Synthesis and Conformational Analysis of Alternately N-Alkylated Aromatic Amide Oligomers.
Urushibara, Ko; Masu, Hyuma; Mori, Hirotoshi; Azumaya, Isao; Hirano, Tomoya; Kagechika, Hiroyuki; Tanatani, Aya; The Journal of organic chemistry 83 (2018) 14338–14349; doi:10.1021/acs.joc.8b02045

data_4035701
_publ_section_title
;
 Synthesis and Conformational Analysis of Alternately N-Alkylated Aromatic
 Amide Oligomers.
;
_journal_issue                   23
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              14338
_journal_page_last               14349
_journal_paper_doi               10.1021/acs.joc.8b02045
_journal_volume                  83
_journal_year                    2018
_chemical_formula_sum            'C31 H26 N4 O7'
_chemical_formula_weight         566.56
_chemical_name_common            131129mis1
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_cell_angle_alpha                90
_cell_angle_beta                 91.195(3)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   39.031(6)
_cell_length_b                   5.6480(9)
_cell_length_c                   23.048(4)
_cell_measurement_reflns_used    3873
_cell_measurement_temperature    93
_cell_measurement_theta_max      27.4503
_cell_measurement_theta_min      2.7075
_cell_volume                     5079.8(14)
_computing_cell_refinement       'SAINT V8.34A (Bruker AXS Inc., 2013)'
_computing_data_collection       'APEX2 (Bruker AXS, 2006)'
_computing_data_reduction        'SAINT V8.34A (Bruker AXS Inc., 2013)'
_computing_molecular_graphics    'XSHEL (Bruker AXS,2002)'
_computing_publication_material  'XCIF (Bruker AXS, 2001)'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      93
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker APEXII Ultra CCD area detector'
_diffrn_measurement_method       'Phi and Omega scans'
_diffrn_radiation_monochromator  'Bruker Helios multilayer confocal mirror'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0475
_diffrn_reflns_av_unetI/netI     0.0628
_diffrn_reflns_limit_h_max       31
_diffrn_reflns_limit_h_min       -50
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            15653
_diffrn_reflns_theta_full        27.488
_diffrn_reflns_theta_max         27.488
_diffrn_reflns_theta_min         1.044
_diffrn_source                   'rotating-anode X-ray tube'
_diffrn_source_type              'Bruker Tourbo X-ray Source'
_exptl_absorpt_coefficient_mu    0.107
_exptl_absorpt_correction_T_max  1.00
_exptl_absorpt_correction_T_min  0.85
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SADABS (Sheldrick 1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.482
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             2368
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.050
_exptl_crystal_size_min          0.020
_refine_diff_density_max         2.490
_refine_diff_density_min         -0.603
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.490
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     382
_refine_ls_number_reflns         5823
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.490
_refine_ls_R_factor_all          0.1604
_refine_ls_R_factor_gt           0.1419
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.2000P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.3482
_refine_ls_wR_factor_ref         0.3646
_reflns_number_gt                4543
_reflns_number_total             5823
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo8b02045_si_003.cif
_cod_data_source_block           I
_cod_database_code               4035701
_shelx_res_checksum              983
_shelx_hkl_checksum              51838