7,16-Dioxatetracyclo[16.2^4,5^.2^21,22^.2^23,24^.0^9,14^]tetracosa-1,3,5,9,11,13,17,19,21,23-decaene
T. Ravishankar; K. Chinnakali; P. Rajakumar; V. Murali; Anwar Usman; Hoong-Kun Fun; Acta Crystallographica Section E 59 (2003) o293–o295; doi:10.1107/S1600536803002745

data_2202205
_publ_section_title
7,16-Dioxatetracyclo[16.2^4,5^.2^21,22^.2^23,24^.0^9,14^]tetracosa-1,3,5,9,11,13,17,19,21,23-decaene
_journal_issue                   3
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o293
_journal_page_last               o295
_journal_paper_doi               10.1107/S1600536803002745
_journal_volume                  59
_journal_year                    2003
_chemical_formula_iupac          'C22 H18 O2'
_chemical_formula_moiety         'C22 H18 O2'
_chemical_formula_sum            'C22 H18 O2'
_chemical_formula_weight         314.36
_chemical_name_systematic
;
7,16-dioxatetracyclo(16.2^4,5^.2^21,22^.2^23,24^.0^9,14^)-tetracosa-
1,3,5,9,11,13,17,19,21,23-decaene
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 95.4630(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.3086(7)
_cell_length_b                   5.8168(3)
_cell_length_c                   20.8145(11)
_cell_measurement_reflns_used    3501
_cell_measurement_temperature    183(2)
_cell_measurement_theta_max      28.35
_cell_measurement_theta_min      3.49
_cell_volume                     1604.00(15)
_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, 2003)
;
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Sheldrick, 1997)'
_diffrn_ambient_temperature      183(2)
_diffrn_detector_area_resol_mean 8.33
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type
;
Siemens SMART CCD area-detector
;
_diffrn_measurement_method       \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  0.1194
_diffrn_reflns_av_sigmaI/netI    0.1547
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            8283
_diffrn_reflns_theta_full        26.50
_diffrn_reflns_theta_max         26.50
_diffrn_reflns_theta_min         3.49
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.082
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.302
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       slab
_exptl_crystal_F_000             664
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.332
_refine_diff_density_min         -0.325
_refine_ls_extinction_coef       0.061(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXTL
_refine_ls_goodness_of_fit_ref   1.050
_refine_ls_hydrogen_treatment    refxyz
_refine_ls_matrix_type           full
_refine_ls_number_parameters     272
_refine_ls_number_reflns         3288
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.050
_refine_ls_R_factor_all          0.1329
_refine_ls_R_factor_gt           0.0772
_refine_ls_shift/su_max          <0.001
_refine_ls_shift/su_mean         <0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.071P)^2^] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1772
_refine_ls_wR_factor_ref         0.1964
_reflns_number_gt                1910
_reflns_number_total             3288
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            wn6138.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 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2202205
_cod_database_fobs_code          2202205