4a-Hydroxy-9-(3-nitrophenyl)-3,4,4a,5,6,7,9,9a-octahydro-2<i>H</i>-xanthene-1,8-dione
Hua, Guoping; Xu, Jianing; Jiang, Bo; Zhang, Yan; Tu, Shujiang; Acta Crystallographica Section E 62 (2006) o332–o333; doi:10.1107/S1600536805042194

data_2207869
_publ_section_title
4a-Hydroxy-9-(3-nitrophenyl)-3,4,4a,5,6,7,9,9a-octahydro-2<i>H</i>-xanthene-1,8-dione
_journal_issue                   1
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o332
_journal_page_last               o333
_journal_paper_doi               10.1107/S1600536805042194
_journal_volume                  62
_journal_year                    2006
_chemical_formula_moiety         'C19 H19 N O6'
_chemical_formula_sum            'C19 H19 N O6'
_chemical_formula_weight         357.35
_chemical_melting_point          492
_chemical_name_systematic
4a-Hydroxy-9-(3-nitro-phenyl)-3,4,4a,5,6,7,9,9a-octahydro-2H-xanthene-1,8-dione
_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                90.00
_cell_angle_beta                 90.960(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.2983(11)
_cell_length_b                   12.869(2)
_cell_length_c                   21.619(4)
_cell_measurement_reflns_used    1499
_cell_measurement_temperature    294(2)
_cell_measurement_theta_max      24.34
_cell_measurement_theta_min      2.46
_cell_volume                     1752.0(5)
_computing_cell_refinement       'SAINT (Bruker, 1999)'
_computing_data_collection       'SMART (Bruker, 1998)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'SHELXTL (Sheldrick, 1997b)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997a)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997a)'
_diffrn_ambient_temperature      294(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker SMART CCD area-detector'
_diffrn_measurement_method       '\f and \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  0.0821
_diffrn_reflns_av_sigmaI/netI    0.1149
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            9539
_diffrn_reflns_theta_full        26.31
_diffrn_reflns_theta_max         26.31
_diffrn_reflns_theta_min         1.84
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.102
_exptl_absorpt_correction_T_max  0.994
_exptl_absorpt_correction_T_min  0.970
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.355
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             752
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.178
_refine_diff_density_min         -0.191
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.944
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     239
_refine_ls_number_reflns         3530
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.944
_refine_ls_R_factor_all          0.1675
_refine_ls_R_factor_gt           0.0583
_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^)+(0.0535P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1058
_refine_ls_wR_factor_ref         0.1383
_reflns_number_gt                1536
_reflns_number_total             3530
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            rz6157.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:

'_chemical_melting_point' value '492 K' was changed to '492' - the
value should be numeric and without a unit designator.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 

The following automatic conversions were performed:

'_chemical_melting_point' value '492 K' was changed to '492' - the
value should be numeric and without a unit
designator.

'_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_cell_volume        1752.1(5)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2207869
_cod_database_fobs_code          2207869