Diethyl indolizine-1,3-dicarboxylate
Gu, Wei-Jin; Zhuang, Jin; Jiang, Yu-Liang; Wang, Bing-Xiang; Acta Crystallographica Section E 67 (2011) o123–; doi:10.1107/S1600536810050919

data_2228757
_publ_section_title
;
 Diethyl indolizine-1,3-dicarboxylate
;
_journal_coeditor_code           IM2246
_journal_issue                   1
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o123
_journal_paper_doi               10.1107/S1600536810050919
_journal_volume                  67
_journal_year                    2011
_chemical_formula_iupac          'C14 H15 N O4'
_chemical_formula_moiety         'C14 H15 N O4'
_chemical_formula_sum            'C14 H15 N O4'
_chemical_formula_weight         261.27
_chemical_name_systematic
;
Diethyl indolizine-1,3-dicarboxylate
;
_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           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 101.770(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.941(2)
_cell_length_b                   19.700(4)
_cell_length_c                   8.622(2)
_cell_measurement_reflns_used    1756
_cell_measurement_temperature    291(2)
_cell_measurement_theta_max      22.72
_cell_measurement_theta_min      2.62
_cell_volume                     1320.4(5)
_computing_cell_refinement       'SAINT (Bruker, 2000)'
_computing_data_collection       'SMART (Bruker, 2000)'
_computing_data_reduction        'SAINT (Bruker, 2000)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      291(2)
_diffrn_measured_fraction_theta_full 0.976
_diffrn_measured_fraction_theta_max 0.976
_diffrn_measurement_device_type  'Bruker SMART APEX CCD'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0393
_diffrn_reflns_av_sigmaI/netI    0.0401
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            7930
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         2.62
_exptl_absorpt_coefficient_mu    0.097
_exptl_absorpt_correction_T_max  0.9771
_exptl_absorpt_correction_T_min  0.9715
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2000)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.314
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             552
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.172
_refine_diff_density_min         -0.237
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.049
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     174
_refine_ls_number_reflns         2400
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.049
_refine_ls_R_factor_all          0.0843
_refine_ls_R_factor_gt           0.0500
_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^)+(0.04P)^2^+0.33P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1055
_refine_ls_wR_factor_ref         0.1156
_reflns_number_gt                1567
_reflns_number_total             2400
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            im2246.cif
_cod_data_source_block           I
_cod_original_cell_volume        1320.5(5)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2228757
_cod_database_fobs_code          2228757