Carbonyl‒carbonyl interactions and amide π-stacking as the directing motifs of the supramolecular assembly of ethyl <i>N</i>-(2-acetylphenyl)oxalamate in a synperiplanar conformation
Cabrera-Pérez, Laura C.; García-Báez, Efrén V.; Franco-Hernández, Marina O.; Martínez-Martínez, Francisco J.; Padilla-Martínez, Itzia I.; Acta Crystallographica Section C 71 (2015) 381–385; doi:10.1107/S2053229615006725

data_2019948
_publ_section_title
;
 Carbonyl--carbonyl interactions and amide \p-stacking as the directing
 motifs of the supramolecular assembly of ethyl
 <i>N</i>-(2-acetylphenyl)oxalamate in a synperiplanar conformation
;
_journal_coeditor_code           UK3109
_journal_issue                   5
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              381
_journal_page_last               385
_journal_paper_doi               10.1107/S2053229615006725
_journal_volume                  71
_journal_year                    2015
_chemical_formula_iupac          'C12 H13 N O4'
_chemical_formula_moiety         'C12 H13 N O4'
_chemical_formula_sum            'C12 H13 N O4'
_chemical_formula_weight         235.23
_chemical_name_systematic
;
Ethyl <i>N</i>-(2-acetylphenyl)oxalamate
;
_space_group_crystal_system      orthorhombic
_space_group_IT_number           62
_space_group_name_Hall           '-P 2ac 2n'
_space_group_name_H-M_alt        'P n m a'
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL97
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   16.667(3)
_cell_length_b                   6.4800(10)
_cell_length_c                   10.241(2)
_cell_measurement_reflns_used    600
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      25
_cell_measurement_theta_min      20
_cell_volume                     1106.1(3)
_computing_cell_refinement
;
SAINT (Bruker, 2004)
;
_computing_data_collection
;
APEX2 (Bruker, 2004)
;
_computing_data_reduction
;
SAINT (Bruker, 2004)
;
_computing_molecular_graphics
;
SHELXTL (Sheldrick, 2008)
;
_computing_publication_material
;
SHELXL97 (Sheldrick, 2008) and WinGX (Farrugia, 2012)
;
_computing_structure_refinement
;
SHELXL97 (Sheldrick, 2008)
;
_computing_structure_solution
;
SHELXS97 (Sheldrick, 2008)
;
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device       'Bruker APEXII CCD area-detector'
_diffrn_measurement_method       '\f and \w'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0366
_diffrn_reflns_av_sigmaI/netI    0.0234
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            10441
_diffrn_reflns_theta_full        25.24
_diffrn_reflns_theta_max         25.24
_diffrn_reflns_theta_min         2.33
_diffrn_standards_decay_%        5
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.107
_exptl_absorpt_correction_T_max  0.8620
_exptl_absorpt_correction_T_min  0.8614
_exptl_absorpt_correction_type   sphere
_exptl_absorpt_process_details
;
(Dwiggins, 1975)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.413
_exptl_crystal_description       block
_exptl_crystal_F_000             496
_exptl_crystal_size_max          0.440
_exptl_crystal_size_mid          0.180
_exptl_crystal_size_min          0.140
_exptl_crystal_size_rad          0.1500
_refine_diff_density_max         0.191
_refine_diff_density_min         -0.197
_refine_ls_extinction_coef       0.0051(11)
_refine_ls_extinction_expression
'Fc* = kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^'
_refine_ls_extinction_method
;
SHELXL97 (Sheldrick, 2008)
;
_refine_ls_goodness_of_fit_ref   1.046
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     108
_refine_ls_number_reflns         1099
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.046
_refine_ls_R_factor_all          0.0368
_refine_ls_R_factor_gt           0.0323
_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^)+(0.0426P)^2^+0.3540P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0802
_refine_ls_wR_factor_ref         0.0833
_reflns_number_gt                984
_reflns_number_total             1099
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            uk3109sup1.cif
_cod_data_source_block           I
_cod_database_code               2019948
_cod_database_fobs_code 2019948