A new polymorph of <i>N</i>,<i>N</i>-dibenzylaniline
Tong, Hong-Bo; Zhou, Mei-Su; Bi, Quan-Xi; Chao, Jian-Bin; Acta Crystallographica Section E 63 (2007) o4560–o4560; doi:10.1107/S1600536807054402

data_2216379
_publ_section_title
;
 A new polymorph of <i>N</i>,<i>N</i>-dibenzylaniline
;
_journal_coeditor_code           CV2328
_journal_issue                   12
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o4560
_journal_page_last               o4560
_journal_paper_doi               10.1107/S1600536807054402
_journal_volume                  63
_journal_year                    2007
_chemical_formula_iupac          'C20 H19 N'
_chemical_formula_moiety         'C20 H19 N'
_chemical_formula_sum            'C20 H19 N'
_chemical_formula_weight         273.36
_chemical_name_systematic
;
N,N-dibenzylaniline
;
_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   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 91.245(13)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.061(4)
_cell_length_b                   11.529(6)
_cell_length_c                   17.065(9)
_cell_measurement_reflns_used    1210
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      19.97
_cell_measurement_theta_min      2.38
_cell_volume                     1585.6(14)
_computing_cell_refinement       'SAINT (Siemens, 1996)'
_computing_data_collection       'SMART (Siemens, 1996)'
_computing_data_reduction        'SAINT (Siemens, 1996)'
_computing_molecular_graphics    'ORTEP3 (Farrugia, 1997)'
_computing_publication_material  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Siemens SMART CCD area detector'
_diffrn_measurement_method       \w
_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  0.0349
_diffrn_reflns_av_sigmaI/netI    0.0491
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            6429
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.13
_diffrn_standards_decay_%        4.53
_exptl_absorpt_coefficient_mu    0.066
_exptl_absorpt_correction_T_max  0.9869
_exptl_absorpt_correction_T_min  0.9805
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.145
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             584
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.219
_refine_diff_density_min         -0.156
_refine_ls_extinction_coef       0.014(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.080
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     191
_refine_ls_number_reflns         2797
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.080
_refine_ls_R_factor_all          0.1051
_refine_ls_R_factor_gt           0.0691
_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^)+(0.0581P)^2^+0.3456P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1448
_refine_ls_wR_factor_ref         0.1601
_reflns_number_gt                1858
_reflns_number_total             2797
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cv2328.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      'P 21/n'
_cod_database_code               2216379
_cod_database_fobs_code          2216379