Synthesis and Photophysical Properties of Aza[n]helicenes.
Upadhyay, Gourav M.; Talele, Harish R.; Bedekar, Ashutosh V.; The Journal of organic chemistry 81 (2016) 7751–7759; doi:10.1021/acs.joc.6b01395

data_4037058
_publ_section_title
;
 Synthesis and Photophysical Properties of Aza[n]helicenes.
;
_journal_issue                   17
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              7751
_journal_page_last               7759
_journal_paper_doi               10.1021/acs.joc.6b01395
_journal_volume                  81
_journal_year                    2016
_chemical_formula_sum            'C40 H29 N'
_chemical_formula_weight         523.64
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-14
_cell_angle_alpha                90.00
_cell_angle_beta                 100.717(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   18.8646(9)
_cell_length_b                   16.0066(6)
_cell_length_c                   9.2096(4)
_cell_measurement_reflns_used    3301
_cell_measurement_temperature    566(2)
_cell_measurement_theta_max      71.4920
_cell_measurement_theta_min      3.6530
_cell_volume                     2732.4(2)
_computing_cell_refinement
;
CrysAlisPro, Agilent Technologies,
Version 1.171.36.28 (release 01-02-2013 CrysAlis171 .NET)
(compiled Feb  1 2013,16:14:44)
;
_computing_data_collection
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CrysAlisPro, Agilent Technologies,
Version 1.171.36.28 (release 01-02-2013 CrysAlis171 .NET)
(compiled Feb  1 2013,16:14:44)
;
_computing_data_reduction
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CrysAlisPro, Agilent Technologies,
Version 1.171.36.28 (release 01-02-2013 CrysAlis171 .NET)
(compiled Feb  1 2013,16:14:44)
;
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'SIR2008 (Burla et al., 2007)'
_diffrn_ambient_temperature      566(2)
_diffrn_detector_area_resol_mean 8.0851
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Xcalibur, Eos, Gemini'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Cu) X-ray Source'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0289
_diffrn_reflns_av_sigmaI/netI    0.0297
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            12303
_diffrn_reflns_theta_full        70.07
_diffrn_reflns_theta_max         70.07
_diffrn_reflns_theta_min         3.65
_exptl_absorpt_coefficient_mu    0.555
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.71424
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.36.28 (release 01-02-2013 CrysAlis171 .NET)
(compiled Feb  1 2013,16:14:44)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.273
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1104
_exptl_crystal_size_max          0.31
_exptl_crystal_size_mid          0.29
_exptl_crystal_size_min          0.23
_refine_diff_density_max         0.719
_refine_diff_density_min         -0.719
_refine_diff_density_rms         0.044
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.110
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     373
_refine_ls_number_reflns         5186
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.110
_refine_ls_R_factor_all          0.1007
_refine_ls_R_factor_gt           0.0773
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1415P)^2^+0.9087P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2360
_refine_ls_wR_factor_ref         0.2625
_reflns_number_gt                3760
_reflns_number_total             5186
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo6b01395_si_004.cif
_cod_data_source_block           shelx
_cod_database_code               4037058