<i>N</i>'-[(1<i>E</i>,2<i>E</i>)-3,7-Dimethylocta-2,6-dien-1-ylidene]pyridine-4-carbohydrazide
Bhat, Mashooq A.; Abdel-Aziz, Hatem A.; Ghabbour, Hazem A.; Hemamalini, Madhukar; Fun, Hoong-Kun; Acta Crystallographica Section E 68 (2012) o1144–o1145; doi:10.1107/S1600536812009075

data_2234315
_publ_section_title
;
 <i>N</i>'-[(1<i>E</i>,2<i>E</i>)-3,7-Dimethylocta-2,6-dien-1-ylidene]pyridine-4-carbohydrazide
;
_journal_coeditor_code           LH5421
_journal_issue                   4
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1144
_journal_page_last               o1145
_journal_paper_doi               10.1107/S1600536812009075
_journal_volume                  68
_journal_year                    2012
_chemical_formula_iupac          'C16 H21 N3 O'
_chemical_formula_moiety         'C16 H21 N3 O'
_chemical_formula_sum            'C16 H21 N3 O'
_chemical_formula_weight         271.36
_chemical_name_systematic
;
<i>N</i>'-[(1<i>E</i>,2<i>E</i>)-3,7-Dimethylocta-2,6-dien-1-ylidene]pyridine-
4-carbohydrazide
;
_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   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 101.854(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   17.5415(8)
_cell_length_b                   12.0708(6)
_cell_length_c                   7.8430(4)
_cell_measurement_reflns_used    1053
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      69.52
_cell_measurement_theta_min      11.34
_cell_volume                     1625.26(14)
_computing_cell_refinement       'SAINT (Bruker, 2009)'
_computing_data_collection       'APEX2 (Bruker, 2009)'
_computing_data_reduction        'SAINT (Bruker, 2009)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material
'SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009)'
_computing_structure_refinement  'SHELXTL (Sheldrick, 2008)'
_computing_structure_solution    'SHELXTL (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.973
_diffrn_measured_fraction_theta_max 0.973
_diffrn_measurement_device_type
;
Bruker SMART APEXII CCD area-detector
;
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0270
_diffrn_reflns_av_sigmaI/netI    0.0193
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            16548
_diffrn_reflns_theta_full        69.68
_diffrn_reflns_theta_max         69.68
_diffrn_reflns_theta_min         5.15
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.560
_exptl_absorpt_correction_T_max  0.9118
_exptl_absorpt_correction_T_min  0.6327
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2009)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.109
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             584
_exptl_crystal_size_max          0.90
_exptl_crystal_size_mid          0.27
_exptl_crystal_size_min          0.17
_refine_diff_density_max         0.134
_refine_diff_density_min         -0.143
_refine_ls_extinction_coef       0.0032(6)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXTL (Sheldrick, 2008)'
_refine_ls_goodness_of_fit_ref   1.034
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     239
_refine_ls_number_reflns         2978
_refine_ls_number_restraints     12
_refine_ls_restrained_S_all      1.037
_refine_ls_R_factor_all          0.0606
_refine_ls_R_factor_gt           0.0494
_refine_ls_shift/su_max_lt       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^)+(0.0826P)^2^+0.2272P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1416
_refine_ls_wR_factor_ref         0.1542
_reflns_number_gt                2376
_reflns_number_total             2978
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            lh5421.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2234315
_cod_database_fobs_code          2234315