<i>N</i>,<i>N</i>'-Bis(2-methylphenyl)oxamide
Yong-Hong Wen; Li-Li Xu; Xue-Mei Li; Shu-Sheng Zhang; Acta Crystallographica Section E 62 (2006) o3276–o3277; doi:10.1107/S1600536806025992

data_2209978
_publ_section_title
;
 <i>N</i>,<i>N</i>'-Bis(2-methylphenyl)oxamide
;
_journal_coeditor_code           RZ2050
_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o3276
_journal_page_last               o3277
_journal_paper_doi               10.1107/S1600536806025992
_journal_volume                  62
_journal_year                    2006
_chemical_formula_iupac          'C16 H16 N2 O2'
_chemical_formula_moiety         'C16 H16 N2 O2'
_chemical_formula_sum            'C16 H16 N2 O2'
_chemical_formula_weight         268.31
_chemical_name_systematic
;
N,N'-Bis(2-methylphenyl)oxamide
;
_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           SHELXL-97
_cell_angle_alpha                99.582(4)
_cell_angle_beta                 96.152(4)
_cell_angle_gamma                106.527(4)
_cell_formula_units_Z            1
_cell_length_a                   5.3504(13)
_cell_length_b                   6.7371(17)
_cell_length_c                   10.228(3)
_cell_measurement_reflns_used    798
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.9
_cell_measurement_theta_min      3.2
_cell_volume                     343.83(16)
_computing_cell_refinement       'SAINT (Siemens, 1996)'
_computing_data_collection       'SMART (Siemens, 1996)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    SHELXTL
_computing_publication_material
'SHELXTL, PARST (Nardelli, 1995) and PLATON (Spek, 2003)'
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 8.33
_diffrn_measured_fraction_theta_full 0.968
_diffrn_measured_fraction_theta_max 0.968
_diffrn_measurement_device_type  'Siemens SMART 1000 CCD area-detector'
_diffrn_measurement_method       \w
_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  0.0136
_diffrn_reflns_av_sigmaI/netI    0.0227
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       4
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            1934
_diffrn_reflns_theta_full        26.03
_diffrn_reflns_theta_max         26.03
_diffrn_reflns_theta_min         2.05
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.087
_exptl_absorpt_correction_T_max  0.9940
_exptl_absorpt_correction_T_min  0.9778
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.296
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Plate
_exptl_crystal_F_000             142
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.234
_refine_diff_density_min         -0.171
_refine_ls_extinction_coef       0.14(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL97
_refine_ls_goodness_of_fit_ref   1.026
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     92
_refine_ls_number_reflns         1311
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.026
_refine_ls_R_factor_all          0.0609
_refine_ls_R_factor_gt           0.0527
_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^)+(0.0866P)^2^+0.0923P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1454
_refine_ls_wR_factor_ref         0.1555
_reflns_number_gt                1111
_reflns_number_total             1311
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            rz2050.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        343.83(15)
_cod_database_code               2209978
_cod_database_fobs_code          2209978