Molecular Iodine-Promoted [3 + 2] Oxidative Cyclization for the Synthesis of Heteroarene-Fused [1,2,4] Thiadiazoles/Selenadiazoles.
Chen, Jin-Yu; Selvaraju, Manikandan; Lin, Yen-Tzu; Dhole, Sandip; Lin, Chih-Yu; Sun, Chung-Ming; The Journal of organic chemistry 85 (2020) 5570–5579; doi:10.1021/acs.joc.0c00421

data_4038188
_publ_section_title
;
 Molecular Iodine-Promoted [3 + 2] Oxidative Cyclization for the Synthesis
 of Heteroarene-Fused [1,2,4] Thiadiazoles/Selenadiazoles.
;
_journal_issue                   8
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              5570
_journal_page_last               5579
_journal_paper_doi               10.1021/acs.joc.0c00421
_journal_volume                  85
_journal_year                    2020
_chemical_formula_moiety         'C24 H20 N4 O3 S'
_chemical_formula_sum            'C24 H20 N4 O3 S'
_chemical_formula_weight         444.50
_space_group_crystal_system      orthorhombic
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/6
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   13.0311(13)
_cell_length_b                   10.4176(10)
_cell_length_c                   30.827(3)
_cell_measurement_reflns_used    3300
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.3660
_cell_measurement_theta_min      2.5890
_cell_volume                     4184.9(7)
_computing_cell_refinement       'SAINT V8.34A (Bruker AXS Inc., 2013)'
_computing_data_collection       'APEX2 (Bruker AXS, 2010)'
_computing_data_reduction        'SAINT V8.34A (Bruker AXS Inc., 2013)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL-2014/6 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.977
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1478
_diffrn_reflns_av_unetI/netI     0.1059
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.977
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       38
_diffrn_reflns_limit_l_min       -38
_diffrn_reflns_number            32838
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.977
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.506
_diffrn_reflns_theta_min         2.046
_exptl_absorpt_coefficient_mu    0.190
_exptl_absorpt_correction_T_max  0.7454
_exptl_absorpt_correction_T_min  0.5587
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2014/4 (Bruker AXS Inc.)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.411
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       acicular
_exptl_crystal_F_000             1856
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.01
_exptl_crystal_size_min          0.01
_refine_diff_density_max         0.364
_refine_diff_density_min         -0.368
_refine_diff_density_rms         0.060
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.964
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     291
_refine_ls_number_reflns         4238
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.964
_refine_ls_R_factor_all          0.1051
_refine_ls_R_factor_gt           0.0521
_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^)+(0.0392P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0900
_refine_ls_wR_factor_ref         0.1022
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2650
_reflns_number_total             4238
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo0c00421_si_002.cif
_cod_data_source_block           3aa
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_crystal_density_meas' value 'not measured' was
changed to '?' -- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 7556 2019-12-06 15:28:31Z antanas 

 Adding full bibliography for 4038187--4038192.cif.
;
_cod_database_code               4038188
_shelxl_version_number           2014/6
_shelx_res_checksum              97332
_shelx_hkl_checksum              66941