Three New Quaternary Actinide Chalcogenides Ba2TiUTe7, Ba2CrUTe7, and Ba2CrThTe7: Syntheses, Crystal Structures, Transport Properties, and Theoretical Studies.
Prakash, Jai; Mesbah, Adel; Beard, Jessica; Lebègue, Sébastien; Malliakas, Christos D.; Ibers, James A.; Inorganic chemistry 54 (2015) 3688–3694; doi:10.1021/acs.inorgchem.5b00338

data_4343121
_publ_section_title
;
 Three New Quaternary Actinide Chalcogenides Ba2TiUTe7, Ba2CrUTe7, and
 Ba2CrThTe7: Syntheses, Crystal Structures, Transport Properties, and
 Theoretical Studies.
;
_journal_issue                   7
_journal_name_full               'Inorganic chemistry'
_journal_page_first              3688
_journal_page_last               3694
_journal_paper_doi               10.1021/acs.inorgchem.5b00338
_journal_volume                  54
_journal_year                    2015
_chemical_formula_sum            'Ba2 Cr Te7 U'
_chemical_formula_weight         1457.91
_chemical_name_common            Ba2UCrTe7
_space_group_crystal_system      orthorhombic
_space_group_IT_number           62
_space_group_name_Hall           '-P 2ac 2n'
_space_group_name_H-M_alt        'P n m a'
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014/6
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.4711(3)
_cell_length_b                   6.16530(10)
_cell_length_c                   18.5645(4)
_cell_measurement_reflns_used    8239
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.05
_cell_measurement_theta_min      2.74
_cell_volume                     1427.39(5)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014/6 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0306
_diffrn_reflns_av_unetI/netI     0.0181
_diffrn_reflns_laue_measured_fraction_full 0.996
_diffrn_reflns_laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            18311
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         30.078
_diffrn_reflns_theta_min         3.676
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    31.470
_exptl_absorpt_correction_T_max  0.67528
_exptl_absorpt_correction_T_min  0.17223
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'face indexed (SADABS; Sheldric, 2012/1'
_exptl_crystal_colour            Black
_exptl_crystal_density_diffrn    6.784
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             2368
_exptl_crystal_size_max          0.184
_exptl_crystal_size_mid          0.025
_exptl_crystal_size_min          0.022
_refine_diff_density_max         1.998
_refine_diff_density_min         -2.013
_refine_diff_density_rms         0.271
_refine_ls_extinction_coef       0.000087(19)
_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   1.069
_refine_ls_hydrogen_treatment    undef
_refine_ls_matrix_type           full
_refine_ls_number_parameters     62
_refine_ls_number_reflns         2270
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.069
_refine_ls_R_factor_all          0.0229
_refine_ls_R_factor_gt           0.0187
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0250P)^2^] where P=(1.0000Fo^2^+0.0000Fc^2^)'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0416
_refine_ls_wR_factor_ref         0.0430
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2045
_reflns_number_total             2270
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ic5b00338_si_001.cif
_cod_data_source_block           Ba2CrUTe7
_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 3271 2015-04-21 07:52:19Z andrius 
;
_cod_database_code               4343121
_shelxl_version_number           2014/6
_shelx_res_checksum              5101
_shelx_hkl_checksum              43822