Syntheses and crystal structures of benzohexathia[7]helicene and naphthalene cored double helicene.
Wang, Zhihua; Shi, Jianwu; Wang, Jiange; Li, Chunli; Tian, Xinyong; Cheng, Yanxiang; Wang, Hua; Organic letters 12 (2010) 456–459; doi:10.1021/ol902613g

data_1503371
_publ_section_title
;
 Syntheses and crystal structures of benzohexathia[7]helicene and
 naphthalene cored double helicene.
;
_journal_issue                   3
_journal_name_full               'Organic letters'
_journal_page_first              456
_journal_page_last               459
_journal_paper_doi               10.1021/ol902613g
_journal_volume                  12
_journal_year                    2010
_chemical_formula_sum            'C24 H22 S6 Si2'
_chemical_formula_weight         558.96
_chemical_name_common            compd-1-p
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                74.370(2)
_cell_angle_beta                 89.326(2)
_cell_angle_gamma                69.807(2)
_cell_formula_units_Z            2
_cell_length_a                   8.5149(14)
_cell_length_b                   10.6494(17)
_cell_length_c                   16.510(3)
_cell_measurement_reflns_used    2952
_cell_measurement_temperature    294(2)
_cell_measurement_theta_max      25.64
_cell_measurement_theta_min      2.56
_cell_volume                     1347.6(4)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      294(2)
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  '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  0.0247
_diffrn_reflns_av_sigmaI/netI    0.0376
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            10292
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         2.56
_exptl_absorpt_coefficient_mu    0.609
_exptl_absorpt_correction_T_max  0.9361
_exptl_absorpt_correction_T_min  0.7972
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.377
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             580
_exptl_crystal_size_max          0.39
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.434
_refine_diff_density_min         -0.209
_refine_diff_density_rms         0.059
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.030
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     295
_refine_ls_number_reflns         4969
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.030
_refine_ls_R_factor_all          0.0634
_refine_ls_R_factor_gt           0.0444
_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^)+(0.0589P)^2^+0.4418P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1073
_refine_ls_wR_factor_ref         0.1197
_reflns_number_gt                3688
_reflns_number_total             4969
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol902613g_si_003.cif
_cod_data_source_block           c
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        1347.7(4)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               1503371