Naphthalene proton sponges as hydride donors: diverse appearances of the tert-amino-effect.
Pozharskii, Alexander F.; Povalyakhina, Maria A.; Degtyarev, Alexander V.; Ryabtsova, Oxana V.; Ozeryanskii, Valery A.; Dyablo, Olga V.; Tkachuk, Anna V.; Kazheva, Olga N.; Chekhlov, Anatolii N.; Dyachenko, Oleg A.; Organic & biomolecular chemistry 9 (2011) 1887–1900; doi:10.1039/C0OB00899K

data_7151715
_publ_section_title
;
 Naphthalene proton sponges as hydride donors: diverse appearances of
 the tert-amino-effect.
;
_journal_issue                   6
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              1887
_journal_page_last               1900
_journal_paper_doi               10.1039/C0OB00899K
_journal_volume                  9
_journal_year                    2011
_chemical_formula_moiety         'C20 H32 N4'
_chemical_formula_sum            'C20 H32 N4'
_chemical_formula_weight         328.50
_space_group_IT_number           7
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P -2yc'
_symmetry_space_group_name_H-M   'P 1 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                 92.8910(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            6
_cell_length_a                   34.582(2)
_cell_length_b                   10.1577(6)
_cell_length_c                   8.3390(5)
_cell_measurement_reflns_used    819
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      27
_cell_measurement_theta_min      3
_cell_volume                     2925.5(3)
_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      295(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_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  0.0344
_diffrn_reflns_av_sigmaI/netI    0.0508
_diffrn_reflns_limit_h_max       44
_diffrn_reflns_limit_h_min       -44
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            29486
_diffrn_reflns_theta_full        27.00
_diffrn_reflns_theta_max         27.00
_diffrn_reflns_theta_min         1.77
_exptl_absorpt_coefficient_mu    0.067
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            'pale yellow'
_exptl_crystal_density_diffrn    1.119
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1080
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.156
_refine_diff_density_min         -0.130
_refine_diff_density_rms         0.027
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.6(17)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.012
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     673
_refine_ls_number_reflns         12592
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.012
_refine_ls_R_factor_all          0.1034
_refine_ls_R_factor_gt           0.0464
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0345P)^2^+0.2100P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0870
_refine_ls_wR_factor_ref         0.1043
_reflns_number_gt                7117
_reflns_number_total             12592
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            C0OB00899K.TXT
_cod_data_source_block           fin
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1555 2011-01-17 13:19:09Z saulius 
;
_cod_original_sg_symbol_H-M      'P c'
_cod_database_code               7151715