A bis-NHC–CAAC dimer derived dicationic diradical
Nayak, Mithilesh Kumar; Sarkar, Pallavi; Elvers, Benedict J.; Mehta, Sakshi; Zhang, Fangyuan; Chrysochos, Nicolas; Krummenacher, Ivo; Vijayakanth, Thangavel; Narayanan, Ramakirushnan Suriya; Dolai, Ramapada; Roy, Biswarup; Malik, Vishal; Rawat, Hemant; Mondal, Abhishake; Boomishankar, Ramamoorthy; Pati, Swapan K.; Braunschweig, Holger; Schulzke, Carola; Ravat, Prince; Jana, Anukul; Chemical Science 13 (2022) 12533–12539; doi:10.1039/D2SC03937K

data_1567815
_publ_section_title
;
 A bis-NHC--CAAC dimer derived dicationic diradical
;
_journal_issue                   42
_journal_name_full               'Chemical Science'
_journal_page_first              12533
_journal_page_last               12539
_journal_paper_doi               10.1039/D2SC03937K
_journal_volume                  13
_journal_year                    2022
_chemical_formula_moiety         'C36 H62 N6, 2(C F3 O3 S), 2(C2 H3 N)'
_chemical_formula_sum            'C42 H68 F6 N8 O6 S2'
_chemical_formula_weight         959.16
_space_group_crystal_system      orthorhombic
_space_group_IT_number           33
_space_group_name_Hall           'P 2c -2n'
_space_group_name_H-M_alt        'P n a 21'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2022-03-25 deposited with the CCDC.	2022-09-21 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   27.5528(14)
_cell_length_b                   8.4292(5)
_cell_length_c                   22.0477(12)
_cell_measurement_reflns_used    9859
_cell_measurement_temperature    297(2)
_cell_measurement_theta_max      21.3880
_cell_measurement_theta_min      2.8250
_cell_volume                     5120.5(5)
_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    'XP Version 5.1 by Bruker AXS 1998'
_computing_publication_material  'CIFTAB (Sheldrick, 2015)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT-2016 (Sheldrick, 2015)'
_diffrn_ambient_temperature      297(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.992
_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  0.0555
_diffrn_reflns_av_unetI/netI     0.0426
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.992
_diffrn_reflns_limit_h_max       35
_diffrn_reflns_limit_h_min       -35
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            62744
_diffrn_reflns_point_group_measured_fraction_full 0.933
_diffrn_reflns_point_group_measured_fraction_max 0.902
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.102
_diffrn_reflns_theta_min         2.587
_diffrn_source                   'fine-focus sealed X-ray tube'
_exptl_absorpt_coefficient_mu    0.176
_exptl_absorpt_correction_T_max  0.972
_exptl_absorpt_correction_T_min  0.938
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.39.29d (Rigaku Oxford Diffraction, 2017)
Analytical numeric absorption correction using a multifaceted crystal
model based on expressions derived by R.C. Clark & J.S. Reid.
(Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.244
_exptl_crystal_description       block
_exptl_crystal_F_000             2040
_exptl_crystal_size_max          0.518
_exptl_crystal_size_mid          0.357
_exptl_crystal_size_min          0.210
_refine_diff_density_max         0.531
_refine_diff_density_min         -0.314
_refine_diff_density_rms         0.051
_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   0.26(19)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.026
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     780
_refine_ls_number_reflns         10191
_refine_ls_number_restraints     1525
_refine_ls_restrained_S_all      1.090
_refine_ls_R_factor_all          0.1046
_refine_ls_R_factor_gt           0.0741
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1529P)^2^+0.3882P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2041
_refine_ls_wR_factor_ref         0.2258
_reflns_Friedel_coverage         0.771
_reflns_Friedel_fraction_full    0.864
_reflns_Friedel_fraction_max     0.806
_reflns_number_gt                6972
_reflns_number_total             10191
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d2sc03937k2.cif
_cod_data_source_block           AJ2007
_cod_depositor_comments
'Adding full bibliography for 1567803--1567816.cif.'
_cod_database_code               1567815
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.914
_shelx_estimated_absorpt_t_max   0.964
_shelx_res_checksum              72587
_shelx_hkl_checksum              49179