Stable, yet "naked", azo radical anion ArNNAr<sup>-</sup> and dianion ArNNAr<sup>2-</sup> (Ar = 4-CN-2,6-<sup>i</sup>Pr<sub>2</sub>-C<sub>6</sub>H<sub>2</sub>) with selective CO<sub>2</sub> activation.
Wang, Wenqing; Tan, Gengwen; Feng, Rui; Fang, Yong; Chen, Chao; Ruan, Huapeng; Zhao, Yue; Wang, Xinping; Chemical communications (Cambridge, England) 56 (2020) 3285–3288; doi:10.1039/c9cc07382e

data_7125961
_publ_section_title
;
 Stable, yet &quot;naked&quot;, azo radical anion ArNNAr<sup>-</sup> and
 dianion ArNNAr<sup>2-</sup> (Ar =
 4-CN-2,6-<sup>i</sup>Pr<sub>2</sub>-C<sub>6</sub>H<sub>2</sub>) with
 selective CO<sub>2</sub> activation.
;
_journal_issue                   22
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              3285
_journal_page_last               3288
_journal_paper_doi               10.1039/c9cc07382e
_journal_volume                  56
_journal_year                    2020
_chemical_formula_sum            'C42 H64 N4 Na O4'
_chemical_formula_weight         711.96
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2019-10-24 deposited with the CCDC.	2020-02-10 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 103.277(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   18.399(2)
_cell_length_b                   14.6911(16)
_cell_length_c                   15.7048(16)
_cell_measurement_reflns_used    4935
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      27.18
_cell_measurement_theta_min      2.38
_cell_volume                     4131.6(8)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2014/4 (Sheldrick, 2014)'
_diffrn_ambient_temperature      153(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'd8 advance'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0374
_diffrn_reflns_av_unetI/netI     0.0338
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            13510
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        25.009
_diffrn_reflns_theta_max         25.009
_diffrn_reflns_theta_min         2.385
_exptl_absorpt_coefficient_mu    0.082
_exptl_absorpt_correction_T_max  0.9878
_exptl_absorpt_correction_T_min  0.9822
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    1.145
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1548
_exptl_crystal_size_max          0.220
_exptl_crystal_size_mid          0.190
_exptl_crystal_size_min          0.150
_refine_diff_density_max         0.474
_refine_diff_density_min         -0.466
_refine_diff_density_rms         0.047
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.026
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     244
_refine_ls_number_reflns         3633
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.026
_refine_ls_R_factor_all          0.0901
_refine_ls_R_factor_gt           0.0666
_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^)+(0.0843P)^2^+8.0336P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1712
_refine_ls_wR_factor_ref         0.1903
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2696
_reflns_number_total             3633
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9cc07382e2.cif
_cod_data_source_block           2_a_CCDC1
_cod_depositor_comments
'Adding full bibliography for 7125960--7125964.cif.'
_cod_original_cell_volume        4131.5(8)
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               7125961
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.982
_shelx_estimated_absorpt_t_max   0.988
_shelx_res_checksum              75083