Zintl phase as dopant source in the flux synthesis of Ba(1-x)K(x)Fe(2)As(2) type superconductors.
Mathieu, Josiah L; Latturner, Susan E; Chemical communications (Cambridge, England) 34 (2009) 4965–4967; doi:10.1039/b910749e

data_7104686
_publ_section_title
;
 Zintl phase as dopant source in the flux synthesis of
 Ba(1-x)K(x)Fe(2)As(2) type superconductors.
;
_journal_issue                   33
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              4965
_journal_page_last               4967
_journal_paper_doi               10.1039/b910749e
_journal_volume                  34
_journal_year                    2009
_chemical_formula_sum            'As2 Ba0.9 Fe2 Sn0.1'
_chemical_formula_weight         397.01
_chemical_name_systematic
;
?
;
_space_group_IT_number           139
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  '-I 4 2'
_symmetry_space_group_name_H-M   'I 4/m m m'
_atom_sites_solution_hydrogens   none
_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                   3.9297(8)
_cell_length_b                   3.9297(8)
_cell_length_c                   13.158(3)
_cell_measurement_reflns_used    137
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      32.75
_cell_measurement_theta_min      3.10
_cell_volume                     203.20(7)
_computing_cell_refinement       'Bruker APEX2'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker APEX2'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.958
_diffrn_measured_fraction_theta_max 0.958
_diffrn_measurement_device_type  'Bruker APEX 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  0.0246
_diffrn_reflns_av_sigmaI/netI    0.0141
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            1298
_diffrn_reflns_theta_full        32.75
_diffrn_reflns_theta_max         32.75
_diffrn_reflns_theta_min         3.10
_exptl_absorpt_coefficient_mu    32.201
_exptl_absorpt_correction_T_max  0.851
_exptl_absorpt_correction_T_min  0.686
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'via SADABS (Bruker, 2000)'
_exptl_crystal_colour            silver
_exptl_crystal_density_diffrn    6.489
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             347
_exptl_crystal_size_max          0.03
_exptl_crystal_size_mid          0.01
_exptl_crystal_size_min          0.005
_refine_diff_density_max         3.068
_refine_diff_density_min         -2.606
_refine_diff_density_rms         0.491
_refine_ls_extinction_coef       0.009(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   1.198
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     11
_refine_ls_number_reflns         137
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.198
_refine_ls_R_factor_all          0.0295
_refine_ls_R_factor_gt           0.0287
_refine_ls_shift/su_max          0.068
_refine_ls_shift/su_mean         0.012
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0406P)^2^+3.0655P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0725
_refine_ls_wR_factor_ref         0.0729
_reflns_number_gt                130
_reflns_number_total             137
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b910749e.txt
_cod_data_source_block           'data_0m5'
_cod_original_sg_symbol_H-M      I4/mmm
_cod_original_formula_sum        'As2 Ba0.90 Fe2 Sn0.10'
_cod_database_code               7104686