Antiaromatic bisindeno-[n]thienoacenes with small singlet biradical characters: syntheses, structures and chain length dependent physical properties
Shi, Xueliang; Burrezo, Paula Mayorga; Lee, Sangsu; Zhang, Wenhua; Zheng, Bin; Dai, Gaole; Chang, Jingjing; López Navarrete, Juan T.; Huang, Kuo-Wei; Kim, Dongho; Casado, Juan; Chi, Chunyan; Chem. Sci. 5 (2014) 4490–; doi:10.1039/C4SC01769B

data_1517100
_publ_section_title
;
 Antiaromatic bisindeno-[n]thienoacenes with small singlet biradical
 characters: syntheses, structures and chain length dependent physical
 properties
;
_journal_issue                   11
_journal_name_full               'Chem. Sci.'
_journal_page_first              4490
_journal_paper_doi               10.1039/C4SC01769B
_journal_volume                  5
_journal_year                    2014
_chemical_formula_moiety         'C42 H50 S2 Si2'
_chemical_formula_sum            'C42 H50 S2 Si2'
_chemical_formula_weight         675.12
_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
;
2012-12-19 # Formatted by publCIF
;
_cell_angle_alpha                73.693(15)
_cell_angle_beta                 83.913(16)
_cell_angle_gamma                77.680(14)
_cell_formula_units_Z            2
_cell_length_a                   7.402(6)
_cell_length_b                   14.535(11)
_cell_length_c                   18.955(14)
_cell_measurement_reflns_used    2489
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      26.20
_cell_measurement_theta_min      2.24
_cell_volume                     1910(3)
_computing_cell_refinement       'ApexII (Bruker, 2011)'
_computing_data_collection       'ApexII (Bruker, 2011)'
_computing_data_reduction        'ApexII (Bruker, 2011)'
_computing_molecular_graphics    'SHELXL-97 (Sheldrick, 2008)'
_computing_publication_material  'publCIF (Westrip, 2010)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker ApexII'
_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  0.2133
_diffrn_reflns_av_sigmaI/netI    0.2041
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            26316
_diffrn_reflns_theta_full        25.68
_diffrn_reflns_theta_max         25.68
_diffrn_reflns_theta_min         1.12
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.230
_exptl_absorpt_correction_T_max  0.9954
_exptl_absorpt_correction_T_min  0.9136
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, (Sheldrick 2008)'
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.174
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             724
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.522
_refine_diff_density_min         -0.390
_refine_diff_density_rms         0.090
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.996
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     427
_refine_ls_number_reflns         7205
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.996
_refine_ls_R_factor_all          0.1814
_refine_ls_R_factor_gt           0.0719
_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^)+(0.0849P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1581
_refine_ls_wR_factor_ref         0.2103
_reflns_number_gt                3431
_reflns_number_total             7205
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4sc01769b2.cif
_cod_data_source_block           si
_cod_depositor_comments
'Adding full bibliography for 1517099--1517103.cif.'
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               1517100