Ladder-type conjugated oligomers prepared by the Scholl oxidative cyclodehydrogenation reaction: synthesis, characterization and application in field effect transistors
Wei Huang; Hejian Zhang; Ji Ma; Moyun Chen; Haoyun Zhu; Weizhi Wang; Journal of Materials Chemistry C 3 (2015) 6200–6208; doi:10.1039/C5TC00354G

data_7234283
_publ_section_title
;
 Ladder-type conjugated oligomers prepared by the Scholl oxidative
 cyclodehydrogenation reaction: synthesis, characterization and
 application in field effect transistors
;
_journal_name_full               'Journal of Materials Chemistry C'
_journal_page_first              6200
_journal_page_last               6208
_journal_paper_doi               10.1039/C5TC00354G
_journal_volume                  3
_journal_year                    2015
_chemical_formula_sum            'C26 H34 B2 O4'
_chemical_formula_weight         432.15
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_cell_setting           monoclinic
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 90.019(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.526(5)
_cell_length_b                   6.539(5)
_cell_length_c                   25.120(5)
_cell_measurement_reflns_used    2360
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      21.69
_cell_measurement_theta_min      3.08
_cell_volume                     2550(2)
_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-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.971
_diffrn_measured_fraction_theta_max 0.971
_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  0.0567
_diffrn_reflns_av_sigmaI/netI    0.0806
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            11668
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.31
_exptl_absorpt_coefficient_mu    0.073
_exptl_absorpt_correction_T_max  0.9913
_exptl_absorpt_correction_T_min  0.9835
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.126
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             928
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.405
_refine_diff_density_min         -0.308
_refine_diff_density_rms         0.054
_refine_ls_extinction_coef       0.0091(13)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.037
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     290
_refine_ls_number_reflns         4347
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.037
_refine_ls_R_factor_all          0.1632
_refine_ls_R_factor_gt           0.1206
_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^)+(0.0040P)^2^+7.7000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2428
_refine_ls_wR_factor_ref         0.2586
_reflns_number_gt                2695
_reflns_number_total             4347
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            J-mater-Chem-C-2015-3-6200.cif
_cod_data_source_block           b
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_absorpt_correction_type' value 'Multi-scan' was
changed to 'multi-scan' 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 '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' 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.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      'P2(1)/c  '
_cod_database_code               7234283