Thiophene-Based Double Helices: Syntheses, X-ray Structures, and Chiroptical Properties.
Zhang, Sheng; Liu, Xinming; Li, Chunli; Li, Lu; Song, Jinsheng; Shi, Jianwu; Morton, Martha; Rajca, Suchada; Rajca, Andrzej; Wang, Hua; Journal of the American Chemical Society 138 (2016) 10002–10010; doi:10.1021/jacs.6b05709

data_4130659
_publ_section_title
;
 Thiophene-Based Double Helices: Syntheses, X-ray Structures, and
 Chiroptical Properties.
;
_journal_issue                   31
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              10002
_journal_page_last               10010
_journal_paper_doi               10.1021/jacs.6b05709
_journal_volume                  138
_journal_year                    2016
_chemical_formula_sum            'C56 H82 O3 S8 Si8'
_chemical_formula_weight         1284.37
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 102.502(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   55.402(9)
_cell_length_b                   18.757(3)
_cell_length_c                   14.450(3)
_cell_measurement_reflns_used    9603
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      25.85
_cell_measurement_theta_min      2.29
_cell_volume                     14660(5)
_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-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w 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  0.0410
_diffrn_reflns_av_sigmaI/netI    0.0513
_diffrn_reflns_limit_h_max       68
_diffrn_reflns_limit_h_min       -59
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            40180
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         1.78
_exptl_absorpt_coefficient_mu    0.411
_exptl_absorpt_correction_T_max  0.9410
_exptl_absorpt_correction_T_min  0.8026
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.158
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             5408
_exptl_crystal_size_max          0.56
_exptl_crystal_size_mid          0.37
_exptl_crystal_size_min          0.15
_refine_diff_density_max         1.136
_refine_diff_density_min         -0.762
_refine_diff_density_rms         0.107
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.057
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     661
_refine_ls_number_reflns         14311
_refine_ls_number_restraints     12
_refine_ls_restrained_S_all      1.061
_refine_ls_R_factor_all          0.1184
_refine_ls_R_factor_gt           0.0888
_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^)+(0.0300P)^2^+190.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2029
_refine_ls_wR_factor_ref         0.2188
_reflns_number_gt                10020
_reflns_number_total             14311
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja6b05709_si_005.cif
_cod_data_source_block           1
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_absorpt_correction_type' value 'Multi-scan' was
changed to 'multi-scan' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/ACS/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/ACS/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_cell_volume        14660(4)
_cod_original_sg_symbol_H-M      'C2/c  '
_cod_database_code               4130659