Two substituted 2-pyrrolin-5-ones: chains built from a single N—H···O hydrogen bond
Zhen-Feng Zhang; Jian-Ge Wang; Si-Qian Wang; Gui-Rong Qu; Acta Crystallographica Section C 63 (2007) o565–o567; doi:10.1107/S0108270107038632

data_2016190
_publ_section_title
;
 Two substituted 2-pyrrolin-5-ones: chains built from a single
 N---H&#x00B7;&#x00B7;&#x00B7;O hydrogen bond
;
_journal_coeditor_code           GD3127
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o565
_journal_page_last               o567
_journal_paper_doi               10.1107/S0108270107038632
_journal_volume                  63
_journal_year                    2007
_chemical_formula_iupac          'C7 H9 N O3'
_chemical_formula_moiety         'C7 H9 N O3'
_chemical_formula_sum            'C7 H9 N O3'
_chemical_formula_weight         155.15
_chemical_name_systematic
;
methyl 2-methyl-5-oxo-2-pyrroline-3-carboxylate
;
_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                 91.509(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.377(3)
_cell_length_b                   7.562(2)
_cell_length_c                   7.880(2)
_cell_measurement_temperature    291(2)
_cell_volume                     737.3(3)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART (Bruker, 1997)'
_computing_data_reduction        'SAINT (Bruker, 1997)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 1997b)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997a)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997a)'
_diffrn_ambient_temperature      291(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker SMART CCD area-detector'
_diffrn_measurement_method       '\f and \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  0.0447
_diffrn_reflns_av_sigmaI/netI    0.0392
_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       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            5325
_diffrn_reflns_theta_full        25.49
_diffrn_reflns_theta_max         25.49
_diffrn_reflns_theta_min         3.16
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.110
_exptl_absorpt_correction_T_max  0.9751
_exptl_absorpt_correction_T_min  0.9583
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.398
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             328
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.32
_exptl_crystal_size_min          0.23
_refine_diff_density_max         0.235
_refine_diff_density_min         -0.237
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.314
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     102
_refine_ls_number_reflns         1371
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.314
_refine_ls_R_factor_all          0.0585
_refine_ls_R_factor_gt           0.0476
_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^)+(0.0731P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1335
_refine_ls_wR_factor_ref         0.1423
_reflns_number_gt                1095
_reflns_number_total             1371
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            gd3127.cif
_cod_data_source_block           I
_cod_original_cell_volume        737.4(3)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2016190
_cod_database_fobs_code          2016190