Ethyl 5-cyano-1<i>H</i>-pyrrole-2-carboxylate
Zhang, Yan-Hua; Yin, Zhenming; Li, Xiao-Fang; Cheng, Jin-Pei; Acta Crystallographica Section E 59 (2003) o1881–o1882; doi:10.1107/S1600536803024607

data_2203007
_publ_section_title
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 Ethyl 5-cyano-1<i>H</i>-pyrrole-2-carboxylate
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_journal_issue                   12
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1881
_journal_page_last               o1882
_journal_paper_doi               10.1107/S1600536803024607
_journal_volume                  59
_journal_year                    2003
_chemical_formula_iupac          'C8 H8 N2 O2'
_chemical_formula_moiety         'C8 H8 N2 O2'
_chemical_formula_sum            'C8 H8 N2 O2'
_chemical_formula_weight         164.16
_chemical_melting_point          392
_chemical_name_systematic
;
Ethyl 5-cyano-1H-pyrrole-2-carboxylate
;
_space_group_IT_number           62
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.866(3)
_cell_length_b                   6.710(3)
_cell_length_c                   15.959(7)
_cell_measurement_reflns_used    762
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      24.49
_cell_measurement_theta_min      2.55
_cell_volume                     842.3(6)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART (Bruker, 1997)'
_computing_data_reduction        'SAINT (Bruker, 1997)'
_computing_molecular_graphics    'SHELXTL (Bruker, 1997)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.988
_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  0.0221
_diffrn_reflns_av_sigmaI/netI    0.0228
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       4
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            2209
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         24.49
_diffrn_reflns_theta_min         2.55
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.096
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.295
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             344
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.237
_refine_diff_density_min         -0.255
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.118
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     74
_refine_ls_number_reflns         921
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.118
_refine_ls_R_factor_all          0.0735
_refine_ls_R_factor_gt           0.0526
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.084P)^2^] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.1585
_reflns_number_gt                664
_reflns_number_total             921
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ww6137.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
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 'Orthorhombic' changed to
'orthorhombic' 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 
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_cod_database_code               2203007
_cod_database_fobs_code          2203007