Manifestation of helicity in one-dimensional iodobismuthate.
Pandey, Souvik; Andrews, Alex P.; Venugopal, Ajay; Dalton transactions (Cambridge, England : 2003) 45 (2016) 8705–8707; doi:10.1039/c6dt01032f

data_7039178
_publ_section_title
;
 Manifestation of helicity in one-dimensional iodobismuthate.
;
_journal_issue                   21
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              8705
_journal_page_last               8707
_journal_paper_doi               10.1039/c6dt01032f
_journal_volume                  45
_journal_year                    2016
_chemical_formula_moiety         'Bi I4, C12 H20 N '
_chemical_formula_sum            'C12 H20 Bi I4 N'
_chemical_formula_weight         894.87
_chemical_name_systematic
'2,6 diisopropylanilinium tetraiodobismuthate'
_space_group_crystal_system      orthorhombic
_space_group_IT_number           20
_space_group_name_Hall           'C 2c 2'
_space_group_name_H-M_alt        'C 2 2 21'
_symmetry_space_group_name_Hall  'C 2c 2'
_symmetry_space_group_name_H-M   'C 2 2 21'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014
_audit_update_record
;
2016-03-16 deposited with the CCDC.
2016-04-29 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   17.363(2)
_cell_length_b                   24.704(3)
_cell_length_c                   9.8942(10)
_cell_measurement_reflns_used    3021
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      23.51
_cell_measurement_theta_min      2.51
_cell_volume                     4244.0(8)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXL-2014 (Sheldrick, 2014)'
_diffrn_ambient_temperature      296(2)
_diffrn_detector_area_resol_mean 0
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0276
_diffrn_reflns_av_unetI/netI     0.0628
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       -29
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            9045
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.000
_diffrn_reflns_theta_min         2.638
_diffrn_source                   'sealed tube'
_exptl_absorpt_coefficient_mu    14.117
_exptl_absorpt_correction_T_max  0.333
_exptl_absorpt_correction_T_min  0.226
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    2.801
_exptl_crystal_density_meas      2.801
_exptl_crystal_density_method    NONE
_exptl_crystal_description       needle
_exptl_crystal_F_000             3152
_exptl_crystal_size_max          0.150
_exptl_crystal_size_mid          0.100
_exptl_crystal_size_min          0.100
_refine_diff_density_max         1.362
_refine_diff_density_min         -0.564
_refine_diff_density_rms         0.114
_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   0.059(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.873
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     169
_refine_ls_number_reflns         3730
_refine_ls_number_restraints     7
_refine_ls_restrained_S_all      0.872
_refine_ls_R_factor_all          0.0435
_refine_ls_R_factor_gt           0.0280
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details     'w=1/[\s^2^(Fo^2^)] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0557
_refine_ls_wR_factor_ref         0.0606
_reflns_Friedel_coverage         0.784
_reflns_Friedel_fraction_full    0.996
_reflns_Friedel_fraction_max     0.999
_reflns_number_gt                2991
_reflns_number_total             3730
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c6dt01032f2.cif
_cod_data_source_block           1
_cod_depositor_comments
'Adding full bibliography for 7039178--7039181.cif.'
_cod_original_cell_volume        4244.0(9)
_cod_database_code               7039178
_shelx_estimated_absorpt_t_min   0.226
_shelx_estimated_absorpt_t_max   0.333
_shelxl_version_number           2014-3
_shelx_res_checksum              72034