A boron-doped helicene as a highly soluble, benchtop-stable green emitter
Schickedanz, Kai; Trageser, Timo; Bolte, Michael; Lerner, Hans-Wolfram; Wagner, Matthias; Chemical Communications (Cambridge, United Kingdom) 51 (2015) 15808–15810; doi:10.1039/c5cc07208e

data_7118000
_publ_section_title
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 A boron-doped helicene as a highly soluble, benchtop-stable green emitter
;
_journal_coden_ASTM              CHCOFS
_journal_issue                   87
_journal_name_full
;
 Chemical Communications (Cambridge, United Kingdom)
;
_journal_page_first              15808
_journal_page_last               15810
_journal_paper_doi               10.1039/c5cc07208e
_journal_volume                  51
_journal_year                    2015
_chemical_formula_moiety         'C26 H15 B Br4'
_chemical_formula_sum            'C26 H15 B Br4'
_chemical_formula_weight         657.83
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/6
_cell_angle_alpha                90
_cell_angle_beta                 94.908(6)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.6333(9)
_cell_length_b                   14.6789(7)
_cell_length_c                   12.1639(8)
_cell_measurement_reflns_used    26415
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      29.87
_cell_measurement_theta_min      3.37
_cell_volume                     2247.4(2)
_computing_cell_refinement       'X-Area (Stoe & Cie, 2001)'
_computing_data_collection       'X-Area (Stoe & Cie, 2001)'
_computing_data_reduction        'X-Area (Stoe & Cie, 2001)'
_computing_molecular_graphics    'XP in SHELXTL-Plus (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-2014/6 (Sheldrick, 2014)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'STOE IPDS II two-circle-diffractometer'
_diffrn_measurement_method       \w
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0759
_diffrn_reflns_av_unetI/netI     0.0443
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            29288
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.000
_diffrn_reflns_theta_max         26.369
_diffrn_reflns_theta_min         3.213
_exptl_absorpt_coefficient_mu    7.175
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.603
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'X-Area (Stoe & Cie, 2001)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.944
_exptl_crystal_description       plate
_exptl_crystal_F_000             1264
_exptl_crystal_size_max          0.190
_exptl_crystal_size_mid          0.170
_exptl_crystal_size_min          0.070
_refine_diff_density_max         1.081
_refine_diff_density_min         -0.531
_refine_diff_density_rms         0.123
_refine_ls_extinction_coef       .
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.099
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     280
_refine_ls_number_reflns         4584
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.099
_refine_ls_R_factor_all          0.0611
_refine_ls_R_factor_gt           0.0457
_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^)+(0.0525P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0918
_refine_ls_wR_factor_ref         0.0971
_reflns_Friedel_coverage         0.000
_reflns_Friedel_fraction_full    .
_reflns_Friedel_fraction_max     .
_reflns_number_gt                3822
_reflns_number_total             4584
_reflns_threshold_expression     'I > 2\s(I)'
_cod_duplicate_entry             7117996
_cod_data_source_file            c5cc07208e2-3.cif
_cod_data_source_block           wa2129_a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_space_group_crystal_system' value 'monoclinic ' changed to
'monoclinic' according to the built-in table from CIF Core dictionary
named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 4093 2015-10-18 17:28:56Z antanas 
;
_cod_database_code               7118000
_shelx_estimated_absorpt_t_min   0.343
_shelx_estimated_absorpt_t_max   0.634
_shelxl_version_number           2014/6
_shelx_res_checksum              20193
_shelx_hkl_checksum              29463