A two-dimensional conjugated aromatic polymer via C-C coupling reaction
Wei Liu; Xin Luo; Yang Bao; Yan Peng Liu; Guo-Hong Ning; Ibrahim Abdelwahab; Linjun Li; Chang Tai Nai; Zhi Gang Hu; Dan Zhao; Bin Liu; Su Ying Quek; Kian Ping Loh; Nature Chemistry 9 (2017) 563–570; doi:10.1038/nchem.2696

data_1552051
_publ_section_title
;
 A two-dimensional conjugated aromatic polymer via C-C coupling reaction
;
_journal_name_full               'Nature Chemistry'
_journal_page_first              563
_journal_page_last               570
_journal_paper_doi               10.1038/nchem.2696
_journal_volume                  9
_journal_year                    2017
_chemical_formula_sum            'C34 H14 Br4 N4'
_chemical_formula_weight         798.13
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_cell_angle_alpha                90
_cell_angle_beta                 99.857(5)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   11.2408(10)
_cell_length_b                   4.6467(4)
_cell_length_c                   25.9293(19)
_cell_measurement_reflns_used    6517
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      68.29
_cell_measurement_theta_min      3.46
_cell_volume                     1334.36(19)
_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-2014/6 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.983
_diffrn_measurement_device_type  'Bruker D8 Venture'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0343
_diffrn_reflns_av_unetI/netI     0.0370
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.983
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            8157
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.983
_diffrn_reflns_theta_full        66.500
_diffrn_reflns_theta_max         66.580
_diffrn_reflns_theta_min         3.460
_diffrn_source                   'Sealed Microfocusing Source'
_exptl_absorpt_coefficient_mu    7.638
_exptl_absorpt_correction_T_max  0.9694
_exptl_absorpt_correction_T_min  0.3137
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details   'Sadabs, (Sheldrick 2012)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.986
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'Not Measured'
_exptl_crystal_description       Needle
_exptl_crystal_F_000             772
_exptl_crystal_size_max          0.400
_exptl_crystal_size_mid          0.031
_exptl_crystal_size_min          0.023
_refine_diff_density_max         0.944
_refine_diff_density_min         -0.631
_refine_diff_density_rms         0.179
_refine_ls_extinction_coef       .
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.162
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     191
_refine_ls_number_reflns         2373
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.162
_refine_ls_R_factor_all          0.0532
_refine_ls_R_factor_gt           0.0501
_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^)+18.9752P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1220
_refine_ls_wR_factor_ref         0.1253
_reflns_Friedel_coverage         0.000
_reflns_Friedel_fraction_full    .
_reflns_Friedel_fraction_max     .
_reflns_number_gt                2231
_reflns_number_total             2373
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            nchem.2696-s2.cif
_cod_data_source_block           f218
_cod_depositor_comments
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The following automatic conversions were performed:

data item '_exptl_absorpt_correction_type' value 'Integration' was
changed to 'integration' in accordance with the built-in table
derived from the CIF Core dictionary named 'cif_core.dic' version
2.4.5 last updated on 2014-11-21.

data item '_exptl_crystal_density_meas' value 'Not Measured' was
changed to '?' -- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               1552051
_shelx_estimated_absorpt_t_min   0.150
_shelx_estimated_absorpt_t_max   0.844
_shelxl_version_number           2014/6
_shelx_res_checksum              96255
_shelx_hkl_checksum              18083