Selective Se-for-S substitution in Cs-bearing uranyl compounds
Gurzhiy, Vladislav V.; Tyumentseva, Olga S.; Krivovichev, Sergey V.; Tananaev, Ivan G.; Journal of Solid State Chemistry 248 (2017) 126–133; doi:10.1016/j.jssc.2017.02.005

data_1560590
_publ_section_title
;
 Selective Se-for-S substitution in Cs-bearing uranyl compounds
;
_journal_name_full               'Journal of Solid State Chemistry'
_journal_page_first              126
_journal_page_last               133
_journal_paper_doi               10.1016/j.jssc.2017.02.005
_journal_volume                  248
_journal_year                    2017
_chemical_formula_moiety         '0.5(Cs4 O32 S1.91 Se4.09 U4)'
_chemical_formula_sum            'Cs2 O16 S0.96 Se2.05 U2'
_chemical_formula_weight         1189.97
_space_group_crystal_system      tetragonal
_space_group_IT_number           113
_space_group_name_Hall           'P -4 2ab'
_space_group_name_H-M_alt        'P -4 21 m'
_atom_sites_solution_hydrogens   .
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   9.7828(14)
_cell_length_b                   9.7828(14)
_cell_length_c                   8.1537(16)
_cell_measurement_reflns_used    2757
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      31.64
_cell_measurement_theta_min      3.24
_cell_volume                     780.3(2)
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0552
_diffrn_reflns_av_unetI/netI     0.0358
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.991
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            5048
_diffrn_reflns_point_group_measured_fraction_full 0.991
_diffrn_reflns_point_group_measured_fraction_max 0.986
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.487
_diffrn_reflns_theta_min         2.945
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    30.299
_exptl_absorpt_correction_T_max  0.8453
_exptl_absorpt_correction_T_min  0.2650
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS; Bruker, 2007'
_exptl_crystal_colour            yellow-green
_exptl_crystal_density_diffrn    5.064
_exptl_crystal_density_meas      .
_exptl_crystal_description       lamina
_exptl_crystal_F_000             1014
_exptl_crystal_size_max          0.13
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.01
_refine_diff_density_max         0.810
_refine_diff_density_min         -0.717
_refine_diff_density_rms         0.178
_refine_ls_abs_structure_details
;
 Flack x determined using 349 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons and Flack (2004), Acta Cryst. A60, s61).
;
_refine_ls_abs_structure_Flack   0.015(9)
_refine_ls_extinction_coef       .
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.038
_refine_ls_hydrogen_treatment    undef
_refine_ls_matrix_type           full
_refine_ls_number_parameters     65
_refine_ls_number_reflns         964
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.0252
_refine_ls_R_factor_gt           0.0222
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0205P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0443
_refine_ls_wR_factor_ref         0.0448
_reflns_Friedel_coverage         0.691
_reflns_Friedel_fraction_full    0.984
_reflns_Friedel_fraction_max     0.978
_reflns_number_gt                907
_reflns_number_total             964
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            JSSC-2018-248-126.cif
_cod_data_source_block           Compound_7_3csno3_tpnew
_cod_original_cell_volume        780.3(3)
_cod_database_code               1560590
_olex2_refinement_description
;
1. Shared sites
{Se1, S1}
{Se2, S2}
2. Uiso/Uaniso restraints and constraints
Uanis(Se1) = Uanis(S1)
Uanis(Se2) = Uanis(S2)
3. Others
 Sof(S1)=0.5*(1-FVAR(2))
 Sof(Se1)=0.5*FVAR(2)
 Sof(S2)=0.25*(1-FVAR(3))
 Sof(Se2)=0.25*FVAR(3)
;