Ln3FeGaQ7: A new series of transition-metal rare-earth chalcogenides
Yin, Wenlong; Wang, Wendong; Kang, Lei; Lin, Zheshuai; Feng, Kai; Shi, Youguo; Hao, Wenyu; Yao, Jiyong; Wu, Yicheng; Journal of Solid State Chemistry 202 (2013) 269–275; doi:10.1016/j.jssc.2013.03.029

data_1562651
_publ_section_title
;
 Ln3FeGaQ7: A new series of transition-metal rare-earth chalcogenides
;
_journal_name_full               'Journal of Solid State Chemistry'
_journal_page_first              269
_journal_page_last               275
_journal_paper_doi               10.1016/j.jssc.2013.03.029
_journal_volume                  202
_journal_year                    2013
_chemical_formula_sum            'Fe Ga Gd3 Se7'
_chemical_formula_weight         1150.04
_space_group_IT_number           173
_space_group_name_Hall           'P 6c'
_space_group_name_H-M_alt        'P 63'
_symmetry_cell_setting           hexagonal
_symmetry_space_group_name_H-M   'P 63'
_atom_sites_solution_hydrogens   .
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            2
_cell_length_a                   10.0762(2)
_cell_length_b                   10.0762(2)
_cell_length_c                   6.4265(2)
_cell_measurement_reflns_used    2063
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      29.0052
_cell_measurement_theta_min      3.1635
_cell_volume                     565.07(2)
_computing_cell_refinement       'CrysAlisPro (Oxford Diffraction Ltd., 2010)'
_computing_data_collection       'CrysAlisPro (Oxford Diffraction Ltd., 2010)'
_computing_data_reduction        'CrysAlisPro (Oxford Diffraction Ltd., 2010)'
_computing_molecular_graphics    'SHELXL-97 (Sheldrick, 2008)'
_computing_publication_material  Diamond
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 15.9149
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Xcalibur, Sapphire3, Gemini ultra'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray Source'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0622
_diffrn_reflns_av_sigmaI/netI    0.0591
_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       8
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            2744
_diffrn_reflns_theta_full        26.36
_diffrn_reflns_theta_max         26.36
_diffrn_reflns_theta_min         3.17
_exptl_absorpt_coefficient_mu    43.450
_exptl_absorpt_correction_T_max  0.162
_exptl_absorpt_correction_T_min  0.051
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'face indexed'
_exptl_crystal_colour            Black
_exptl_crystal_density_diffrn    6.759
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Needle
_exptl_crystal_F_000             974
_exptl_crystal_size_max          0.3050
_exptl_crystal_size_mid          0.0770
_exptl_crystal_size_min          0.0580
_refine_diff_density_max         1.652
_refine_diff_density_min         -1.838
_refine_diff_density_rms         0.412
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.3(2)
_refine_ls_extinction_coef       0.0057(6)
_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   1.236
_refine_ls_hydrogen_treatment    .
_refine_ls_matrix_type           full
_refine_ls_number_parameters     39
_refine_ls_number_reflns         752
_refine_ls_number_restraints     37
_refine_ls_restrained_S_all      1.225
_refine_ls_R_factor_all          0.0394
_refine_ls_R_factor_gt           0.0386
_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^)+(0.0400P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0900
_refine_ls_wR_factor_ref         0.0905
_reflns_number_gt                736
_reflns_number_total             752
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            JSSC-2013-202-269.cif
_cod_data_source_block           Gd3FeGaSe7
_cod_original_sg_symbol_H-M      P63
_cod_database_code               1562651