A TBADT-enabled photo-induced radical cyclization pathway: concise access to functionalized oxindoles
Gowda, Punith S.; Sharada, Duddu S.; Satyanarayana, Gedu; Chemical Communications 61 (2025) 8391–8394; doi:10.1039/D5CC01590A

data_7134498
_publ_section_title
;
 A TBADT-enabled photo-induced radical cyclization pathway: concise access
 to functionalized oxindoles
;
_journal_issue                   46
_journal_name_full               'Chemical Communications'
_journal_page_first              8391
_journal_page_last               8394
_journal_paper_doi               10.1039/D5CC01590A
_journal_volume                  61
_journal_year                    2025
_chemical_formula_moiety         'C16 H21 N O'
_chemical_formula_sum            'C16 H21 N O'
_chemical_formula_weight         243.34
_space_group_crystal_system      monoclinic
_space_group_IT_number           12
_space_group_name_Hall           '-C 2y'
_space_group_name_H-M_alt        'C 1 2/m 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_audit_creation_date             2024-07-23
_audit_creation_method
;
Olex2 1.5-alpha
(compiled 2024.02.16 svn.r378c4104 for OlexSys, GUI svn.r6928)
;
_audit_update_record
;
2024-11-12 deposited with the CCDC.	2025-05-05 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 103.577(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   19.461(3)
_cell_length_b                   7.0742(11)
_cell_length_c                   10.8476(15)
_cell_measurement_reflns_used    2734
_cell_measurement_temperature    298
_cell_measurement_theta_max      23.695
_cell_measurement_theta_min      2.153
_cell_volume                     1451.7(4)
_computing_cell_refinement       'SAINT V8.40B (?, 2016)'
_computing_data_reduction        'SAINT V8.40B (?, 2016)'
_computing_molecular_graphics    'Olex2 1.5-alpha (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5-alpha (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL  (Sheldrick, 2008)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      298
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker APEX-IV Photon II'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0993
_diffrn_reflns_av_unetI/netI     0.0546
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            16148
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.994
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.089
_diffrn_reflns_theta_min         2.533
_diffrn_source_current           1.4
_diffrn_source_power             0.07
_diffrn_source_voltage           50.0
_exptl_absorpt_coefficient_mu    0.069
_exptl_absorpt_correction_T_max  0.7455
_exptl_absorpt_correction_T_min  0.5247
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.1539 before and 0.0847 after correction.
The Ratio of minimum to maximum transmission is 0.7038.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            'clear light orange'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    orange
_exptl_crystal_density_diffrn    1.113
_exptl_crystal_description       block
_exptl_crystal_F_000             528
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.19
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.169
_refine_diff_density_min         -0.131
_refine_diff_density_rms         0.034
_refine_ls_extinction_coef       0.016(4)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2019/1 (Sheldrick 2019)'
_refine_ls_goodness_of_fit_ref   1.031
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     129
_refine_ls_number_reflns         1720
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.031
_refine_ls_R_factor_all          0.1005
_refine_ls_R_factor_gt           0.0530
_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^)+(0.0666P)^2^+0.4089P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1283
_refine_ls_wR_factor_ref         0.1505
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1035
_reflns_number_total             1720
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5cc01590a2.cif
_cod_data_source_block           mo_gs_ps_p4_141
_cod_depositor_comments
'Adding full bibliography for 7134498--7134500.cif.'
_cod_database_code               7134498
_shelx_shelxl_version_number     2019/1
_shelx_estimated_absorpt_t_max   0.988
_shelx_estimated_absorpt_t_min   0.984
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2. Others
 Fixed Sof: H16A(0.5) H16B(0.5) H16C(0.5) H2A(0.5) H2B(0.5) H2C(0.5) H1A(0.5)
 H1B(0.5) H1C(0.5)
3.a Aromatic/amide H refined with riding coordinates:
 C6(H6), C11(H11), C3(H3)
3.b Idealised Me refined as rotating group:
 C16(H16A,H16B,H16C), C2(H2A,H2B,H2C), C1(H1A,H1B,H1C)
;
_shelx_res_checksum              41073
_shelx_hkl_checksum              69268
_olex2_exptl_crystal_mounting_method 'Nylon loop used'
_olex2_submission_special_instructions 'No special instructions were received'