1-Acetyl-3-[1-(4-methoxyphenyl)-2-oxopropylidene]-1<i>H</i>-indol-2(3<i>H</i>)-one: a twinned crystal
Usman, Anwar; Razak, Ibrahim Abdul; Fun, Hoong-Kun; Chantrapromma, Suchada; Zhang, Yan; Xu, Jian-Hua; Acta Crystallographica Section C 58 (2002) o239–o241; doi:10.1107/S0108270102003542

data_2012647
_publ_section_title
;1-Acetyl-3-[1-(4-methoxyphenyl)-2-oxopropylidene]-1<i>H</i>-indol-2(3<i>H</i>)-one:
 a twinned crystal
;
_journal_issue                   4
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o239
_journal_page_last               o241
_journal_paper_doi               10.1107/S0108270102003542
_journal_volume                  58
_journal_year                    2002
_chemical_formula_moiety         'C20 H17 N O4'
_chemical_formula_sum            'C20 H17 N O4'
_chemical_formula_weight         335.35
_chemical_name_systematic
;
1-Acetyl-3-[1-(4-methoxyphenyl)-2-oxopropylidene]indol-2(3H)-one
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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
_cell_angle_beta                 95.1280(10)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   22.1109(4)
_cell_length_b                   6.93080(10)
_cell_length_c                   22.1109(4)
_cell_measurement_reflns_used    7006
_cell_measurement_temperature    213(2)
_cell_measurement_theta_max      28.33
_cell_measurement_theta_min      2.73
_cell_volume                     3374.85(10)
_computing_cell_refinement       'SAINT (Siemens, 1996)'
_computing_data_collection       'SMART (Siemens, 1996)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    SHELXTL
_computing_publication_material
'SHELXTL, PARST (Nardelli, 1995) and PLATON (Spek, 1990)'
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 8.33
_diffrn_measured_fraction_theta_full 0.967
_diffrn_measured_fraction_theta_max 0.967
_diffrn_measurement_device_type  'Siemens SMART CCD area-detector'
_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  0.091
_diffrn_reflns_av_sigmaI/netI    0.151
_diffrn_reflns_limit_h_max       29
_diffrn_reflns_limit_h_min       -28
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            20195
_diffrn_reflns_theta_full        28.25
_diffrn_reflns_theta_max         28.25
_diffrn_reflns_theta_min         2.73
_diffrn_standards_decay_%        negligible
_exptl_absorpt_coefficient_mu    0.092
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.320
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1408
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.32
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.29
_refine_diff_density_min         -0.25
_refine_ls_extinction_coef       0.0094(6)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 1997a)'
_refine_ls_goodness_of_fit_ref   0.822
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     459
_refine_ls_number_reflns         8083
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.822
_refine_ls_R_factor_all          0.131
_refine_ls_R_factor_gt           0.057
_refine_ls_shift/su_max          <0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0374P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.122
_refine_ls_wR_factor_ref         0.145
_reflns_number_gt                3756
_reflns_number_total             8083
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            na1555.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 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2012647
_cod_database_fobs_code          2012647