2-Benzyl-4',6'-bis(trifluoromethyl)-6'-hydroxy-2',3',7',7a'-tetrahydro-6'H- spiro-(furan-3,7'-(furo(3,2-c)pyran))
Metwally, R. N.; Salem, E. E. -D. M.; El-Sagheer, A. H.; Mellor, J. M.; Coles, Simon J.; Crystal Structure Report Archive  (1999) 77–; doi:

data_1519212
_publ_section_title
;
 2-Benzyl-4',6'-bis(trifluoromethyl)-6'-hydroxy-2',3',7',7a'-tetrahydro-6'H-
 spiro-(furan-3,7'-(furo(3,2-c)pyran))
;
_journal_name_full               'Crystal Structure Report Archive'
_journal_page_first              77
_journal_year                    1999
_chemical_formula_sum            'C19 H18 F6 O4'
_chemical_formula_weight         424.33
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 92.64(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   21.241(4)
_cell_length_b                   16.179(3)
_cell_length_c                   10.732(2)
_cell_measurement_reflns_used    14329
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.54
_cell_measurement_theta_min      2.44
_cell_volume                     3684.2(12)
_computing_cell_refinement
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, 1998)'
_computing_data_collection       'COLLECT (Hooft, 1998)'
_computing_data_reduction
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, 1998)'
_computing_molecular_graphics    'CAMERON (Watkin, Pearce 1995)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device_type  'Nonius KappaCCD Area Detector'
_diffrn_measurement_method       'Phi and Omega scans to fill Ewald Sphere'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0656
_diffrn_reflns_av_sigmaI/netI    0.0871
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            14329
_diffrn_reflns_theta_full        27.53
_diffrn_reflns_theta_max         27.53
_diffrn_reflns_theta_min         2.44
_exptl_absorpt_coefficient_mu    0.145
_exptl_absorpt_correction_T_max  1.0
_exptl_absorpt_correction_T_min  0.935
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SORTAV (Blessing, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.530
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1744
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.025
_refine_diff_density_max         0.275
_refine_diff_density_min         -0.334
_refine_diff_density_rms         0.052
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.860
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     262
_refine_ls_number_reflns         4175
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.860
_refine_ls_R_factor_all          0.1220
_refine_ls_R_factor_gt           0.0499
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1236
_refine_ls_wR_factor_ref         0.1579
_reflns_number_gt                2262
_reflns_number_total             4175
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            eCrystal-77.cif
_cod_data_source_block           99sot029
_cod_depositor_comments
;
Citation :
Metwally, R. N. and Salem, E. E. -D. M. and El-Sagheer, A. H. and 
Mellor, J. M. and Coles, Simon J. (1999) 
University of Southampton, Crystal Structure Report Archive. 
(doi:10.5258/ecrystals/77)

More at:
http://ecrystals.chem.soton.ac.uk/77/

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 3105 2015-03-04 15:46:00Z robertas 
;
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               1519212