Five <i>N</i>'-benzylidene-<i>N</i>-methylpyrazine-2-carbohydrazides
Gomes, Ligia R.; Low, John Nicolson; Rodrigues, Ana S. M. C.; Wardell, James L.; da Lima, Camillo H.; de Souza, Marcus V. N.; Acta Crystallographica Section C 69 (2013) 549–555; doi:10.1107/S0108270113010056

data_2018996
_publ_section_title
;
 Five <i>N</i>'-benzylidene-<i>N</i>-methylpyrazine-2-carbohydrazides
;
_journal_coeditor_code           SK3484
_journal_issue                   5
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              549
_journal_page_last               555
_journal_paper_doi               10.1107/S0108270113010056
_journal_volume                  69
_journal_year                    2013
_chemical_formula_iupac          'C13 H12 N4 O'
_chemical_formula_moiety         'C13 H12 N4 O'
_chemical_formula_sum            'C13 H12 N4 O'
_chemical_formula_weight         240.27
_chemical_name_common
;
Benzaldehyde methyl(pyrazin-2-ylcarbonyl)hydrazone
;
_chemical_name_systematic
;
<i>N</i>'-Benzylidene-<i>N</i>-methylpyrazine-2-carbohydrazide
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL97
_cell_angle_alpha                73.421(5)
_cell_angle_beta                 84.844(6)
_cell_angle_gamma                88.530(6)
_cell_formula_units_Z            2
_cell_length_a                   7.4961(3)
_cell_length_b                   7.6923(3)
_cell_length_c                   10.8821(7)
_cell_measurement_reflns_used    6254
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.4
_cell_measurement_theta_min      3.2
_cell_volume                     598.97(5)
_computing_cell_refinement       'CrystalClear-SM Expert (Rigaku, 2011)'
_computing_data_collection       'CrystalClear-SM Expert (Rigaku, 2011)'
_computing_data_reduction        'CrystalClear-SM Expert (Rigaku, 2011)'
_computing_molecular_graphics    'PLATON (Spek, 2009)'
_computing_publication_material
;
OSCAIL (McArdle <i>et al.</i>, 2004) and SHELXL97 (Sheldrick,
2008)
;
_computing_structure_refinement
;
OSCAIL (McArdle <i>et al.</i>, 2004) and SHELXL97 (Sheldrick,
2008)
;
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      120
_diffrn_detector_area_resol_mean 10.0000
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device       'Crystal goniometer'
_diffrn_measurement_device_type  'Rigaku R-AXIS conversion'
_diffrn_measurement_method       'profile data from \w-scans'
_diffrn_radiation_monochromator  'Graphite monochromator'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0158
_diffrn_reflns_av_sigmaI/netI    0.0179
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            7672
_diffrn_reflns_theta_full        27.45
_diffrn_reflns_theta_max         27.45
_diffrn_reflns_theta_min         3.22
_exptl_absorpt_coefficient_mu    0.089
_exptl_absorpt_correction_T_max  0.9797
_exptl_absorpt_correction_T_min  0.9516
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(CrystalClear-SM Expert; Rigaku, 2011)'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.332
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             252
_exptl_crystal_size_max          0.56
_exptl_crystal_size_mid          0.43
_exptl_crystal_size_min          0.23
_refine_diff_density_max         0.306
_refine_diff_density_min         -0.209
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.173
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     164
_refine_ls_number_reflns         2712
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.173
_refine_ls_R_factor_all          0.0420
_refine_ls_R_factor_gt           0.0355
_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^)+(0.0656P)^2^+0.0688P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1110
_refine_ls_wR_factor_ref         0.1187
_reflns_number_gt                2270
_reflns_number_total             2712
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            sk3484.cif
_cod_data_source_block           IIa
_cod_database_code               2018996
_cod_database_fobs_code          2018996