Trifluoromethyl-substituted tetrathiafulvalenes.
Jeannin, Olivier; Barrière, Frédéric; Fourmigué, Marc; Beilstein journal of organic chemistry 11 (2015) 647–658; doi:10.3762/bjoc.11.73

data_4030946
_publ_section_title
;
 Trifluoromethyl-substituted tetrathiafulvalenes.
;
_journal_name_full               'Beilstein journal of organic chemistry'
_journal_page_first              647
_journal_page_last               658
_journal_paper_doi               10.3762/bjoc.11.73
_journal_volume                  11
_journal_year                    2015
_chemical_formula_sum            'C12 H6 F6 O4 S4'
_chemical_formula_weight         456.41
_chemical_name_common            o-(CF3)2-TTF-o-(CO2Me)
_chemical_name_systematic
;
4,5-bis(trifluoromethyl)-4',5'-bis(methoxycarbonyl)tetrathiafulvalene
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yab'
_symmetry_space_group_name_H-M   'P 1 21/a 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 97.834(13)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.4209(8)
_cell_length_b                   17.0659(17)
_cell_length_c                   13.5707(15)
_cell_measurement_reflns_used    8000
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.85
_cell_measurement_theta_min      1.85
_cell_volume                     1702.6(3)
_computing_cell_refinement       'CELL, Stoe-IPDS'
_computing_data_collection       'EXPOSE, Stoe-IPDS'
_computing_data_reduction        'INTEGRATE, Stoe-IPDS'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 6.66
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'STOE IPDS'
_diffrn_measurement_method       'Oscillation, phi incr. 1.4 deg'
_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  0.0639
_diffrn_reflns_av_sigmaI/netI    0.0535
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            12937
_diffrn_reflns_theta_full        25.86
_diffrn_reflns_theta_max         25.86
_diffrn_reflns_theta_min         1.93
_exptl_absorpt_coefficient_mu    0.636
_exptl_absorpt_correction_T_max  0.9013
_exptl_absorpt_correction_T_min  0.7816
_exptl_absorpt_correction_type   gaussian
_exptl_absorpt_process_details
;
a grid of  8 x  8 x  8 =   512 sampling points was used
;
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.781
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       bulk
_exptl_crystal_F_000             912
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.36
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.211
_refine_diff_density_min         -0.166
_refine_diff_density_rms         0.044
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.898
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     289
_refine_ls_number_reflns         3263
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.898
_refine_ls_R_factor_all          0.0612
_refine_ls_R_factor_gt           0.0320
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0434P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0706
_refine_ls_wR_factor_ref         0.0783
_reflns_number_gt                2161
_reflns_number_total             3263
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            1860-5397-11-73-S2.cif
_cod_data_source_block           3bc
_cod_depositor_comments
'Adding full bibliography for 4030944--4030949.cif.'
_cod_original_sg_symbol_H-M      P21/a
_cod_database_code               4030946
_exptl_absorpt_correction_t_ave  0.8597