall           '-P 4 2c'
_space_group_name_H-M_alt        'P 4/m c c'
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_H-M   'P 4/m c c'
_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            2
_cell_length_a                   7.4379(16)
_cell_length_b                   7.4379(16)
_cell_length_c                   14.888(3)
_cell_measurement_reflns_used    2313
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      29.74
_cell_measurement_theta_min      4.75
_cell_volume                     823.6(3)
_computing_cell_refinement       'Bruker APEX2'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'CrystalMaker for Windows ver. 2.5.2 (2011)'
_computing_publication_material  'SHELXTL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '0.3 wide w/ exposures'
_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  0.0635
_diffrn_reflns_av_sigmaI/netI    0.0225
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            11179
_diffrn_reflns_theta_full        31.10
_diffrn_reflns_theta_max         31.10
_diffrn_reflns_theta_min         4.75
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    10.915
_exptl_absorpt_correction_T_max  0.804
_exptl_absorpt_correction_T_min  0.583
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    3.503
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'irregular prism'
_exptl_crystal_F_000             812
_exptl_crystal_size_max          0.065
_exptl_crystal_size_mid          0.042
_exptl_crystal_size_min          0.020
_refine_diff_density_max         1.800
_refine_diff_density_min         -1.040
_refine_diff_density_rms         0.237
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.267
_refine_ls_matrix_type           full
_refine_ls_number_parameters     41
_refine_ls_number_reflns         692
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.267
_refine_ls_R_factor_all          0.0388
_refine_ls_R_factor_gt           0.0292
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
; calc 
 [1.00000+0.00000exp(0.00(sin\q/\l)^2^)]/ 
   [\s^2^(Fo^2^)+0.0000+0.0000*P+(0.0450P)^2^+0.0000sin\q/\l] 
 where P = 1.00000Fo^2^ + 0.00000Fc^2^ 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0727
_refine_ls_wR_factor_ref         0.0793
_reflns_number_gt                567
_reflns_number_total             692
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            JSSC-2015-221-405.cif
_cod_data_source_block           compound3
_cod_depositor_comments
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The following automatic conversions were performed:

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

Automatic conversion script
Id: cif_fix_values 8369 2020-08-20 11:38:08Z andrius 
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_cod_original_cell_volume        823.7(3)
_cod_database_code               1562164