Green chemistry synthesis: 2-amino-3-[(<i>E</i>)-(2-pyridyl)methylideneamino]but-2-enedinitrile monohydrate and 5-cyano-2-(2-pyridyl)-1-(2-pyridylmethyl)-1<i>H</i>-imidazole-4-carboxamide
Altaf, Muhammad; Stoeckli-Evans, Helen; Acta Crystallographica Section C 66 (2010) o441–o445; doi:10.1107/S0108270110029021

data_2017788
_publ_section_title
;
 Green chemistry synthesis:
 2-amino-3-[(<i>E</i>)-(2-pyridyl)methylideneamino]but-2-enedinitrile
 monohydrate and
 5-cyano-2-(2-pyridyl)-1-(2-pyridylmethyl)-1<i>H</i>-imidazole-4-carboxamide
;
_journal_coeditor_code           BM3095
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o441
_journal_page_last               o445
_journal_paper_doi               10.1107/S0108270110029021
_journal_volume                  66
_journal_year                    2010
_chemical_formula_iupac          'C16 H12 N6 O'
_chemical_formula_moiety         'C16 H12 N6 O'
_chemical_formula_sum            'C16 H12 N6 O'
_chemical_formula_weight         304.32
_chemical_name_systematic
;
5-cyano-2-(2-pyridyl)-1-(2-pyridylmethyl)-1<i>H</i>-imidazole-4-carboxamide
;
_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           SHELXL97
_cell_angle_alpha                90.00
_cell_angle_beta                 114.503(8)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.5730(11)
_cell_length_b                   7.0457(5)
_cell_length_c                   21.261(2)
_cell_measurement_reflns_used    22793
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      29.63
_cell_measurement_theta_min      2.10
_cell_volume                     1441.2(2)
_computing_cell_refinement       'X-AREA (Version 1.23; Stoe & Cie, 2009)'
_computing_data_collection       'X-AREA (Version 1.23; Stoe & Cie, 2009)'
_computing_data_reduction        'X-RED32 (Version 1.05; Stoe & Cie, 2009)'
_computing_molecular_graphics
;
PLATON (Spek, 2009) and Mercury (Macrae <i>et al.</i>, 2006)
;
_computing_publication_material
;
SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009)
;
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device       'two-circle image plate diffractometer'
_diffrn_measurement_device_type  'Stoe IPDS-2'
_diffrn_measurement_method       '\f + \w rotation'
_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  0.0304
_diffrn_reflns_av_sigmaI/netI    0.0181
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            26827
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         29.31
_diffrn_reflns_theta_min         2.11
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.095
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.403
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             632
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.45
_exptl_crystal_size_min          0.40
_refine_diff_density_max         0.303
_refine_diff_density_min         -0.208
_refine_ls_extinction_coef       0.016(3)
_refine_ls_extinction_expression 'Fc* = kFc[1+0.001Fc^2^\l^3^/sin(2\q)]^-1/4^'
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 2008)'
_refine_ls_goodness_of_fit_ref   1.037
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     215
_refine_ls_number_reflns         3903
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.037
_refine_ls_R_factor_all          0.0433
_refine_ls_R_factor_gt           0.0365
_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^)+(0.0468P)^2^+0.3810P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0906
_refine_ls_wR_factor_ref         0.0954
_reflns_number_gt                3413
_reflns_number_total             3903
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            bm3095.cif
_cod_data_source_block           L2-I
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2017788
_cod_database_fobs_code          2017788