Torsional vibration and central bond length of <i>N</i>-benzylideneanilines
Harada, Jun; Harakawa, Mayuko; Ogawa, Keiichiro; Acta Crystallographica Section B 60 (2004) 578–588; doi:10.1107/S0108768104016532

data_2102589
_publ_section_title
;
 Torsional vibration and central bond length of
 <i>N</i>-benzylideneanilines
;
_journal_issue                   5
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              578
_journal_page_last               588
_journal_paper_doi               10.1107/S0108768104016532
_journal_volume                  60
_journal_year                    2004
_chemical_formula_sum            'C14 H12 N2 O2'
_chemical_formula_weight         240.26
_chemical_melting_point          408.85
_chemical_name_systematic
;
N-(4-methylbenzylidene)-4-nitroaniline
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 123.3700(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.4449(13)
_cell_length_b                   7.1070(5)
_cell_length_c                   12.6557(9)
_cell_measurement_reflns_used    6799
_cell_measurement_temperature    90
_cell_measurement_theta_max      30.0
_cell_measurement_theta_min      3.2
_cell_volume                     1160.15(15)
_computing_cell_refinement       'SAINT (Bruker, 1998)'
_computing_data_collection       'SMART (Bruker, 1998)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'SHELXTL (Bruker, 2000)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      90
_diffrn_detector_area_resol_mean 8.192
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker SMART 1000 CCD diffractometer'
_diffrn_measurement_method       \w_scan
_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  0.0186
_diffrn_reflns_av_sigmaI/netI    0.0154
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            15616
_diffrn_reflns_theta_full        30.02
_diffrn_reflns_theta_max         30.02
_diffrn_reflns_theta_min         3.16
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.094
_exptl_absorpt_correction_T_max  0.9962
_exptl_absorpt_correction_T_min  0.9457
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2002)'
_exptl_crystal_colour            'pale yellow'
_exptl_crystal_density_diffrn    1.376
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             504
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.56
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.448
_refine_diff_density_min         -0.165
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.049
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     219
_refine_ls_number_reflns         3365
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.049
_refine_ls_R_factor_all          0.0476
_refine_ls_R_factor_gt           0.0368
_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^)+(0.0626P)^2^+0.3251P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1004
_refine_ls_wR_factor_ref         0.1095
_reflns_number_gt                2780
_reflns_number_total             3365
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            bk5007.cif
_cod_data_source_block           3_90K
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '135.7_C' was changed to '408.85' -
it was converted from degrees Celsius(C) to Kelvins(K).

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 

The following automatic conversions were performed:

'_chemical_melting_point' value '135.7_C' was changed to '408.85' -
it was converted from degrees Celsius(C) to Kelvins(K).

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P_1_21/c_1
_cod_database_code               2102589
_cod_database_fobs_code          2102589