Five analogs of the active metabolite of leflunomide
Ghosh, Sutapa; Zheng, Yaguo; Uckun, Fatih M.; Acta Crystallographica Section C 55 (1999) 2117–2122; doi:10.1107/S0108270199011142

data_2009245
_publ_section_title
;
 Five analogs of the active metabolite of leflunomide
;
_journal_issue                   12
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              2117
_journal_page_last               2122
_journal_paper_doi               10.1107/S0108270199011142
_journal_volume                  55
_journal_year                    1999
_chemical_formula_moiety         'C11 H9 F N2 O2'
_chemical_formula_sum            'C11 H9 F N2 O2'
_chemical_formula_weight         220.20
_chemical_name_systematic
;
 \a-cyano-\b-hydroxy-N-(2-flurophenyl)but-2-enamide
;
_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'
_cell_angle_alpha                90.00
_cell_angle_beta                 101.023(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.9641(8)
_cell_length_b                   14.1215(12)
_cell_length_c                   8.3270(7)
_cell_measurement_reflns_used    2755
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      25.04
_cell_measurement_theta_min      2.31
_cell_volume                     1034.64(15)
_computing_cell_refinement       'SAINT (Siemens, 1996b)'
_computing_data_collection       'SMART (Siemens, 1996a)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    SHELXTL-Plus
_computing_publication_material  SHELXTL-Plus
_computing_structure_refinement  SHELXTL-Plus
_computing_structure_solution    'SHELXTL-Plus (Sheldrick, 1996b)'
_diffrn_ambient_temperature      298(2)
_diffrn_measurement_device_type  'Siemens SMART  CCD area detector'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0290
_diffrn_reflns_av_sigmaI/netI    0.0392
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            5017
_diffrn_reflns_theta_max         25.04
_diffrn_reflns_theta_min         2.31
_exptl_absorpt_coefficient_mu    0.111
_exptl_absorpt_correction_T_max  0.9835
_exptl_absorpt_correction_T_min  0.9465
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996a)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.414
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             456
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.362
_refine_diff_density_min         -0.266
_refine_ls_extinction_coef       0.011(3)
_refine_ls_extinction_method     'SHELXTL-Plus (Sheldrick, 1996b)'
_refine_ls_goodness_of_fit_ref   1.202
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     148
_refine_ls_number_reflns         1788
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.202
_refine_ls_R_factor_all          0.0792
_refine_ls_R_factor_gt           0.0555
_refine_ls_shift/su_max          0.007
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0645P)^2^+0.1748P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.1468
_reflns_number_gt                1319
_reflns_number_total             1788
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            da1089.cif
_cod_data_source_block           LFM_A7
_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               2009245