Molecular structure of 5,6-bis(dimethylamino)acenaphthene, 5,6-bis(dimethylamino)acenaphthylene, and their monohydrobromides: a comparison with some naphthalene proton sponges
Pozharskii, Alexander F.; Ozeryanskii, Valery A.; Starikova, Zoya A.; Journal of the Chemical Society, Perkin Transactions 2  (2002) 318–; doi:10.1039/b106725g

data_7204985
_publ_section_title
;
 Molecular structure of 5,6-bis(dimethylamino)acenaphthene,
 5,6-bis(dimethylamino)acenaphthylene, and their monohydrobromides: a
 comparison with some naphthalene proton sponges
;
_journal_issue                   2
_journal_name_full
'Journal of the Chemical Society, Perkin Transactions 2'
_journal_page_first              318
_journal_paper_doi               10.1039/b106725g
_journal_year                    2002
_chemical_formula_sum            'C16 H18 N2'
_chemical_formula_weight         238.32
_chemical_name_systematic
; 
? 
;
_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   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 99.313(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.0694(8)
_cell_length_b                   12.1428(11)
_cell_length_c                   12.0763(11)
_cell_measurement_temperature    200(2)
_cell_volume                     1312.4(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'SHELXTL PLUS 5'
_computing_publication_material  'SHELXTL PLUS 5'
_computing_structure_refinement  'SHELXTL PLUS 5'
_computing_structure_solution    'SHELXTL PLUS 5'
_diffrn_ambient_temperature      200(2)
_diffrn_measurement_method       'phi and 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  0.0287
_diffrn_reflns_av_sigmaI/netI    0.0478
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            10340
_diffrn_reflns_theta_max         30.04
_diffrn_reflns_theta_min         2.39
_exptl_absorpt_coefficient_mu    0.071
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.206
_exptl_crystal_description       plate
_exptl_crystal_F_000             512
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.4
_exptl_crystal_size_min          0.5
_refine_diff_density_max         0.232
_refine_diff_density_min         -0.136
_refine_diff_density_rms         0.039
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   0.744
_refine_ls_goodness_of_fit_obs   0.916
_refine_ls_hydrogen_treatment    isotropic
_refine_ls_matrix_type           full
_refine_ls_number_parameters     235
_refine_ls_number_reflns         3742
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.790
_refine_ls_restrained_S_obs      0.916
_refine_ls_R_factor_all          0.0972
_refine_ls_R_factor_obs          0.0500
_refine_ls_shift/esd_max         0.018
_refine_ls_shift/esd_mean        0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1506
_refine_ls_wR_factor_obs         0.1229
_reflns_number_observed          1926
_reflns_number_total             3774
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            b106725g.txt
_cod_data_source_block           trom
_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 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               7204985