Diethyl 2,3-bis(benzo[1,3]dioxole-5-carbonyl)but-2-enedioate
Wang, Zhi-Guo; Chen, Ai-Hua; Yin, Guo-Dong; Wu, An-Xin; Acta Crystallographica Section E 61 (2005) o2320–o2321; doi:10.1107/S1600536805020003

data_2206307
_publ_section_title
;
 Diethyl 2,3-bis(benzo[1,3]dioxole-5-carbonyl)but-2-enedioate
;
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2320
_journal_page_last               o2321
_journal_paper_doi               10.1107/S1600536805020003
_journal_volume                  61
_journal_year                    2005
_chemical_formula_iupac          'C24 H20 O10'
_chemical_formula_moiety         'C24 H20 O10'
_chemical_formula_sum            'C24 H20 O10'
_chemical_formula_weight         468.40
_chemical_name_systematic
;
Diethyl 2,3-bis(benzo[1,3]dioxole-5-carbonyl)but-2-enedioate
;
_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
_cell_angle_alpha                90
_cell_angle_beta                 107.082(2)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   11.1653(14)
_cell_length_b                   13.3535(17)
_cell_length_c                   7.7380(10)
_cell_measurement_reflns_used    2001
_cell_measurement_temperature    292(2)
_cell_measurement_theta_max      25.6
_cell_measurement_theta_min      2.4
_cell_volume                     1102.8(2)
_computing_cell_refinement       'SAINT (Bruker, 2001)'
_computing_data_collection       'SMART (Bruker, 2001)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2001)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      292(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  0.024
_diffrn_reflns_av_sigmaI/netI    0.029
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            6336
_diffrn_reflns_theta_full        27.0
_diffrn_reflns_theta_max         27.0
_diffrn_reflns_theta_min         1.91
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.111
_exptl_absorpt_correction_T_max  0.978
_exptl_absorpt_correction_T_min  0.957
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    1.411
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             488
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.24
_refine_diff_density_min         -0.19
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.08
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     155
_refine_ls_number_reflns         2399
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.08
_refine_ls_R_factor_all          0.065
_refine_ls_R_factor_gt           0.054
_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^)+(0.0737P)^2^+0.2005P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.139
_refine_ls_wR_factor_ref         0.147
_reflns_number_gt                1922
_reflns_number_total             2398
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            tk6229.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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 'Monoclinic' changed to 'monoclinic'
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_sg_symbol_H-M      'P 21/c'
_cod_database_code               2206307
_cod_database_fobs_code          2206307