<i>N</i>,<i>N</i>,<i>N</i>',<i>N</i>'-Tetraethylnaphthalene-1,4-dicarboxamide
Lin-Hai Jing; Li-Mei Zhou; Da-Bin Qin; Acta Crystallographica Section E 63 (2007) o4273–o4273; doi:10.1107/S1600536807048544

data_2215865
_publ_section_title
<i>N</i>,<i>N</i>,<i>N</i>',<i>N</i>'-Tetraethylnaphthalene-1,4-dicarboxamide
_journal_coeditor_code           CV2315
_journal_issue                   11
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o4273
_journal_page_last               o4273
_journal_paper_doi               10.1107/S1600536807048544
_journal_volume                  63
_journal_year                    2007
_chemical_formula_iupac          'C20 H26 N2 O2'
_chemical_formula_moiety         'C20 H26 N2 O2'
_chemical_formula_sum            'C20 H26 N2 O2'
_chemical_formula_weight         326.43
_chemical_name_systematic
;
N,N,N',N'-Tetraethylnaphthalene-1,4-dicarboxamide
;
_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                 107.293(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   23.1133(14)
_cell_length_b                   12.6202(8)
_cell_length_c                   12.9917(9)
_cell_measurement_reflns_used    13310
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      27.49
_cell_measurement_theta_min      3.21
_cell_volume                     3618.3(4)
_computing_cell_refinement       'RAPID-AUTO (Rigaku, 2004)'
_computing_data_collection       'RAPID-AUTO (Rigaku, 2004)'
_computing_data_reduction        'RAPID-AUTO (Rigaku, 2004)'
_computing_molecular_graphics    'XP in SHELXTL (Bruker, 1997)'
_computing_publication_material  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      153(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Rigaku R-AXIS RAPID'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Rotating Anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0200
_diffrn_reflns_av_sigmaI/netI    0.0179
_diffrn_reflns_limit_h_max       30
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            16253
_diffrn_reflns_theta_full        27.47
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         3.20
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.077
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.198
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1408
_exptl_crystal_size_max          0.58
_exptl_crystal_size_mid          0.52
_exptl_crystal_size_min          0.51
_refine_diff_density_max         0.266
_refine_diff_density_min         -0.190
_refine_ls_extinction_coef       0.0060(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 1997)'
_refine_ls_goodness_of_fit_ref   1.005
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     232
_refine_ls_number_reflns         4142
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.005
_refine_ls_R_factor_all          0.0445
_refine_ls_R_factor_gt           0.0386
_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^)+(0.0636P)^2^+1.926P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1102
_refine_ls_wR_factor_ref         0.1169
_reflns_number_gt                3595
_reflns_number_total             4142
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            cv2315.cif
_cod_data_source_block           I
_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:

'_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_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               2215865
_cod_database_fobs_code          2215865