Isostructuralism among `bridge-flipped' isomeric benzylideneanilines and phenylhydrazones
Ojala, William H.; Smieja, Jonathan M.; Spude, Jill M.; Arola, Trina M.; Kuspa, Marika K.; Herrera, Nell; Ojala, Charles R.; Acta Crystallographica Section B 63 (2007) 485–496; doi:10.1107/S0108768107018034

data_2102831
_publ_section_title
;
 Isostructuralism among `bridge-flipped' isomeric benzylideneanilines
 and phenylhydrazones
;
_journal_coeditor_code           GP5015
_journal_issue                   3
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              485
_journal_page_last               496
_journal_paper_doi               10.1107/S0108768107018034
_journal_volume                  63
_journal_year                    2007
_chemical_formula_moiety         'C15 H12 N2'
_chemical_formula_sum            'C15 H12 N2'
_chemical_formula_weight         220.27
_chemical_melting_point          .129E-128
_chemical_name_systematic
;
  N-(4-methylbenzylidene)-4-cyanoaniline
;
_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                 92.285(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.1535(9)
_cell_length_b                   7.1990(10)
_cell_length_c                   26.253(4)
_cell_measurement_reflns_used    2898
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      25.001
_cell_measurement_theta_min      2.934
_cell_volume                     1162.1(3)
_computing_cell_refinement       'SAINT, Bruker'
_computing_data_collection       'SMART, Bruker'
_computing_data_reduction        'SAINT, Bruker'
_computing_molecular_graphics    'PLATON (Spek, 2003)'
_computing_publication_material  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Siemens SMART Platform CCD'
_diffrn_measurement_method       'area detector, omega scans per phi'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0234
_diffrn_reflns_av_sigmaI/netI    0.0166
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            10066
_diffrn_reflns_theta_full        25.04
_diffrn_reflns_theta_max         25.04
_diffrn_reflns_theta_min         1.55
_exptl_absorpt_coefficient_mu    0.075
_exptl_absorpt_correction_T_max  0.993
_exptl_absorpt_correction_T_min  0.960
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Blessing, 1995)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.259
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             464
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.48
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.112
_refine_diff_density_min         -0.144
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.062
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     155
_refine_ls_number_reflns         2062
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.062
_refine_ls_R_factor_all          0.0467
_refine_ls_R_factor_gt           0.0369
_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^)+(0.0412P)^2^+0.2659P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0884
_refine_ls_wR_factor_ref         0.0931
_reflns_number_gt                1727
_reflns_number_total             2062
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            gp5015.cif
_cod_data_source_block           VII
_cod_database_code               2102831