Intramolecular oxidative cyclodehydrogenation route for the synthesis of strap-like conjugated polymers
Yang, Junwei; Huang, Wei; Lin, Tingting; Pan, Xiaoyong; Zhu, Haoyun; Huang, Yuli; Wang, Weizhi; RSC Adv. 7 (2017) 10763–; doi:10.1039/C6RA25214A

data_7227666
_publ_section_title
;
 Intramolecular oxidative cyclodehydrogenation route for the synthesis of
 strap-like conjugated polymers
;
_journal_issue                   18
_journal_name_full               'RSC Adv.'
_journal_page_first              10763
_journal_paper_doi               10.1039/C6RA25214A
_journal_volume                  7
_journal_year                    2017
_chemical_formula_sum            'C34 H50 B2 O4'
_chemical_formula_weight         544.36
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2015-09-18 deposited with the CCDC.
2017-01-18 downloaded from the CCDC.
;
_cell_angle_alpha                108.83(5)
_cell_angle_beta                 103.58(5)
_cell_angle_gamma                104.77(3)
_cell_formula_units_Z            2
_cell_length_a                   10.991(18)
_cell_length_b                   12.54(2)
_cell_length_c                   13.97(4)
_cell_measurement_reflns_used    939
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      20.16
_cell_measurement_theta_min      2.72
_cell_volume                     1653(6)
_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, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.978
_diffrn_measured_fraction_theta_max 0.978
_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  0.0933
_diffrn_reflns_av_sigmaI/netI    0.1105
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            8152
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         1.64
_exptl_absorpt_coefficient_mu    0.068
_exptl_absorpt_correction_T_max  0.9878
_exptl_absorpt_correction_T_min  0.9824
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.094
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             592
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.436
_refine_diff_density_min         -0.302
_refine_diff_density_rms         0.066
_refine_ls_extinction_coef       0.004(2)
_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   1.196
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     362
_refine_ls_number_reflns         5701
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.196
_refine_ls_R_factor_all          0.1805
_refine_ls_R_factor_gt           0.1322
_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^)+(0.0024P)^2^+0.0800P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2363
_refine_ls_wR_factor_ref         0.2686
_reflns_number_gt                1866
_reflns_number_total             5701
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c6ra25214a2.cif
_cod_data_source_block           a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to
/usr/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.

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' according to
/usr/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 4268 2015-11-12 08:31:59Z antanas 
;
_cod_original_sg_symbol_H-M      'P-1   '
_cod_database_code               7227666