A series of three bis[2-(methyl/trifluoromethyl)-4<i>H</i>-3,1-benzoxazin-4-one] compounds
Kovalevsky, A. Yu.; Ponomarev, I. I.; Acta Crystallographica Section C 56 (2000) 260–262; doi:10.1107/S0108270199014213

data_2010598
_publ_section_title
;
 A series of three
 bis[2-(methyl/trifluoromethyl)-4<i>H</i>-3,1-benzoxazin-4-one]
 compounds
;
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              260
_journal_page_last               262
_journal_paper_doi               10.1107/S0108270199014213
_journal_volume                  56
_journal_year                    2000
_chemical_formula_sum            'C19 H8 F6 N2 O4'
_chemical_formula_weight         442.28
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 126.35(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   25.643(17)
_cell_length_b                   5.206(2)
_cell_length_c                   16.211(10)
_cell_measurement_reflns_used    24
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      12
_cell_measurement_theta_min      10
_cell_volume                     1743.0(19)
_computing_cell_refinement       P3
_computing_data_collection       'P3 (Siemens, 1989)'
_computing_data_reduction        'XDISK (Siemens, 1989)'
_computing_molecular_graphics    SHELXTL/PC
_computing_publication_material  SHELXTL/PC
_computing_structure_refinement  SHELXTL/PC
_computing_structure_solution    'SHELXTL/PC (Sheldrick, 1994)'
_diffrn_ambient_temperature      293(2)
_diffrn_measurement_device       'Siemens P3/PC four-circle'
_diffrn_measurement_method       \q/2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     .71073
_diffrn_reflns_av_R_equivalents  .116
_diffrn_reflns_av_sigmaI/netI    .0519
_diffrn_reflns_limit_h_max       36
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            2596
_diffrn_reflns_theta_max         30
_diffrn_reflns_theta_min         1.97
_diffrn_standards_decay_%        10
_diffrn_standards_interval_count 98
_diffrn_standards_number         2
_exptl_absorpt_coefficient_mu    .161
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.685
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       parallelepiped
_exptl_crystal_F_000             888
_exptl_crystal_size_max          .40
_exptl_crystal_size_mid          .30
_exptl_crystal_size_min          .30
_refine_diff_density_max         .400
_refine_diff_density_min         -.393
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
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_refine_ls_number_reflns         2492
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_refine_ls_R_factor_all          .167
_refine_ls_R_factor_gt           .081
_refine_ls_shift/esd_mean        .000
_refine_ls_shift/su_max          <0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.1162P)^2^+2.6524P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         .471
_refine_ls_wR_factor_ref         .209
_reflns_number_gt                1468
_reflns_number_total             2544
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            bm1366.cif
_cod_data_source_block           II
_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:

'_refine_ls_weighting_scheme' value 'calc w =
1/[\s^2^(Fo^2^)+(0.1162P)^2^+2.6524P] where P = (Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to 'w =
1/[\s^2^(Fo^2^)+(0.1162P)^2^+2.6524P] where P = (Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_cell_volume        1743.0(17)
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               2010598