Hydrogen-bonding patterns in six derivatives of 2,4-dimethylpyrrole
Senge, Mathias O.; Smith, Kevin M.; Acta Crystallographica Section C 61 (2005) o537–o541; doi:10.1107/S0108270105023991

data_2014991
_publ_section_title
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 Hydrogen-bonding patterns in six derivatives of 2,4-dimethylpyrrole
;
_journal_coeditor_code           FG1869
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o537
_journal_page_last               o541
_journal_paper_doi               10.1107/S0108270105023991
_journal_volume                  61
_journal_year                    2005
_chemical_formula_iupac          'C10 H13 N O4'
_chemical_formula_moiety         'C10 H13 N O4'
_chemical_formula_sum            'C10 H13 N O4'
_chemical_formula_weight         211.21
_chemical_name_systematic
;
dimethyl 3,5-dimethylpyrrole-2,4-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                 95.31(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.150(4)
_cell_length_b                   16.040(6)
_cell_length_c                   7.908(4)
_cell_measurement_reflns_used    41
_cell_measurement_temperature    130(2)
_cell_measurement_theta_max      25
_cell_measurement_theta_min      20
_cell_volume                     1029.3(8)
_computing_cell_refinement       P3
_computing_data_collection       'P3 (Siemens, 1995)'
_computing_data_reduction        'XDISK (Siemens, 1995)'
_computing_molecular_graphics    'XP (Siemens, 1995)'
_computing_publication_material
;
SHELXL97
;
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      130(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Siemens R3m/V'
_diffrn_measurement_method       '\w scans'
_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  0.0844
_diffrn_reflns_av_sigmaI/netI    0.0162
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       0
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            2521
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         2.51
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 198
_diffrn_standards_number         2
_exptl_absorpt_coefficient_mu    0.106
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.363
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             448
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.38
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.434
_refine_diff_density_min         -0.292
_refine_ls_extinction_coef       0.046(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL97
_refine_ls_goodness_of_fit_ref   1.075
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     145
_refine_ls_number_reflns         2354
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.075
_refine_ls_R_factor_all          0.0485
_refine_ls_R_factor_gt           0.0466
_refine_ls_shift/su_max          0.006
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0783P)^2^+0.3875P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1324
_refine_ls_wR_factor_ref         0.1341
_reflns_number_gt                2214
_reflns_number_total             2354
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            fg1869.cif
_cod_data_source_block           4
_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               2014991
_cod_database_fobs_code          2014991