The effect of fluorinated aryl substituents on the crystal structures of 1,2,3,5-dithiadiazolyl radicals
Clarke, Caroline S.; Haynes, Delia A.; Smith, J. Nicholas B.; Batsanov, Andrei S.; Howard, Judith A. K.; Pascu, Sofia I.; Rawson, Jeremy M.; CrystEngComm 12 (2010) 172–; doi:10.1039/b911636b

data_7211640
_publ_section_title
;
 The effect of fluorinated aryl substituents on the crystal structures of
 1,2,3,5-dithiadiazolyl radicals
;
_journal_issue                   1
_journal_name_full               CrystEngComm
_journal_page_first              172
_journal_paper_doi               10.1039/b911636b
_journal_volume                  12
_journal_year                    2010
_chemical_formula_moiety         'C7 H3 F2 N2 S2'
_chemical_formula_sum            'C7 H3 F2 N2 S2'
_chemical_formula_weight         217.23
_chemical_name_systematic
;
2,6-difluoro-1,2,3,5-dithiadiazolyl
;
_space_group_IT_number           88
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  '-I 4ad'
_symmetry_space_group_name_H-M   'I 41/a :2'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            32
_cell_length_a                   30.168(1)
_cell_length_b                   30.168(1)
_cell_length_c                   7.1749(2)
_cell_measurement_reflns_used    17747
_cell_measurement_temperature    180(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      5.10
_cell_volume                     6529.9(4)
_computing_cell_refinement
;
HKL DENZO and SCALEPACK (Otwinowski & Minor, 1997)'
;
_computing_data_collection       'COLLECT (Nonius, 1998)'
_computing_data_reduction
;
HKL DENZO and SCALEPACK (Otwinowski & Minor, 1997)'
;
_computing_molecular_graphics    'SHELXTL (Bruker, 2000)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      180(2)
_diffrn_measured_fraction_theta_full 0.964
_diffrn_measured_fraction_theta_max 0.964
_diffrn_measurement_device_type  'Nonius KappaCCD'
_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  0.0329
_diffrn_reflns_av_sigmaI/netI    0.0398
_diffrn_reflns_limit_h_max       38
_diffrn_reflns_limit_h_min       -38
_diffrn_reflns_limit_k_max       39
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            10898
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         5.18
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.631
_exptl_absorpt_correction_T_max  0.942
_exptl_absorpt_correction_T_min  0.835
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SORTAV (Blessing, 1995)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.768
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             3488
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.218
_refine_diff_density_min         -0.226
_refine_diff_density_rms         0.051
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.028
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     235
_refine_ls_number_reflns         3604
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.028
_refine_ls_R_factor_all          0.0487
_refine_ls_R_factor_gt           0.0337
_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^)+(0.0332P)^2^+5.5591P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0785
_refine_ls_wR_factor_ref         0.0847
_reflns_number_gt                2877
_reflns_number_total             3604
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b911636b.txt
_cod_data_source_block           4b
_cod_original_sg_symbol_H-M      'I 41/a'
_cod_database_code               7211640