Synthesis of 1,8-diazaanthracenes as building blocks for internally functionalized aromatic oligoamide foldamers.
Singleton, Michael L.; Castellucci, Nicola; Massip, Stéphane; Kauffmann, Brice; Ferrand, Yann; Huc, Ivan; The Journal of organic chemistry 79 (2014) 2115–2122; doi:10.1021/jo402852m

data_4029127
_publ_section_title
;
 Synthesis of 1,8-diazaanthracenes as building blocks for internally
 functionalized aromatic oligoamide foldamers.
;
_journal_issue                   5
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              2115
_journal_page_last               2122
_journal_paper_doi               10.1021/jo402852m
_journal_volume                  79
_journal_year                    2014
_chemical_formula_sum            'C25 H28 Br Cl3 N2 O6'
_chemical_formula_weight         638.75
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           'CrystalClear-SM Expert 2.1 b25 (Rigaku, 2013)'
_cell_angle_alpha                90.00
_cell_angle_beta                 92.257(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.965(3)
_cell_length_b                   9.4631(16)
_cell_length_c                   19.478(4)
_cell_measurement_reflns_used    4619
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      72.28
_cell_measurement_theta_min      6.53
_cell_volume                     2756.2(9)
_computing_cell_refinement       'CrystalClear-SM Expert 2.1 b25 (Rigaku, 2013)'
_computing_data_collection       'CrystalClear-SM Expert 2.1 b25 (Rigaku, 2013)'
_computing_data_reduction        'CrystalClear-SM Expert 2.1 b25 (Rigaku, 2013)'
_computing_structure_refinement  'SHELXL (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 PILT
_diffrn_detector_area_resol_mean 5.8140
_diffrn_measured_fraction_theta_full 0.968
_diffrn_measured_fraction_theta_max 0.968
_diffrn_measurement_device       'AFC11 (Right): Eulerian 3 circle'
_diffrn_measurement_device_type  'Rigaku PILATUS conversion'
_diffrn_measurement_method       'profile data from \w-scans'
_diffrn_radiation_monochromator  Confocal
_diffrn_radiation_source         'Rotating Anode'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54190
_diffrn_reflns_av_R_equivalents  0.0664
_diffrn_reflns_av_sigmaI/netI    0.0619
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            14708
_diffrn_reflns_theta_full        72.28
_diffrn_reflns_theta_max         72.28
_diffrn_reflns_theta_min         6.53
_exptl_absorpt_coefficient_mu    5.073
_exptl_absorpt_correction_T_max  0.7178
_exptl_absorpt_correction_T_min  0.4457
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'CrystalClear-SM Expert 2.1 b25 (Rigaku, 2013)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.539
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1304
_exptl_crystal_size_max          0.19
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.07
_refine_diff_density_max         2.228
_refine_diff_density_min         -1.097
_refine_diff_density_rms         0.120
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     340
_refine_ls_number_reflns         5268
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0566
_refine_ls_R_factor_gt           0.0527
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0845P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1362
_refine_ls_wR_factor_ref         0.1419
_reflns_number_gt                4619
_reflns_number_total             5268
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo402852m_si_007.cif
_cod_data_source_block           shelxl
_cod_original_cell_volume        2756.3(9)
_cod_original_sg_symbol_H-M      P21/n
_cod_database_code               4029127