4-(4-Chlorobenzylidenehydrazonomethyl)benzonitrile and the bromo and iodo analogs
Ojala, Charles R.; Ojala, William H.; Britton, Doyle; Acta Crystallographica Section C 64 (2008) o37–o40; doi:10.1107/S0108270107065171

data_2016466
_publ_section_title
;
 4-(4-Chlorobenzylidenehydrazonomethyl)benzonitrile and the bromo and
 iodo analogs
;
_journal_coeditor_code           TR3028
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o37
_journal_page_last               o40
_journal_paper_doi               10.1107/S0108270107065171
_journal_volume                  64
_journal_year                    2008
_chemical_formula_iupac          'C15 H10 Cl N3'
_chemical_formula_moiety         'C15 H10 Cl N3'
_chemical_formula_sum            'C15 H10 Cl N3'
_chemical_formula_weight         267.71
_chemical_name_systematic
;
4-(4-Chlorobenzylidenehydrazono)benzonitrile
;
_space_group_IT_number           7
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P -2yc'
_symmetry_space_group_name_H-M   'P 1 c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXTL
_cell_angle_alpha                90.00
_cell_angle_beta                 91.151(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   3.8276(5)
_cell_length_b                   7.1042(9)
_cell_length_c                   23.238(3)
_cell_measurement_reflns_used    3072
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      28.2
_cell_measurement_theta_min      2.8
_cell_volume                     631.76(14)
_computing_cell_refinement       'SAINT (Bruker, 2002)'
_computing_data_collection       'SMART (Bruker, 2002)'
_computing_data_reduction        'SAINT (Bruker, 2002)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 1997)'
_computing_publication_material  'SHELXTL (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXTL (Sheldrick, 1997)'
_computing_structure_solution    'SHELXTL (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type
;
Bruker SMART 1K CCD area-detector diffractometer
;
_diffrn_measurement_method       '\w 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  0.025
_diffrn_reflns_av_sigmaI/netI    0.033
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            7125
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.75
_diffrn_standards_decay_%        'less than 1'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.290
_exptl_absorpt_correction_T_max  0.98
_exptl_absorpt_correction_T_min  0.93
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
(SADABS; Sheldrick, 2003; Blessing, 1995)
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.407
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             276
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.53
_refine_diff_density_min         -0.60
_refine_ls_abs_structure_details 'Flack (1983), 1369 Friedel pairs'
_refine_ls_abs_structure_Flack   0.4(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.064
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     129
_refine_ls_number_reflns         2818
_refine_ls_number_restraints     10
_refine_ls_restrained_S_all      1.063
_refine_ls_R_factor_all          0.082
_refine_ls_R_factor_gt           0.066
_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^)+(0.062P)^2^+0.650P]
 where P=(Fo^2^+2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.153
_refine_ls_wR_factor_ref         0.162
_reflns_number_gt                2207
_reflns_number_total             2818
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            tr3028.cif
_cod_data_source_block           Cl-A
_cod_original_sg_symbol_H-M      'P c'
_cod_database_code               2016466
_cod_database_fobs_code          2016466