Benzodichalcogenophenes with perfluoroarene termini.
Wang, Yongfeng; Parkin, Sean R.; Watson, Mark D.; Organic letters 10 (2008) 4421–4424; doi:10.1021/ol801569m

data_1504859
_publ_section_title
;
 Benzodichalcogenophenes with perfluoroarene termini.
;
_journal_issue                   20
_journal_name_full               'Organic letters'
_journal_page_first              4421
_journal_page_last               4424
_journal_paper_doi               10.1021/ol801569m
_journal_volume                  10
_journal_year                    2008
_chemical_formula_moiety         'C44 H44 F10 S2 Si2'
_chemical_formula_sum            'C44 H44 F10 S2 Si2'
_chemical_formula_weight         883.09
_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
_cell_angle_alpha                90.647(2)
_cell_angle_beta                 98.346(2)
_cell_angle_gamma                101.226(2)
_cell_formula_units_Z            1
_cell_length_a                   8.0496(4)
_cell_length_b                   8.7262(5)
_cell_length_c                   15.3591(8)
_cell_measurement_reflns_used    9941
_cell_measurement_temperature    90.0(2)
_cell_measurement_theta_max      69.60
_cell_measurement_theta_min      5.67
_cell_volume                     1046.14(10)
_computing_cell_refinement       APEX2
_computing_data_collection       'APEX2 (Bruker-AXS, 2006)'
_computing_data_reduction        APEX2
_computing_molecular_graphics    'XP in SHELXTL (Sheldrick, 2008)'
_computing_publication_material
; 
SHELX97-2 (Sheldrick, 2008) and local procedures 
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      90.0(2)
_diffrn_detector_area_resol_mean 18
_diffrn_measured_fraction_theta_full 0.976
_diffrn_measured_fraction_theta_max 0.976
_diffrn_measurement_device_type  'Bruker X8 Proteum diffractometer'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  'graded multilayer optics'
_diffrn_radiation_source         'fine-focus rotating anode'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0376
_diffrn_reflns_av_sigmaI/netI    0.0316
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            15186
_diffrn_reflns_theta_full        69.64
_diffrn_reflns_theta_max         69.64
_diffrn_reflns_theta_min         5.17
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    2.375
_exptl_absorpt_correction_T_max  0.8905
_exptl_absorpt_correction_T_min  0.6777
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sadabs in APEX2 (BrukerAXS, 2006)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.402
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rod
_exptl_crystal_F_000             458
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.654
_refine_diff_density_min         -0.656
_refine_diff_density_rms         0.056
_refine_ls_extinction_coef       0.0016(4)
_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   1.110
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     385
_refine_ls_number_reflns         3844
_refine_ls_number_restraints     339
_refine_ls_restrained_S_all      1.069
_refine_ls_R_factor_all          0.0541
_refine_ls_R_factor_gt           0.0495
_refine_ls_shift/su_max          0.008
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0253P)^2^+1.6280P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1139
_refine_ls_wR_factor_ref         0.1176
_reflns_number_gt                3528
_reflns_number_total             3844
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            ol801569m_si_001.cif
_cod_data_source_block           x07100_1i
_cod_database_code               1504859