Hexabenzo[4.4.4]propellane: a helical molecular platform for the construction of electroactive materials.
Debroy, Paromita; Lindeman, Sergey V.; Rathore, Rajendra; Organic letters 9 (2007) 4091–4094; doi:10.1021/ol7015466

data_1505516
_publ_section_title
;
 Hexabenzo[4.4.4]propellane: a helical molecular platform for the
 construction of electroactive materials.
;
_journal_issue                   21
_journal_name_full               'Organic letters'
_journal_page_first              4091
_journal_page_last               4094
_journal_paper_doi               10.1021/ol7015466
_journal_volume                  9
_journal_year                    2007
_chemical_formula_sum            'C46 H40'
_chemical_formula_weight         592.78
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 116.6170(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   43.6564(9)
_cell_length_b                   8.5048(2)
_cell_length_c                   20.2741(4)
_cell_measurement_reflns_used    5362
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      61
_cell_measurement_theta_min      2
_cell_volume                     6729.8(3)
_computing_cell_refinement       'SAINT v7.23A (Bruker, 2005)'
_computing_data_collection       'APEX2 v2.0-2 (Bruker, 2005)'
_computing_data_reduction        'SADABS-2004/1 (Bruker, 2005)'
_computing_molecular_graphics    'XP v5.1 (Bruker, 1998)'
_computing_publication_material  'XCIF v6.12 (Bruker, 2001)'
_computing_structure_refinement  'SHELXL-97 v.97-2 (Sheldrick, 1993-1997)'
_computing_structure_solution    'XS/SHELXTL v6.12 (Bruker, 2001)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.965
_diffrn_measured_fraction_theta_max 0.965
_diffrn_measurement_device_type  'Bruker APEX2 CCD detector'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0230
_diffrn_reflns_av_sigmaI/netI    0.0151
_diffrn_reflns_limit_h_max       43
_diffrn_reflns_limit_h_min       -49
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            28039
_diffrn_reflns_theta_full        67.46
_diffrn_reflns_theta_max         61.46
_diffrn_reflns_theta_min         2.26
_exptl_absorpt_coefficient_mu    0.495
_exptl_absorpt_correction_T_max  0.9522
_exptl_absorpt_correction_T_min  0.8459
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.170
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2528
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.235
_refine_diff_density_min         -0.190
_refine_diff_density_rms         0.035
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.990
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     575
_refine_ls_number_reflns         5031
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.990
_refine_ls_R_factor_all          0.0394
_refine_ls_R_factor_gt           0.0339
_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^)+(0.0569P)^2^+3.4090P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0876
_refine_ls_wR_factor_ref         0.0911
_reflns_number_gt                4433
_reflns_number_total             5031
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol7015466-file004.cif
_cod_data_source_block           raj3h
_cod_original_cell_volume        6729.8(2)
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               1505516