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_7104682
_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 Ba0.5 Fe2 K0.4 Sn0.1'
_chemical_formula_weight         357.72
_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                   3.9021(5)
_cell_length_b                   3.9021(5)
_cell_length_c                   13.3538(17)
_cell_measurement_reflns_used    99
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      28.49
_cell_measurement_theta_min      3.05
_cell_volume                     203.33(5)
_computing_cell_refinement       'Bruker APEX CCD area detector'
_computing_data_collection       'Bruker APEX CCD area detector'
_computing_data_reduction        'Bruker APEX CCD area detector'
_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 0.943
_diffrn_measured_fraction_theta_max 0.943
_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  0.0426
_diffrn_reflns_av_sigmaI/netI    0.0347
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       3
_diffrn_reflns_limit_k_min       -4
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            547
_diffrn_reflns_theta_full        28.49
_diffrn_reflns_theta_max         28.49
_diffrn_reflns_theta_min         3.05
_exptl_absorpt_coefficient_mu    28.797
_exptl_absorpt_correction_T_max  0.866
_exptl_absorpt_correction_T_min  0.715
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'via SADABS (Bruker, 2000)'
_exptl_crystal_colour            silver
_exptl_crystal_density_diffrn    5.821
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             317
_exptl_crystal_size_max          0.02
_exptl_crystal_size_mid          0.01
_exptl_crystal_size_min          0.005
_refine_diff_density_max         1.865
_refine_diff_density_min         -1.745
_refine_diff_density_rms         0.375
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.130
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     12
_refine_ls_number_reflns         99
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.124
_refine_ls_R_factor_all          0.0380
_refine_ls_R_factor_gt           0.0378
_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^)+(0.0664P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0908
_refine_ls_wR_factor_ref         0.0910
_reflns_number_gt                96
_reflns_number_total             99
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b910749e.txt
_cod_data_source_block           'data_0m2'
_cod_original_sg_symbol_H-M      I4/mmm
_cod_original_formula_sum        'As2 Ba0.50 Fe2 K0.40 Sn0.10'
_cod_database_code               7104682