Rare-Earth Metal Substitutions in Ca9‒xRExMn4Sb9 (RE = La‒Nd, Sm; x ≈ 1). Synthesis and Characterization of a New Series of Narrow-Gap Semiconductors
Wang, Yi; Bobev, Svilen; Chemistry of Materials 30 (2018) 3518–; doi:10.1021/acs.chemmater.8b01316

data_4003092
_publ_section_title
;
 Rare-Earth Metal Substitutions in Ca9--xRExMn4Sb9 (RE = La--Nd, Sm; x
 &#x2248; 1). Synthesis and Characterization of a New Series of Narrow-Gap
 Semiconductors
;
_journal_issue                   10
_journal_name_full               'Chemistry of Materials'
_journal_page_first              3518
_journal_paper_doi               10.1021/acs.chemmater.8b01316
_journal_volume                  30
_journal_year                    2018
_chemical_formula_sum            'Ca8.16 Ce0.84 Mn4 Sb9'
_chemical_formula_weight         1759.76
_space_group_IT_number           55
_space_group_name_Hall           '-P 2 2ab'
_space_group_name_H-M_alt        'P b a m'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2 2ab'
_symmetry_space_group_name_H-M   'P b a m'
_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                   12.4347(6)
_cell_length_b                   22.0664(10)
_cell_length_c                   4.6189(2)
_cell_measurement_reflns_used    3669
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      30.31
_cell_measurement_theta_min      2.47
_cell_volume                     1267.38(10)
_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-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w 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  0.0412
_diffrn_reflns_av_sigmaI/netI    0.0203
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       27
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       5
_diffrn_reflns_limit_l_min       -5
_diffrn_reflns_number            12851
_diffrn_reflns_theta_full        26.35
_diffrn_reflns_theta_max         26.35
_diffrn_reflns_theta_min         1.85
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    14.433
_exptl_absorpt_correction_T_max  0.6172
_exptl_absorpt_correction_T_min  0.3502
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    4.611
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1541
_exptl_crystal_size_max          0.09
_exptl_crystal_size_mid          0.09
_exptl_crystal_size_min          0.04
_refine_diff_density_max         2.271
_refine_diff_density_min         -1.206
_refine_diff_density_rms         0.200
_refine_ls_extinction_coef       0.00068(5)
_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   1.102
_refine_ls_matrix_type           full
_refine_ls_number_parameters     77
_refine_ls_number_reflns         1460
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.102
_refine_ls_R_factor_all          0.0245
_refine_ls_R_factor_gt           0.0205
_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^)+(0.0185P)^2^+5.0055P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0458
_refine_ls_wR_factor_ref         0.0473
_reflns_number_gt                1298
_reflns_number_total             1460
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cm8b01316_si_002.cif
_cod_data_source_block           Ce
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Orthorhombic' was changed
to 'orthorhombic' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/current/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      Pbam
_cod_database_code               4003092