Mechanisms of reactions conducted on α-amido-α-aminonitrones, determined based on the structures of their crystalline products and DFT calculations
Trzewik, Bartosz; Seidler, Tomasz; Brocławik, Ewa; Stadnicka, Katarzyna; New Journal of Chemistry 34 (2010) 2220–; doi:10.1039/c0nj00193g

data_7053562
_publ_section_title
;
 Mechanisms of reactions conducted on \a-amido-\a-aminonitrones,
 determined based on the structures of their crystalline products and DFT
 calculations
;
_journal_issue                   10
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              2220
_journal_paper_doi               10.1039/c0nj00193g
_journal_volume                  34
_journal_year                    2010
_chemical_formula_moiety         'C20 H18 N4 O'
_chemical_formula_sum            'C20 H18 N4 O'
_chemical_formula_weight         330.38
_chemical_melting_point          437.5(5)
_chemical_name_common
;(Z)-N-(4-methylpyridin-2-yl)-2-(phenylamino)-2-
(phenylimino)ethanamide
;
_chemical_name_systematic
;
(Z)-N-(4-methylpyridin-2-yl)-2-(phenylamino)-2-(phenylimino)ethanamide
;
_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   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.000
_cell_angle_beta                 109.473(1)
_cell_angle_gamma                90.000
_cell_formula_units_Z            4
_cell_length_a                   13.5564(3)
_cell_length_b                   10.1570(3)
_cell_length_c                   13.3227(4)
_cell_measurement_reflns_used    4904
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.485
_cell_measurement_theta_min      0.998
_cell_volume                     1729.50(8)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor, 1997)'
_computing_data_collection       'Collect (Nonius BV, 1997-2000)'
_computing_data_reduction
'HKL DENZO and Scalepack (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'Ortep3 (Farrugia,1997)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR-92 (ALTOMARE et al., 1994)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device       '95mm CCD camera on \k-goniostat'
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       '\f and \o scans to fill Ewald sphere'
_diffrn_radiation_monochromator  'horizontally mounted graphite crystal'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0298
_diffrn_reflns_av_sigmaI/netI    0.0500
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            6633
_diffrn_reflns_theta_full        27.51
_diffrn_reflns_theta_max         27.51
_diffrn_reflns_theta_min         2.56
_exptl_absorpt_coefficient_mu    0.081
_exptl_absorpt_correction_T_max  0.9976
_exptl_absorpt_correction_T_min  0.9566
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'HKL DENZO and Scalepack (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.269
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             696
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.57
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.139
_refine_diff_density_min         -0.148
_refine_diff_density_rms         0.032
_refine_ls_extinction_coef       0.0157(19)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.990
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     233
_refine_ls_number_reflns         3945
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      0.990
_refine_ls_R_factor_all          0.1014
_refine_ls_R_factor_gt           0.0537
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0442P)^2^+0.5708P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1054
_refine_ls_wR_factor_ref         0.1251
_reflns_number_gt                2532
_reflns_number_total             3945
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0nj00193g.txt
_cod_data_source_block           (7b)
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '437-438 K' was changed to '437.5(5)'
- the average value was taken and precision was
estimated.

'_geom_hbond_publ_flag' value 'Y' changed to 'y'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26 (3
times).

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      'P 21/c '
_cod_database_code               7053562