2,4,5-Triphenylspiro[pyrazolidine-3,3'-(4'-flavanone)]
Krishna, R.; Shanmuga Sundara Raj, S.; Velmurugan, D.; Fun, Hoong-Kun; Manikandan, S.; Raghunathan, R.; Acta Crystallographica Section C 55 (1999) IUC9900120–; doi:10.1107/S0108270199098662

data_2009059
_publ_section_title
;
 2,4,5-Triphenylspiro[pyrazolidine-3,3'-(4'-flavanone)]
;
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              IUC9900120
_journal_paper_doi               10.1107/S0108270199098662
_journal_volume                  55
_journal_year                    1999
_chemical_formula_sum            'C35 H26 N2 O2'
_chemical_formula_weight         506.58
_chemical_name_systematic
;
 Spiro Pyrazolidine [5.3] 4'-Flavanone.
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   11.5244(2)
_cell_length_b                   19.1647(3)
_cell_length_c                   24.83550(10)
_cell_measurement_reflns_used    8192
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.34
_cell_measurement_theta_min      1.64
_cell_volume                     5485.21(13)
_computing_cell_refinement       'SAINT (Siemens, 1996)'
_computing_data_collection       'SMART (Siemens, 1996)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    SHELXTL
_computing_publication_material  'SHELXTL and PARST (Nardelli, 1995)'
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 8.33
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.052
_diffrn_reflns_av_sigmaI/netI    0.036
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            27670
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.64
_exptl_absorpt_coefficient_mu    0.076
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.23
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'rectangular block'
_exptl_crystal_F_000             2128
_exptl_crystal_size_max          0.48
_exptl_crystal_size_mid          0.32
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.143
_refine_diff_density_min         -0.131
_refine_ls_extinction_coef       0.0015(2)
_refine_ls_extinction_method     SHELXTL
_refine_ls_goodness_of_fit_ref   1.131
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     353
_refine_ls_number_reflns         4838
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.131
_refine_ls_R_factor_all          0.085
_refine_ls_R_factor_gt           0.055
_refine_ls_shift/su_max          <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^)+(0.0396P)^2^+1.7056P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.128
_reflns_number_gt                3409
_reflns_number_total             4838
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            qa0170.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               2009059