Sequential Electrophilic and Photochemical Cyclizations from Bis(bithienyl)acetylene to a Tetrathienonaphthalene Core.
Dou, Chuandong; Saito, Shohei; Gao, Libin; Matsumoto, Naoki; Karasawa, Takashi; Zhang, Hongyu; Fukazawa, Aiko; Yamaguchi, Shigehiro; Organic letters 15 (2013) 80–83; doi:10.1021/ol303107y

data_1508850
_publ_section_title
;
 Sequential Electrophilic and Photochemical Cyclizations from
 Bis(bithienyl)acetylene to a Tetrathienonaphthalene Core.
;
_journal_issue                   1
_journal_name_full               'Organic letters'
_journal_page_first              80
_journal_page_last               83
_journal_paper_doi               10.1021/ol303107y
_journal_volume                  15
_journal_year                    2013
_chemical_formula_moiety         'C36 H48 S4 Si2'
_chemical_formula_sum            'C36 H48 S4 Si2'
_chemical_formula_weight         665.16
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_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
_cell_angle_alpha                90
_cell_angle_beta                 110.2852(9)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   14.450(3)
_cell_length_b                   16.149(3)
_cell_length_c                   16.146(4)
_cell_measurement_reflns_used    7879
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      31.5050
_cell_measurement_theta_min      2.5879
_cell_volume                     3534.0(13)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      123(2)
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 0.979
_diffrn_measured_fraction_theta_max 0.979
_diffrn_measurement_device_type
;
Saturn70 CCD (4x4 bin mode) with MicroMax-007
;
_diffrn_measurement_method       dtprofit.ref
_diffrn_radiation_monochromator  confocal
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71070
_diffrn_reflns_av_R_equivalents  0.0255
_diffrn_reflns_av_sigmaI/netI    0.0209
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            22993
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.59
_exptl_absorpt_coefficient_mu    0.361
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.9400
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Jacobson, R. (1998) Private communication'
_exptl_crystal_colour            'light yellow'
_exptl_crystal_density_diffrn    1.250
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1424
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.20
_refine_diff_density_max         1.052
_refine_diff_density_min         -0.377
_refine_diff_density_rms         0.091
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.159
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     421
_refine_ls_number_reflns         6086
_refine_ls_number_restraints     514
_refine_ls_restrained_S_all      1.151
_refine_ls_R_factor_all          0.0798
_refine_ls_R_factor_gt           0.0679
_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^)+(0.1227P)^2^+3.4514P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2065
_refine_ls_wR_factor_ref         0.2202
_reflns_number_gt                4837
_reflns_number_total             6086
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol303107y_si_002.cif
_cod_data_source_block           compound_1a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        3534.1(13)
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               1508850