Racemic Charge-Transfer Complexes of Helical Polycyclic Aromatic Hydrocarbon Molecule
Yoshida, Yukihiro; Nakamura, Yuto; Kishida, Hideo; Hayama, Hiromi; Nakano, Yoshiaki; Yamochi, Hideki; Saito, Gunzi; CrystEngComm  (2017) –; doi:10.1039/C7CE00763A

data_7228363
_publ_section_title
;
 Racemic Charge-Transfer Complexes of Helical Polycyclic Aromatic
 Hydrocarbon Molecule
;
_journal_name_full               CrystEngComm
_journal_paper_doi               10.1039/C7CE00763A
_journal_year                    2017
_chemical_formula_moiety         '(C26 H16), (C12 H4 N4)'
_chemical_formula_sum            'C38 H20 N4'
_chemical_formula_weight         532.60
_chemical_name_common            ([6]helicene)(TCNQ)
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2017-02-17 deposited with the CCDC.
2017-06-02 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 92.882(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   8.2077(5)
_cell_length_b                   33.7880(19)
_cell_length_c                   19.3173(11)
_cell_measurement_reflns_used    8579
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.97
_cell_measurement_theta_min      2.41
_cell_volume                     5350.3(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-2013 (Sheldrick, 2013)'
_computing_structure_solution    'SHELXS-2013 (Sheldrick, 2013)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 8.333
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0678
_diffrn_reflns_av_sigmaI/netI    0.0606
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       42
_diffrn_reflns_limit_k_min       -42
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            55575
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         1.21
_exptl_absorpt_coefficient_mu    0.079
_exptl_absorpt_correction_T_max  0.9962
_exptl_absorpt_correction_T_min  0.9636
_exptl_absorpt_correction_type   numerical
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.322
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rod
_exptl_crystal_F_000             2208
_exptl_crystal_size_max          0.47
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.209
_refine_diff_density_min         -0.208
_refine_diff_density_rms         0.043
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.975
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     757
_refine_ls_number_reflns         10950
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.975
_refine_ls_R_factor_all          0.0986
_refine_ls_R_factor_gt           0.0482
_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^)+(0.0492P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0906
_refine_ls_wR_factor_ref         0.1045
_reflns_number_gt                6822
_reflns_number_total             10950
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c7ce00763a2.cif
_cod_data_source_block           6helicene-TCNQ
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4973 2017-02-22 13:04:09Z antanas 
;
_cod_original_sg_symbol_H-M      'P2(1)/c  '
_cod_database_code               7228363