Multinary Selenides with Unusual Coordination Environment of Bismuth
Ming-Yan Chung; Chi-Shen Lee; Inorganic Chemistry 51 (2012) 13328–13333; doi:10.1021/ic302027b

data_4331332
_publ_contact_author_address
;Department of Applied Chemistry, National Chiao Tung University, 
1001 University Rd., Hsinchu 30010, Taiwan.
;
_publ_contact_author_email       chishen@mail.nctu.edu.tw
_publ_contact_author_fax         886-3-5723764
_publ_contact_author_name        'Chi-Shen Lee'
_publ_contact_author_phone       886-3-5712121
_publ_section_title
;
 Multinary Selenides with Unusual Coordination Environment of Bismuth
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              13328
_journal_page_last               13333
_journal_paper_doi               10.1021/ic302027b
_journal_volume                  51
_journal_year                    2012
_chemical_formula_sum            'Bi2.65 Ge0.68 Se8 Sr2.67'
_chemical_formula_weight         1468.77
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_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            12
_cell_length_a                   12.8036(9)
_cell_length_b                   29.016(2)
_cell_length_c                   12.8192(9)
_cell_measurement_reflns_used    3893
_cell_measurement_temperature    273(2)
_cell_measurement_theta_max      25.13
_cell_measurement_theta_min      1.74
_cell_volume                     4762.5(6)
_computing_cell_refinement       'SAINT V7.60A (Bruker AXS)'
_computing_data_collection       APEX2
_computing_data_reduction        'SAINT V7.60A (Bruker AXS)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      273(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  CCD
_diffrn_measurement_method       'profile data from \q/2\q 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  0.0708
_diffrn_reflns_av_sigmaI/netI    0.0547
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       34
_diffrn_reflns_limit_k_min       -34
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            43069
_diffrn_reflns_theta_full        25.13
_diffrn_reflns_theta_max         25.13
_diffrn_reflns_theta_min         1.74
_exptl_absorpt_coefficient_mu    57.753
_exptl_absorpt_correction_T_max  0.099
_exptl_absorpt_correction_T_min  0.078
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    6.145
_exptl_crystal_description       rod
_exptl_crystal_F_000             7382
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.04
_exptl_crystal_size_min          0.04
_refine_diff_density_max         2.002
_refine_diff_density_min         -3.757
_refine_diff_density_rms         0.679
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.36(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.007
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     396
_refine_ls_number_reflns         8477
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.006
_refine_ls_R_factor_all          0.0851
_refine_ls_R_factor_gt           0.0451
_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^)+(0.0667P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1129
_refine_ls_wR_factor_ref         0.1362
_reflns_number_gt                5271
_reflns_number_total             8477
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic302027b_si_002_2.cif
_cod_data_source_block           my642-33
_cod_database_code               4331332