Syntheses, Crystal and Electronic Structures, and Physical Properties of Quaternary Semiconductors: Ln2Mn3Sb4S12 (Ln = Pr, Nd, Sm, Gd)
Hua-Jun Zhao; Long-Hua Li; Li-Ming Wu; Ling Chen; Inorganic Chemistry 49 (2010) 5811–5817; doi:10.1021/ic9025206

data_4316010
_publ_section_title
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 Syntheses, Crystal and Electronic Structures, and Physical Properties of
 Quaternary Semiconductors: Ln2Mn3Sb4S12 (Ln = Pr, Nd, Sm, Gd)
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_journal_name_full               'Inorganic Chemistry'
_journal_page_first              5811
_journal_page_last               5817
_journal_paper_doi               10.1021/ic9025206
_journal_volume                  49
_journal_year                    2010
_chemical_formula_sum            'Gd2 Mn3 S12 Sb4'
_chemical_formula_weight         1351.04
_chemical_name_systematic
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 ? 
;
_space_group_IT_number           12
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2y'
_symmetry_space_group_name_H-M   'C 1 2/m 1'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 126.702(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   19.9672(6)
_cell_length_b                   3.8803(2)
_cell_length_c                   14.90100(10)
_cell_measurement_reflns_used    1500
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.7
_cell_measurement_theta_min      1.65
_cell_volume                     925.63(6)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_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      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_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  0.0403
_diffrn_reflns_av_sigmaI/netI    0.0363
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       4
_diffrn_reflns_limit_k_min       -4
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            2620
_diffrn_reflns_theta_full        25.70
_diffrn_reflns_theta_max         25.70
_diffrn_reflns_theta_min         1.70
_exptl_absorpt_coefficient_mu    16.102
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.449
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            Black
_exptl_crystal_density_diffrn    4.847
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             1198
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.05
_refine_diff_density_max         4.419
_refine_diff_density_min         -3.007
_refine_diff_density_rms         0.408
_refine_ls_extinction_coef       0.0022(2)
_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   1.064
_refine_ls_matrix_type           full
_refine_ls_number_parameters     66
_refine_ls_number_reflns         1021
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.064
_refine_ls_R_factor_all          0.0557
_refine_ls_R_factor_gt           0.0456
_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 w=1/[\s^2^(Fo^2^)+(0.0416P)^2^+104.4331P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1075
_refine_ls_wR_factor_ref         0.1152
_reflns_number_gt                895
_reflns_number_total             1021
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic9025206_si_001_3.cif
_cod_data_source_block           Gd2Mn3Sb4S12
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
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_cod_database_code               4316010