6-Chloro-2<i>H</i>-1,4-benzoxazin-3(4<i>H</i>)-one
Zhuang, Wen-Chang; Xie, Yong-Sheng; Acta Crystallographica Section E 64 (2008) o2369–; doi:10.1107/S1600536808035599

data_2220385
_publ_section_title
;
 6-Chloro-2<i>H</i>-1,4-benzoxazin-3(4<i>H</i>)-one
;
_journal_coeditor_code           WN2285
_journal_issue                   12
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2369
_journal_paper_doi               10.1107/S1600536808035599
_journal_volume                  64
_journal_year                    2008
_chemical_formula_iupac          'C8 H6 Cl N O2'
_chemical_formula_moiety         'C8 H6 Cl N O2'
_chemical_formula_sum            'C8 H6 Cl N O2'
_chemical_formula_weight         183.59
_chemical_name_systematic
;
6-Chloro-2<i>H</i>-1,4-benzoxazin-3(4<i>H</i>)-one
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   4.5359(6)
_cell_length_b                   7.7000(10)
_cell_length_c                   21.281(3)
_cell_measurement_reflns_used    1287
_cell_measurement_temperature    273(2)
_cell_measurement_theta_max      24.35
_cell_measurement_theta_min      3.27
_cell_volume                     743.27(17)
_computing_cell_refinement       'SAINT (Bruker 2002)'
_computing_data_collection       'SMART (Bruker 2002)'
_computing_data_reduction        'SAINT (Bruker 2002)'
_computing_molecular_graphics    'XP in SHELXTL (Sheldrick 2008)'
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      273(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0468
_diffrn_reflns_av_sigmaI/netI    0.0498
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            3857
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         1.91
_exptl_absorpt_coefficient_mu    0.462
_exptl_absorpt_correction_T_max  0.9728
_exptl_absorpt_correction_T_min  0.8776
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2002)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.641
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             376
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.163
_refine_diff_density_min         -0.205
_refine_ls_abs_structure_details 'Flack (1983), 500 Friedel pairs'
_refine_ls_abs_structure_Flack   0.06(11)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.070
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     109
_refine_ls_number_reflns         1314
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.070
_refine_ls_R_factor_all          0.0455
_refine_ls_R_factor_gt           0.0383
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0401P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0854
_refine_ls_wR_factor_ref         0.0883
_reflns_number_gt                1143
_reflns_number_total             1314
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            wn2285.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 
;
_cod_original_cell_volume        743.28(17)
_cod_database_code               2220385
_cod_database_fobs_code          2220385