Atropisomeric Properties of 7-, 8-, and 9-Membered-Ring Dibenzolactams: Conformation, Thermal Stability, and Chemical Reactivity
Hidetsugu Tabata; Hiroyuki Suzuki; Kumi Akiba; Hideyo Takahashi; Hideaki Natsugari; Journal of Organic Chemistry 75 (2010) 5984–5993; doi:10.1021/jo1013383

data_4025664
_publ_section_title
;
 Atropisomeric Properties of 7-, 8-, and 9-Membered-Ring Dibenzolactams:
 Conformation, Thermal Stability, and Chemical Reactivity
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              5984
_journal_page_last               5993
_journal_paper_doi               10.1021/jo1013383
_journal_volume                  75
_journal_year                    2010
_chemical_absolute_configuration 'CHOOSE rm ad rmad syn or unk'
_chemical_formula_moiety         'C18 H19 N O '
_chemical_formula_sum            'C18 H19 N O'
_chemical_formula_weight         265.35
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      19
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_cell_angle_alpha                90.0000
_cell_angle_beta                 90.0000
_cell_angle_gamma                90.0000
_cell_formula_units_Z            4
_cell_length_a                   8.85223(16)
_cell_length_b                   11.3388(2)
_cell_length_c                   14.4403(3)
_cell_measurement_reflns_used    13928
_cell_measurement_temperature    173.1
_cell_measurement_theta_max      68.3
_cell_measurement_theta_min      3.1
_cell_volume                     1449.43(5)
_computing_cell_refinement       PROCESS-AUTO
_computing_data_collection       PROCESS-AUTO
_computing_data_reduction        CrystalStructure
_computing_publication_material  'CrystalStructure 3.8'
_computing_structure_refinement  CRYSTALS
_computing_structure_solution    SIR92
_diffrn_detector_area_resol_mean 10.00
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Rigaku RAXIS-RAPID'
_diffrn_measurement_method       \w
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54187
_diffrn_reflns_av_R_equivalents  0.025
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            15047
_diffrn_reflns_theta_full        68.25
_diffrn_reflns_theta_max         68.25
_exptl_absorpt_coefficient_mu    0.582
_exptl_absorpt_correction_T_max  0.890
_exptl_absorpt_correction_T_min  0.771
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
    Higashi, T. (1995). Program for Absorption Correction.
    Rigaku Corporation, Tokyo, Japan.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.216
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             568.00
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.37
_refine_diff_density_min         -0.30
_refine_ls_abs_structure_details
'Flack, H. D. (1983), Acta Cryst. A39, 876-881.  1109 Friedel Pairs'
_refine_ls_abs_structure_Flack   -0.2(3)
_refine_ls_extinction_coef       12(7)
_refine_ls_extinction_method
'Larson (1970) Crystallographic Computing eq. 22'
_refine_ls_goodness_of_fit_ref   0.966
_refine_ls_hydrogen_treatment    refall
_refine_ls_number_parameters     202
_refine_ls_number_reflns         2648
_refine_ls_R_factor_gt           0.0381
_refine_ls_shift/su_max          0.0000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[0.0017Fo^2^ + 1.0000\s(Fo^2^)]/(4Fo^2^)'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.1091
_reflns_number_gt                2420
_reflns_number_total             2648
_reflns_threshold_expression     F^2^>2.0\s(F^2^)
_cod_data_source_file            jo1013383_si_005.cif
_cod_data_source_block           '_090924'
_cod_original_formula_sum        'C18 H19 N O '
_cod_database_code               4025664