Redetermination and absolute configuration of atalaphylline
Fun, Hoong-Kun; Yeap, Chin Sing; Chantrapromma, Suchada; Acta Crystallographica Section E 66 (2010) o252–o253; doi:10.1107/S160053680905449X

data_2225115
_publ_section_title
;
 Redetermination and absolute configuration of atalaphylline
;
_journal_coeditor_code           SJ2714
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o252
_journal_page_last               o253
_journal_paper_doi               10.1107/S160053680905449X
_journal_volume                  66
_journal_year                    2010
_chemical_formula_iupac          'C23 H25 N O4'
_chemical_formula_moiety         'C23 H25 N O4'
_chemical_formula_sum            'C23 H25 N O4'
_chemical_formula_weight         379.44
_chemical_name_common
;
atalaphylline
;
_chemical_name_systematic
;
1,3,5-trihydroxy-2,4-bis(3-methylbut-2-enyl)acridin-9(10<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                   5.08380(10)
_cell_length_b                   15.0262(3)
_cell_length_c                   24.6412(4)
_cell_measurement_reflns_used    3145
_cell_measurement_temperature    100
_cell_measurement_theta_max      64.85
_cell_measurement_theta_min      6.14
_cell_volume                     1882.35(6)
_computing_cell_refinement       'SAINT (Bruker, 2009)'
_computing_data_collection       'APEX2 (Bruker, 2009)'
_computing_data_reduction        'SAINT (Bruker, 2009)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material
;
SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009)
;
_computing_structure_refinement  'SHELXTL (Sheldrick, 2008)'
_computing_structure_solution    'SHELXTL (Sheldrick, 2008)'
_diffrn_ambient_temperature      100
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker APEX Duo CCD area-detector'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0174
_diffrn_reflns_av_sigmaI/netI    0.0156
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            11768
_diffrn_reflns_theta_full        64.85
_diffrn_reflns_theta_max         64.85
_diffrn_reflns_theta_min         6.14
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.738
_exptl_absorpt_correction_T_max  0.9697
_exptl_absorpt_correction_T_min  0.7552
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2009)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.339
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             808
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.121
_refine_diff_density_min         -0.103
_refine_ls_abs_structure_details 'Flack (1983), 1280 Friedel pairs'
_refine_ls_abs_structure_Flack   0.05(13)
_refine_ls_extinction_coef       0.0020(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXTL (Sheldrick, 2008)'
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     354
_refine_ls_number_reflns         3145
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0251
_refine_ls_R_factor_gt           0.0248
_refine_ls_shift/su_max_lt       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^)+(0.0452P)^2^+0.1806P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0675
_refine_ls_wR_factor_ref         0.0678
_reflns_number_gt                3099
_reflns_number_total             3145
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            sj2714.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_database_code               2225115
_cod_database_fobs_code          2225115