Tethered CAAC-CAAC dimers: oxidation to persistent radical cations and bridging-unit dependent reactivity/stability of the dications.
Nayak, Mithilesh Kumar; Suhr, Simon; Chrysochos, Nicolas; Rawat, Hemant; Schulzke, Carola; Chandrasekhar, Vadapalli; Sarkar, Biprajit; Jana, Anukul; Chemical communications (Cambridge, England) 57 (2021) 1210–1213; doi:10.1039/d0cc07385g

data_7127669
_publ_section_title
;
 Tethered CAAC-CAAC dimers: oxidation to persistent radical cations and
 bridging-unit dependent reactivity/stability of the dications.
;
_journal_issue                   10
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              1210
_journal_page_last               1213
_journal_paper_doi               10.1039/d0cc07385g
_journal_volume                  57
_journal_year                    2021
_chemical_formula_moiety         'C22 H40 N2, 2(C F3 O3 S)'
_chemical_formula_sum            'C24 H40 F6 N2 O6 S2'
_chemical_formula_weight         630.70
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2020-05-21 deposited with the CCDC.	2020-12-18 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 91.094(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.2936(4)
_cell_length_b                   16.1144(4)
_cell_length_c                   16.1904(5)
_cell_measurement_reflns_used    12974
_cell_measurement_temperature    120.00(10)
_cell_measurement_theta_max      28.9700
_cell_measurement_theta_min      3.1070
_cell_volume                     2945.95(16)
_computing_cell_refinement       'CrysAlisPro 1.171.39.29d (Rigaku OD, 2017)'
_computing_data_collection       'CrysAlisPro 1.171.39.29d (Rigaku OD, 2017)'
_computing_data_reduction        'CrysAlisPro 1.171.39.29d (Rigaku OD, 2017)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      120.00(10)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.881
_diffrn_measurement_device_type  'XtaLAB AFC12 (RINC): Kappa single'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0302
_diffrn_reflns_av_unetI/netI     0.0285
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.881
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            26173
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.881
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.029
_diffrn_reflns_theta_min         2.516
_diffrn_source                   'fine-focus sealed X-ray tube'
_exptl_absorpt_coefficient_mu    0.259
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.93748
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.39.29d (Rigaku Oxford Diffraction, 2017)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.422
_exptl_crystal_description       block
_exptl_crystal_F_000             1328
_exptl_crystal_size_max          0.13
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.660
_refine_diff_density_min         -0.573
_refine_diff_density_rms         0.057
_refine_ls_extinction_coef       0.0030(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2018/3 (Sheldrick 2018)'
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     370
_refine_ls_number_reflns         6921
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.054
_refine_ls_R_factor_all          0.0486
_refine_ls_R_factor_gt           0.0411
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0505P)^2^+1.8269P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1050
_refine_ls_wR_factor_ref         0.1091
_reflns_Friedel_coverage         0.000
_reflns_number_gt                5932
_reflns_number_total             6921
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0cc07385g2.cif
_cod_data_source_block           AJ0759
_cod_depositor_comments
'Adding full bibliography for 7127659--7127670.cif.'
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7127669
_shelx_shelxl_version_number     2018/3
_shelx_res_checksum              77726