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_7227665
_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            'C22 H26'
_chemical_formula_weight         290.43
_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
;
2015-09-18 deposited with the CCDC.
2017-01-18 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 96.915(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.731(4)
_cell_length_b                   10.216(4)
_cell_length_c                   15.667(6)
_cell_measurement_reflns_used    1831
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      21.94
_cell_measurement_theta_min      2.39
_cell_volume                     1863.9(12)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0387
_diffrn_reflns_av_sigmaI/netI    0.0447
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            9206
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.65
_exptl_absorpt_coefficient_mu    0.058
_exptl_absorpt_correction_T_max  0.9863
_exptl_absorpt_correction_T_min  0.9817
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.035
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             632
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.486
_refine_diff_density_min         -0.290
_refine_diff_density_rms         0.047
_refine_ls_extinction_coef       0.0084(15)
_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   1.013
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     200
_refine_ls_number_reflns         3272
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.121
_refine_ls_R_factor_all          0.1394
_refine_ls_R_factor_gt           0.0967
_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^)+(0.0100P)^2^+2.6000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1832
_refine_ls_wR_factor_ref         0.1951
_reflns_number_gt                1865
_reflns_number_total             3272
_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 'Monoclinic' changed to 'monoclinic'
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      'P21/c   '
_cod_database_code               7227665