Late-Stage Diversification by Selectivity Switch in meta-C–H Activation: Evidence for Singlet Stabilization
Korvorapun, Korkit; Kuniyil, Rositha; Ackermann, Lutz; ACS Catalysis  (2019) 435–; doi:10.1021/acscatal.9b04592

data_4517175
_publ_section_title
;
 Late-Stage Diversification by Selectivity Switch in meta-C--H Activation:
 Evidence for Singlet Stabilization
;
_journal_name_full               'ACS Catalysis'
_journal_page_first              435
_journal_paper_doi               10.1021/acscatal.9b04592
_journal_year                    2019
_chemical_formula_moiety         'C18 H16 N2 O'
_chemical_formula_sum            'C18 H16 N2 O'
_chemical_formula_weight         276.33
_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
_atom_sites_solution_primary     dual
_audit_creation_date             2017-07-18
_audit_creation_method
;
Olex2 1.2
(compiled 2017.03.28 svn.r3405 for OlexSys, GUI svn.r5337)
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   18.7085(6)
_cell_length_b                   6.2302(2)
_cell_length_c                   24.4878(10)
_cell_measurement_reflns_used    9603
_cell_measurement_temperature    100
_cell_measurement_theta_max      29.576
_cell_measurement_theta_min      3.328
_cell_volume                     2854.24(17)
_computing_cell_refinement       'SAINT v8.37A (Bruker, 2015)'
_computing_data_reduction        'SAINT v8.37A (Bruker, 2015)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'XT (Sheldrick, 2015)'
_diffrn_ambient_temperature      100.0
_diffrn_measured_fraction_theta_full 0.998
_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  0.0318
_diffrn_reflns_av_unetI/netI     0.0169
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       25
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       33
_diffrn_reflns_limit_l_min       -33
_diffrn_reflns_number            37416
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.576
_diffrn_reflns_theta_min         2.177
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.081
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.9381
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.1037 before and 0.0521 after correction. The Ratio of minimum to maximum transmission is 0.9381. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.286
_exptl_crystal_description       plate
_exptl_crystal_F_000             1168
_exptl_crystal_size_max          0.251
_exptl_crystal_size_mid          0.204
_exptl_crystal_size_min          0.076
_refine_diff_density_max         0.373
_refine_diff_density_min         -0.232
_refine_diff_density_rms         0.047
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.068
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     191
_refine_ls_number_reflns         3996
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.068
_refine_ls_R_factor_all          0.0469
_refine_ls_R_factor_gt           0.0436
_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^)+(0.0501P)^2^+1.3793P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1080
_refine_ls_wR_factor_ref         0.1102
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3678
_reflns_number_total             3996
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            cs9b04592_si_002.cif
_cod_data_source_block           pbca
_cod_database_code               4517175
_shelx_shelxl_version_number     2014/7
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C8(H8A,H8B)
2.b Aromatic/amide H refined with riding coordinates:
 C3(H3), C4(H4), C6(H6), C7(H7), C10(H10), C11(H11), C12(H12), C14(H14),
 C16(H16), C17(H17), C18(H18)
2.c Idealised Me refined as rotating group:
 C1(H1A,H1B,H1C)
;
_shelx_res_checksum              77546
_shelx_hkl_checksum              94846
_olex2_submission_special_instructions 'No special instructions were received'