Planar Heptathienoacenes Based on Unsymmetric Dithieno[3,2-b:3',4'-d]thiophene: Synthesis and Photophysical Properties.
Liu, Qiuxin; Gao, Xiuxiu; Zhong, Hao; Song, Jinsheng; Wang, Hua; The Journal of organic chemistry 81 (2016) 8612–8616; doi:10.1021/acs.joc.6b01506

data_4037110
_publ_section_title
;
 Planar Heptathienoacenes Based on Unsymmetric
 Dithieno[3,2-b:3',4'-d]thiophene: Synthesis and Photophysical Properties.
;
_journal_issue                   18
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              8612
_journal_page_last               8616
_journal_paper_doi               10.1021/acs.joc.6b01506
_journal_volume                  81
_journal_year                    2016
_chemical_formula_sum            'C28 H36 Cl0 O3 S7 Si4'
_chemical_formula_weight         757.35
_space_group_IT_number           62
_space_group_name_Hall           '-P 2ac 2n'
_space_group_name_H-M_alt        'P n m a'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_H-M   'P n m a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.669(2)
_cell_length_b                   33.953(7)
_cell_length_c                   10.210(2)
_cell_measurement_reflns_used    2714
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      23.42
_cell_measurement_theta_min      2.65
_cell_volume                     4045.2(13)
_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 0.993
_diffrn_measured_fraction_theta_max 0.993
_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  0.0677
_diffrn_reflns_av_sigmaI/netI    0.0467
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       40
_diffrn_reflns_limit_k_min       -39
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -4
_diffrn_reflns_number            19483
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.08
_exptl_absorpt_coefficient_mu    0.535
_exptl_absorpt_correction_T_max  0.9635
_exptl_absorpt_correction_T_min  0.8518
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.244
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1584
_exptl_crystal_size_max          0.31
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.07
_refine_diff_density_max         1.334
_refine_diff_density_min         -0.431
_refine_diff_density_rms         0.104
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.085
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     199
_refine_ls_number_reflns         3597
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.092
_refine_ls_R_factor_all          0.0963
_refine_ls_R_factor_gt           0.0636
_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^)+(0.0500P)^2^+17.9693P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1597
_refine_ls_wR_factor_ref         0.1804
_reflns_number_gt                2469
_reflns_number_total             3597
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo6b01506_si_002.cif
_cod_data_source_block           HT-2
_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
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/ACS/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

data item '_symmetry_cell_setting' value 'Orthorhombic' was changed
to 'orthorhombic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/ACS/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_cell_volume        4045.2(14)
_cod_original_sg_symbol_H-M      'Pnma '
_cod_database_code               4037110