Bu<sub>4</sub>NI-Catalyzed, Radical-Induced Regioselective <i>N</i>-Alkylations and Arylations of Tetrazoles Using Organic Peroxides/Peresters.
Rajamanickam, Suresh; Sah, Chitranjan; Mir, Bilal Ahmad; Ghosh, Subhendu; Sethi, Garima; Yadav, Vinita; Venkataramani, Sugumar; Patel, Bhisma K.; The Journal of organic chemistry  (2020) –; doi:10.1021/acs.joc.9b02875

data_4037842
_publ_section_title
;
 Bu<sub>4</sub>NI-Catalyzed, Radical-Induced Regioselective
 <i>N</i>-Alkylations and Arylations of Tetrazoles Using Organic
 Peroxides/Peresters.
;
_journal_name_full               'The Journal of organic chemistry'
_journal_paper_doi               10.1021/acs.joc.9b02875
_journal_year                    2020
_chemical_formula_sum            'C8 H7 Br N4'
_chemical_formula_weight         239.09
_space_group_IT_number           29
_space_group_name_Hall           'P 2c -2ac'
_space_group_name_H-M_alt        'P c a 21'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_H-M   'P c a 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.0928(3)
_cell_length_b                   6.9436(4)
_cell_length_c                   21.7386(8)
_cell_measurement_reflns_used    716
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.8650
_cell_measurement_theta_min      3.4860
_cell_volume                     919.67(8)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'SuperNova, Single source at offset, Eos'
_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  0.0268
_diffrn_reflns_av_sigmaI/netI    0.0423
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            2088
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.93
_exptl_absorpt_coefficient_mu    4.425
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.27600
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.727
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             472
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.574
_refine_diff_density_min         -0.426
_refine_diff_density_rms         0.071
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.03(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.001
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     119
_refine_ls_number_reflns         1160
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.000
_refine_ls_R_factor_all          0.0576
_refine_ls_R_factor_gt           0.0418
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0484P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0883
_refine_ls_wR_factor_ref         0.0984
_reflns_number_gt                915
_reflns_number_total             1160
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo9b02875_si_003.cif
_cod_data_source_block           rsh-103-a
_cod_database_code               4037842