Mutual Interference between Intramolecular Proton Transfer Sites through the Adjoining π-Conjugated System in Schiff Bases of Double-Headed, Fused Salicylaldehydes
Hirohiko Houjou; Hajime Shingai; Keisuke Yagi; Isao Yoshikawa; Koji Araki; Journal of Organic Chemistry 78 (2013) 9021–9031; doi:10.1021/jo401108z

data_4028587
_publ_section_title
;
 Mutual Interference between Intramolecular Proton Transfer Sites through
 the Adjoining \p-Conjugated System in Schiff Bases of Double-Headed,
 Fused Salicylaldehydes
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              9021
_journal_page_last               9031
_journal_paper_doi               10.1021/jo401108z
_journal_volume                  78
_journal_year                    2013
_chemical_formula_moiety         'C28 H42 N2 O2'
_chemical_formula_sum            'C28 H42 N2 O2'
_chemical_formula_weight         438.64
_chemical_name_common
1,5-bis(octyliminomethyl)-2,6-dihydroxynaphthalene
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 99.408(14)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   49.85(5)
_cell_length_b                   4.657(5)
_cell_length_c                   10.848(11)
_cell_measurement_reflns_used    7380
_cell_measurement_temperature    93(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      3.31
_cell_volume                     2485(4)
_computing_cell_refinement       'CrystalClear-SM Expert 2.0 r3'
_computing_data_collection       'CrystalClear-SM Expert 2.0 r3 (Rigaku, 2009)'
_computing_data_reduction        'CrystalClear-SM Expert 2.0 r3'
_computing_molecular_graphics    'CrystalStructure 4.0'
_computing_publication_material  'CrystalStructure 4.0 (Rigaku, 2010)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      93(2)
_diffrn_detector_area_resol_mean 29.257
_diffrn_measured_fraction_theta_full 0.912
_diffrn_measured_fraction_theta_max 0.912
_diffrn_measurement_device_type  'Rigaku Varimax DW with Saturn'
_diffrn_measurement_method       \w
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0387
_diffrn_reflns_av_sigmaI/netI    0.0557
_diffrn_reflns_limit_h_max       63
_diffrn_reflns_limit_h_min       -63
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            7380
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.31
_diffrn_standards_decay_%        none
_diffrn_standards_interval_count none
_diffrn_standards_interval_time  none
_diffrn_standards_number         none
_exptl_absorpt_coefficient_mu    0.073
_exptl_absorpt_correction_T_max  0.9928
_exptl_absorpt_correction_T_min  0.9715
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'NUMABS (Rigaku, 1999)'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.173
_exptl_crystal_description       needle
_exptl_crystal_F_000             960
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.242
_refine_diff_density_min         -0.241
_refine_diff_density_rms         0.054
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.083
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     150
_refine_ls_number_reflns         2586
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.083
_refine_ls_R_factor_all          0.0814
_refine_ls_R_factor_gt           0.0534
_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^)+(0.0622P)^2^+1.9005P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1312
_refine_ls_wR_factor_ref         0.1569
_reflns_number_gt                1707
_reflns_number_total             2586
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo401108z_si_003.cif
_cod_data_source_block           15oct
_cod_database_code               4028587