Dioxygenation of unprotected mesoionic N‑heterocyclic olefins
Liang, Qiuming; Hayashi, Kasumi; li, Longfei longfei; Song, Datong; Chemical Communications  (2021) –; doi:10.1039/D1CC04695K

data_7128981
_publ_section_title
;
 Dioxygenation of unprotected mesoionic N&#x2011;heterocyclic olefins
;
_journal_name_full               'Chemical Communications'
_journal_paper_doi               10.1039/D1CC04695K
_journal_year                    2021
_chemical_formula_sum            'C12 H15 N3 O'
_chemical_formula_weight         217.27
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2016/6
_audit_update_record
;
2021-08-19 deposited with the CCDC.	2021-09-22 downloaded from the CCDC.
;
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_cell_angle_beta                 94.947(13)
_cell_angle_gamma                90
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_cell_length_b                   8.899(3)
_cell_length_c                   37.044(15)
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_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      30.090
_cell_measurement_theta_min      2.974
_cell_volume                     3536(2)
_computing_structure_refinement  'SHELXL-2016/6 (Sheldrick, 2016)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'Bruker Kappa Photon II'
_diffrn_measurement_method       'omega and phi scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0957
_diffrn_reflns_av_unetI/netI     0.0821
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.989
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       51
_diffrn_reflns_limit_l_min       -50
_diffrn_reflns_number            126978
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.989
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         30.090
_diffrn_reflns_theta_min         2.974
_exptl_absorpt_coefficient_mu    0.081
_exptl_absorpt_correction_T_max  0.7342
_exptl_absorpt_correction_T_min  0.7104
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
 SADABS 2016/2: Krause, L., Herbst-Irmer, R., Sheldrick G.M. & Stalke D.,
 J. Appl. Cryst. 48 (2015) 3-10
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.225
_exptl_crystal_description       block
_exptl_crystal_F_000             1392
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.294
_refine_diff_density_min         -0.305
_refine_diff_density_rms         0.064
_refine_ls_extinction_coef       0.0105(11)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2016/6 (Sheldrick 2016)'
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     446
_refine_ls_number_reflns         10296
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.027
_refine_ls_R_factor_all          0.1130
_refine_ls_R_factor_gt           0.0582
_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^)+(0.0657P)^2^+0.6885P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1333
_refine_ls_wR_factor_ref         0.1529
_reflns_Friedel_coverage         0.000
_reflns_number_gt                6287
_reflns_number_total             10296
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d1cc04695k2.cif
_cod_data_source_block           wl368a
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7128981
_shelx_shelxl_version_number     2016/6
_shelx_res_checksum              94628