1,8,1',8'-Tetrakis(dimethylamino)-2,2'-dinaphthylmethanols: Double In/Out Proton Sponges with Low-Barrier Hydrogen-Bond Switching
Alexander F. Pozharskii; Alexander V. Degtyarev; Valery A. Ozeryanskii; Oksana V. Ryabtsova; Zoya A. Starikova; Gennadii S. Borodkin; Journal of Organic Chemistry 75 (2010) 4706–4715; doi:10.1021/jo100384s

data_4025530
_publ_section_title
;
 1,8,1',8'-Tetrakis(dimethylamino)-2,2'-dinaphthylmethanols: Double In/Out
 Proton Sponges with Low-Barrier Hydrogen-Bond Switching
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              4706
_journal_page_last               4715
_journal_paper_doi               10.1021/jo100384s
_journal_volume                  75
_journal_year                    2010
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C29 H36 N4 O'
_chemical_formula_sum            'C29 H36 N4 O'
_chemical_formula_weight         456.62
_space_group_IT_number           1
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  'P 1'
_symmetry_space_group_name_H-M   'P 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                93.652(3)
_cell_angle_beta                 110.835(3)
_cell_angle_gamma                94.013(4)
_cell_formula_units_Z            2
_cell_length_a                   9.9285(17)
_cell_length_b                   10.4828(17)
_cell_length_c                   13.090(2)
_cell_measurement_reflns_used    335
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26
_cell_measurement_theta_min      3
_cell_volume                     1264.4(4)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX II'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'Bruker APEX II CCD area detector''
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0432
_diffrn_reflns_av_sigmaI/netI    0.0711
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            17800
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         1.67
_exptl_absorpt_coefficient_mu    0.074
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.199
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             492
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.661
_refine_diff_density_min         -0.288
_refine_diff_density_rms         0.069
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.018
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     625
_refine_ls_number_reflns         8748
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.018
_refine_ls_R_factor_all          0.1176
_refine_ls_R_factor_gt           0.0913
_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^)+(0.0008P)^2^+3.4935P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1778
_refine_ls_wR_factor_ref         0.1924
_reflns_number_gt                6640
_reflns_number_total             8748
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            jo100384s_si_003.cif
_cod_data_source_block           fi
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_original_sg_symbol_Hall     '1 P'
_cod_database_code               4025530