Hydrogen bond, as a protecting group, enables the photocatalytic [2+2] cycloaddition of redox-active aliphatic amine-containing indole derivatives
Li, Hao; He, Yishu; Zhang, Di; Yang, Li; Zhang, Jiarui; Long, Rui-ling; Lu, Ji; Wei, Jun; Yang, Lin; Wei, Siping; Yi, Dong; Zhang, Zhijie; Fu, Qiang; Chemical Communications  (2022) –; doi:10.1039/D1CC06935G

data_7129667
_publ_section_title
;
 Hydrogen bond, as a protecting group, enables the photocatalytic [2+2]
 cycloaddition of redox-active aliphatic amine-containing indole
 derivatives
;
_journal_name_full               'Chemical Communications'
_journal_paper_doi               10.1039/D1CC06935G
_journal_year                    2022
_chemical_formula_moiety         'C18 H22 N2 O2'
_chemical_formula_sum            'C18 H22 N2 O2'
_chemical_formula_weight         298.37
_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-2016/6
_audit_update_record
;
2021-07-29 deposited with the CCDC.	2022-02-03 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
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_cell_length_b                   10.344(2)
_cell_length_c                   19.924(4)
_cell_measurement_reflns_used    5037
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      26.69
_cell_measurement_theta_min      2.44
_cell_volume                     3137.4(11)
_computing_structure_refinement  'SHELXL-2016/6 (Sheldrick, 2016)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.999
_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  0.0334
_diffrn_reflns_av_unetI/netI     0.0262
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            18409
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.529
_diffrn_reflns_theta_min         2.044
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.263
_exptl_crystal_description       block
_exptl_crystal_F_000             1280
_exptl_crystal_size_max          0.180
_exptl_crystal_size_mid          0.160
_exptl_crystal_size_min          0.150
_exptl_transmission_factor_max   0.988
_exptl_transmission_factor_min   0.985
_refine_diff_density_max         0.203
_refine_diff_density_min         -0.292
_refine_diff_density_rms         0.073
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.086
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     201
_refine_ls_number_reflns         3611
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.086
_refine_ls_R_factor_all          0.0617
_refine_ls_R_factor_gt           0.0472
_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^)+(0.1000P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1352
_refine_ls_wR_factor_ref         0.1509
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2822
_reflns_number_total             3611
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d1cc06935g2.cif
_cod_data_source_block           LH0106
_cod_original_cell_volume        3137.3(10)
_cod_database_code               7129667
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_min   0.985
_shelx_estimated_absorpt_t_max   0.988
_shelx_res_checksum              63667