5,5'-Di-<i>tert</i>-butyl-2,2'-dihydroxy-3,3'-methylenedibenzaldehyde and 6,6'-di-<i>tert</i>-butyl-8,8'-methylenebis(spiro[4<i>H</i>-1,3-benzodioxin-2,1'-cyclohexane])
Masci, Bernardo; Levi Mortera, Stefano; Seralessandri, Luca; Thuéry, Pierre; Acta Crystallographica Section C 60 (2004) o107–o109; doi:10.1107/S0108270103027859

data_2013819
_publ_section_title
;5,5'-Di-<i>tert</i>-butyl-2,2'-dihydroxy-3,3'-methylenedibenzaldehyde and
 6,6'-di-<i>tert</i>-butyl-8,8'-methylenebis(spiro[4<i>H</i>-1,3-benzodioxin-2,1'-cyclohexane])
;
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o107
_journal_page_last               o109
_journal_paper_doi               10.1107/S0108270103027859
_journal_volume                  60
_journal_year                    2004
_chemical_formula_iupac          'C23 H28 O4'
_chemical_formula_moiety         'C23 H28 O4'
_chemical_formula_sum            'C23 H28 O4'
_chemical_formula_weight         368.45
_chemical_name_systematic
;
5,5'-Di-tert-butyl-2,2'-dihydroxy-3,3'-methylenedibenzaldehyde
;
_space_group_IT_number           88
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  '-I 4ad'
_symmetry_space_group_name_H-M   'I 41/a :2'
_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            8
_cell_length_a                   12.7655(5)
_cell_length_b                   12.7655(5)
_cell_length_c                   24.1122(11)
_cell_measurement_reflns_used    15112
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      25.67
_cell_measurement_theta_min      2.82
_cell_volume                     3929.3(3)
_computing_cell_refinement       'DENZO--SMN (Otwinowski & Minor, 1997)'
_computing_data_collection       'KappaCCD Server Software (Nonius, 1998)'
_computing_data_reduction        DENZO--SMN
_computing_molecular_graphics    'SHELXTL (Bruker, 1999)'
_computing_publication_material  'SHELXTL and PLATON (Spek, 2000)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       '\f 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  0.0661
_diffrn_reflns_av_sigmaI/netI    0.0336
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            15112
_diffrn_reflns_theta_full        25.67
_diffrn_reflns_theta_max         25.67
_diffrn_reflns_theta_min         2.82
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.084
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.246
_exptl_crystal_density_meas      ?
_exptl_crystal_description       irregular
_exptl_crystal_F_000             1584
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.162
_refine_diff_density_min         -0.206
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.974
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     126
_refine_ls_number_reflns         1874
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.974
_refine_ls_R_factor_all          0.0648
_refine_ls_R_factor_gt           0.0450
_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^)+(0.0774P)^2^+2.6466P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1140
_refine_ls_wR_factor_ref         0.1297
_reflns_number_gt                1437
_reflns_number_total             1874
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            na1630.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      'I 41/a'
_cod_database_code               2013819
_cod_database_fobs_code          2013819