Selective syntheses of partially etherified derivatives of tetrakis(2-hydroxyphenyl)ethene. An alternative to the calix[4]arene ligand system.
Fujita, Megumi; Qi, Guizhong; Verkerk, Udo H.; Dzwiniel, Trevor L.; McDonald, Robert; Stryker, Jeffrey M.; Organic letters 6 (2004) 2653–2656; doi:10.1021/ol0491639

data_1507067
_publ_section_title
;
 Selective syntheses of partially etherified derivatives of
 tetrakis(2-hydroxyphenyl)ethene. An alternative to the calix[4]arene
 ligand system.
;
_journal_issue                   16
_journal_name_full               'Organic letters'
_journal_page_first              2653
_journal_page_last               2656
_journal_paper_doi               10.1021/ol0491639
_journal_volume                  6
_journal_year                    2004
_chemical_formula_moiety         'C28 H24 O4'
_chemical_formula_sum            'C28 H24 O4'
_chemical_formula_weight         424.47
_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           'manual editing of SHELXL template'
_cell_angle_alpha                90.00
_cell_angle_beta                 99.547(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.9757(13)
_cell_length_b                   15.4466(18)
_cell_length_c                   13.6421(13)
_cell_measurement_reflns_used    1526
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      25.76
_cell_measurement_theta_min      1.00
_cell_volume                     2280.8(4)
_computing_cell_refinement       'Bruker SAINT (Bruker, 1997)'
_computing_data_collection       'Bruker SMART (Bruker, 1997)'
_computing_data_reduction        'Bruker SAINT (Bruker, 1997)'
_computing_molecular_graphics    'Bruker SHELXTL (Bruker, 1997)'
_computing_publication_material  'Bruker SHELXTL (Bruker, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      193(2)
_diffrn_detector_area_resol_mean 8.192
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type
'Bruker P4/RA diffractometer/SMART 1000 CCD area detector'
_diffrn_measurement_method       '\f and\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1625
_diffrn_reflns_av_sigmaI/netI    0.2985
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            12189
_diffrn_reflns_theta_full        25.76
_diffrn_reflns_theta_max         25.76
_diffrn_reflns_theta_min         1.88
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.082
_exptl_absorpt_correction_T_max  0.9674
_exptl_absorpt_correction_T_min  0.6240
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.236
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             896
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.631
_refine_diff_density_min         -0.276
_refine_diff_density_rms         0.055
_refine_ls_extinction_coef       0.0116(13)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.771
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     292
_refine_ls_number_reflns         4356
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.771
_refine_ls_R_factor_all          0.2607
_refine_ls_R_factor_gt           0.0659
_refine_ls_shift/su_max          0.013
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0622P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1331
_refine_ls_wR_factor_ref         0.1837
_reflns_number_gt                1167
_reflns_number_total             4356
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ol0491639si20040621_120843.cif
_cod_data_source_block           compound(2Z)
_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_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               1507067